open-vault/CHANGELOG.md

0.8.0 (unreleased)

SECURITY:

• We've added a note to the docs about the way the GitHub auth backend works as it may not be readily apparent that GitHub personal access tokens, which are used by the backend, can be used for unauthorized access if they are stolen from third party services and access to Vault is public.

DEPRECATIONS/CHANGES:

• Database Plugin Backends: Passwords generated for these backends now enforce stricter password requirements, as opposed to the previous behavior of returning a randomized UUID. Passwords are of length 20, and have a A1a- characters prepended to ensure stricter requirements. No regressions are expected from this change. (For database backends that were previously substituting underscores for hyphens in passwords, this will remain the case.)
• Lease Endpoints: The endpoints sys/renew, sys/revoke, sys/revoke-prefix, sys/revoke-force have been deprecated and relocated under sys/leases. Additionally, the deprecated path sys/revoke-force now requires the sudo capability.
• Response Wrapping Lookup Unauthenticated: The sys/wrapping/lookup endpoint is now unauthenticated. This allows introspection of the wrapping info by clients that only have the wrapping token without then invalidating the token. Validation functions/checks are still performed on the token.

FEATURES:

• Cassandra Storage: Cassandra can now be used for Vault storage
• CockroachDB Storage: CockroachDB can now be used for Vault storage
• CouchDB Storage: CouchDB can now be used for Vault storage
• SAP HANA Database Plugin: The databases backend can now manage users for SAP HANA databases
• Plugin Backends: Vault now supports running secret and auth backends as plugins. Plugins can be mounted like normal backends and can be developed independently from Vault.
• PROXY Protocol Support Vault listeners can now be configured to honor PROXY protocol v1 information to allow passing real client IPs into Vault. A list of authorized addresses (IPs or subnets) can be defined and accept/reject behavior controlled.
• Lease Lookup and Browsing in the Vault Enterprise UI: Vault Enterprise UI now supports lookup and listing of leases and the associated actions from the sys/leases endpoints in the API. These are located in the new top level navigation item "Leases".
• Filtered Mounts for Performance Mode Replication: Whitelists or blacklists of mounts can be defined per-secondary to control which mounts are actually replicated to that secondary. This can allow targeted replication of specific sets of data to specific geolocations/datacenters.
• Disaster Recovery Mode Replication (Enterprise Only): There is a new replication mode, Disaster Recovery (DR), that performs full real-time replication (including tokens and leases) to DR secondaries. DR secondaries cannot handle client requests, but can be promoted to primary as needed for failover.
• Manage New Replication Features in the Vault Enterprise UI: Support for Replication features in Vault Enterprise UI has expanded to include new DR Replication mode and management of Filtered Mounts in Performance Replication mode.
• Vault Identity (Enterprise Only): Vault's new Identity system allows correlation of users across tokens. At present this is only used for MFA, but will be the foundation of many other features going forward.
• Duo Push, Okta Push, and TOTP MFA For All Authenticated Paths (Enterprise Only): A brand new MFA system built on top of Identity allows MFA (currently Duo Push, Okta Push, and TOTP) for any authenticated path within Vault. MFA methods can be configured centrally, and TOTP keys live within the user's Identity information to allow using the same key across tokens. Specific MFA method(s) required for any given path within Vault can be specified in normal ACL path statements.

IMPROVEMENTS:

• api: Add client method for a secret renewer background process [GH-2886]
• api: Add RenewTokenAsSelf [GH-2886]
• api: Client timeout can now be adjusted with the VAULT_CLIENT_TIMEOUT env var or with a new API function [GH-2956]
• api/cli: Client will now attempt to look up SRV records for the given Vault hostname [GH-3035]
• audit/socket: Enhance reconnection logic and don't require the connection to be established at unseal time [GH-2934]
• audit/file: Opportunistically try re-opening the file on error [GH-2999]
• auth/approle: Add role name to token metadata [GH-2985]
• auth/okta: Allow specifying ttl/max_ttl inside the mount [GH-2915]
• cli: Client timeout can now be adjusted with the VAULT_CLIENT_TIMEOUT env var [GH-2956]
• command/auth: Add -token-only flag to vault auth that returns only the token on stdout and does not store it via the token helper [GH-2855]
• core: CORS allowed origins can now be configured [GH-2021]
• core: Add metrics counters for audit log failures [GH-2863]
• cors: Allow setting allowed headers via the API instead of always using wildcard [GH-3023]
• secret/ssh: Allow specifying the key ID format using template values for CA type [GH-2888]
• server: Add tls_client_ca_file option for specifying a CA file to use for client certificate verification when tls_require_and_verify_client_cert is enabled [GH-3034]
• storage/cockroachdb: Add CockroachDB storage backend [GH-2713]
• storage/couchdb: Add CouchhDB storage backend [GH-2880]
• storage/mssql: Add max_parallel [GH-3026]
• storage/postgresql: Add max_parallel [GH-3026]
• storage/postgresql: Improve listing speed [GH-2945]
• storage/s3: More efficient paging when an object has a lot of subobjects [GH-2780]
• sys/wrapping: Make sys/wrapping/lookup unauthenticated [GH-3084]
• sys/wrapping: Wrapped tokens now store the original request path of the data [GH-3100]
• telemetry: Add support for DogStatsD [GH-2490]

BUG FIXES:

• api/health: Don't treat standby 429 codes as an error [GH-2850]
• api/leases: Fix lease lookup returning lease properties at the top level
• audit: Fix panic when audit logging a read operation on an asymmetric transit key [GH-2958]
• auth/approle: Fix panic when secret and cidr list not provided in role [GH-3075]
• auth/aws: Look up proper account ID on token renew [GH-3012]
• auth/aws: Store IAM header in all cases when it changes [GH-3004]
• auth/ldap: Verify given certificate is PEM encoded instead of failing silently [GH-3016]
• auth/token: Don't allow using the same token ID twice when manually specifying [GH-2916]
• cli: Fix issue with parsing keys that start with special characters [GH-2998]
• core: Relocated sys/leases/renew returns same payload as original sys/leases endpoint [GH-2891]
• secret/ssh: Fix panic when signing with incorrect key type [GH-3072]
• secret/totp: Ensure codes can only be used once. This makes some automated workflows harder but complies with the RFC. [GH-2908]
• secret/transit: Fix locking when creating a key with unsupported options [GH-2974]

0.7.3 (June 7th, 2017)

SECURITY:

• Cert auth backend now checks validity of individual certificates: In previous versions of Vault, validity (e.g. expiration) of individual leaf certificates added for authentication was not checked. This was done to make it easier for administrators to control lifecycles of individual certificates added to the backend, e.g. the authentication material being checked was access to that specific certificate's private key rather than all private keys signed by a CA. However, this behavior is often unexpected and as a result can lead to insecure deployments, so we are now validating these certificates as well.
• App-ID path salting was skipped in 0.7.1/0.7.2: A regression in 0.7.1/0.7.2 caused the HMACing of any App-ID information stored in paths (including actual app-IDs and user-IDs) to be unsalted and written as-is from the API. In 0.7.3 any such paths will be automatically changed to salted versions on access (e.g. login or read); however, if you created new app-IDs or user-IDs in 0.7.1/0.7.2, you may want to consider whether any users with access to Vault's underlying data store may have intercepted these values, and revoke/roll them.

DEPRECATIONS/CHANGES:

• Step-Down is Forwarded: When a step-down is issued against a non-active node in an HA cluster, it will now forward the request to the active node.

FEATURES:

• ed25519 Signing/Verification in Transit with Key Derivation: The transit backend now supports generating ed25519 keys for signing and verification functionality. These keys support derivation, allowing you to modify the actual encryption key used by supplying a context value.
• Key Version Specification for Encryption in Transit: You can now specify the version of a key you use to wish to generate a signature, ciphertext, or HMAC. This can be controlled by the min_encryption_version key configuration property.
• Replication Primary Discovery (Enterprise): Replication primaries will now advertise the addresses of their local HA cluster members to replication secondaries. This helps recovery if the primary active node goes down and neither service discovery nor load balancers are in use to steer clients.

IMPROVEMENTS:

• api/health: Add Sys().Health() [GH-2805]
• audit: Add auth information to requests that error out [GH-2754]
• command/auth: Add -no-store option that prevents the auth command from storing the returned token into the configured token helper [GH-2809]
• core/forwarding: Request forwarding now heartbeats to prevent unused connections from being terminated by firewalls or proxies
• plugins/databases: Add MongoDB as an internal database plugin [GH-2698]
• storage/dynamodb: Add a method for checking the existence of children, speeding up deletion operations in the DynamoDB storage backend [GH-2722]
• storage/mysql: Add max_parallel parameter to MySQL backend [GH-2760]
• secret/databases: Support listing connections [GH-2823]
• secret/databases: Support custom renewal statements in Postgres database plugin [GH-2788]
• secret/databases: Use the role name as part of generated credentials [GH-2812]
• ui (Enterprise): Transit key and secret browsing UI handle large lists better
• ui (Enterprise): root tokens are no longer persisted
• ui (Enterprise): support for mounting Database and TOTP secret backends

BUG FIXES:

• auth/app-id: Fix regression causing loading of salts to be skipped
• auth/aws: Improve EC2 describe instances performance [GH-2766]
• auth/aws: Fix lookup of some instance profile ARNs [GH-2802]
• auth/aws: Resolve ARNs to internal AWS IDs which makes lookup at various points (e.g. renewal time) more robust [GH-2814]
• auth/aws: Properly honor configured period when using IAM authentication [GH-2825]
• auth/aws: Check that a bound IAM principal is not empty (in the current state of the role) before requiring it match the previously authenticated client [GH-2781]
• auth/cert: Fix panic on renewal [GH-2749]
• auth/cert: Certificate verification for non-CA certs [GH-2761]
• core/acl: Prevent race condition when compiling ACLs in some scenarios [GH-2826]
• secret/database: Increase wrapping token TTL; in a loaded scenario it could be too short
• secret/generic: Allow integers to be set as the value of ttl field as the documentation claims is supported [GH-2699]
• secret/ssh: Added host key callback to ssh client config [GH-2752]
• storage/s3: Avoid a panic when some bad data is returned [GH-2785]
• storage/dynamodb: Fix list functions working improperly on Windows [GH-2789]
• storage/file: Don't leak file descriptors in some error cases
• storage/swift: Fix pre-v3 project/tenant name reading [GH-2803]

0.7.2 (May 8th, 2017)

BUG FIXES:

• audit: Fix auditing entries containing certain kinds of time values [GH-2689]

0.7.1 (May 5th, 2017)

DEPRECATIONS/CHANGES:

• LDAP Auth Backend: Group membership queries will now run as the binddn user when binddn/bindpass are configured, rather than as the authenticating user as was the case previously.

FEATURES:

• AWS IAM Authentication: IAM principals can get Vault tokens automatically, opening AWS-based authentication to users, ECS containers, Lambda instances, and more. Signed client identity information retrieved using the AWS API sts:GetCallerIdentity is validated against the AWS STS service before issuing a Vault token. This backend is unified with the aws-ec2 authentication backend, and allows additional EC2-related restrictions to be applied during the IAM authentication; the previous EC2 behavior is also still available. [GH-2441]
• MSSQL Physical Backend: You can now use Microsoft SQL Server as your Vault physical data store [GH-2546]
• Lease Listing and Lookup: You can now introspect a lease to get its creation and expiration properties via sys/leases/lookup; with sudo capability you can also list leases for lookup, renewal, or revocation via that endpoint. Various lease functions (renew, revoke, revoke-prefix, revoke-force) have also been relocated to sys/leases/, but they also work at the old paths for compatibility. Reading (but not listing) leases via sys/leases/lookup is now a part of the current default policy. [GH-2650]
• TOTP Secret Backend: You can now store multi-factor authentication keys in Vault and use the API to retrieve time-based one-time use passwords on demand. The backend can also be used to generate a new key and validate passwords generated by that key. [GH-2492]
• Database Secret Backend & Secure Plugins (Beta): This new secret backend combines the functionality of the MySQL, PostgreSQL, MSSQL, and Cassandra backends. It also provides a plugin interface for extendability through custom databases. [GH-2200]

IMPROVEMENTS:

• auth/cert: Support for constraints on subject Common Name and DNS/email Subject Alternate Names in certificates [GH-2595]
• auth/ldap: Use the binding credentials to search group membership rather than the user credentials [GH-2534]
• cli/revoke: Add -self option to allow revoking the currently active token [GH-2596]
• core: Randomize x coordinate in Shamir shares [GH-2621]
• replication: Fix a bug when enabling approle on a primary before secondaries were connected
• replication: Add heartbeating to ensure firewalls don't kill connections to primaries
• secret/pki: Add no_store option that allows certificates to be issued without being stored. This removes the ability to look up and/or add to a CRL but helps with scaling to very large numbers of certificates. [GH-2565]
• secret/pki: If used with a role parameter, the sign-verbatim/<role> endpoint honors the values of generate_lease, no_store, ttl and max_ttl from the given role [GH-2593]
• secret/pki: Add role parameter allow_glob_domains that enables defining names in allowed_domains containing * glob patterns [GH-2517]
• secret/pki: Update certificate storage to not use characters that are not supported on some filesystems [GH-2575]
• storage/etcd3: Add discovery_srv option to query for SRV records to find servers [GH-2521]
• storage/s3: Support max_parallel option to limit concurrent outstanding requests [GH-2466]
• storage/s3: Use pooled transport for http client [GH-2481]
• storage/swift: Allow domain values for V3 authentication [GH-2554]
• tidy: Improvements to auth/token/tidy and sys/leases/tidy to handle more cleanup cases [GH-2452]

BUG FIXES:

• api: Respect a configured path in Vault's address [GH-2588]
• auth/aws-ec2: New bounds added as criteria to allow role creation [GH-2600]
• auth/ldap: Don't lowercase groups attached to users [GH-2613]
• cli: Don't panic if vault write is used with the force flag but no path [GH-2674]
• core: Help operations should request forward since standbys may not have appropriate info [GH-2677]
• replication: Fix enabling secondaries when certain mounts already existed on the primary
• secret/mssql: Update mssql driver to support queries with colons [GH-2610]
• secret/pki: Don't lowercase O/OU values in certs [GH-2555]
• secret/pki: Don't attempt to validate IP SANs if none are provided [GH-2574]
• secret/ssh: Don't automatically lowercase principles in issued SSH certs [GH-2591]
• storage/consul: Properly handle state events rather than timing out [GH-2548]
• storage/etcd3: Ensure locks are released if client is improperly shut down [GH-2526]

0.7.0 (March 21th, 2017)

SECURITY:

• Common name not being validated when exclude_cn_from_sans option used in pki backend: When using a role in the pki backend that specified the exclude_cn_from_sans option, the common name would not then be properly validated against the role's constraints. This has been fixed. We recommend any users of this feature to upgrade to 0.7 as soon as feasible.

DEPRECATIONS/CHANGES:

• List Operations Always Use Trailing Slash: Any list operation, whether via the GET or LIST HTTP verb, will now internally canonicalize the path to have a trailing slash. This makes policy writing more predictable, as it means clients will no longer work or fail based on which client they're using or which HTTP verb they're using. However, it also means that policies allowing list capability must be carefully checked to ensure that they contain a trailing slash; some policies may need to be split into multiple stanzas to accommodate.
• PKI Defaults to Unleased Certificates: When issuing certificates from the PKI backend, by default, no leases will be issued. If you want to manually revoke a certificate, its serial number can be used with the pki/revoke endpoint. Issuing leases is still possible by enabling the generate_lease toggle in PKI role entries (this will default to true for upgrades, to keep existing behavior), which will allow using lease IDs to revoke certificates. For installations issuing large numbers of certificates (tens to hundreds of thousands, or millions), this will significantly improve Vault startup time since leases associated with these certificates will not have to be loaded; however note that it also means that revocation of a token used to issue certificates will no longer add these certificates to a CRL. If this behavior is desired or needed, consider keeping leases enabled and ensuring lifetimes are reasonable, and issue long-lived certificates via a different role with leases disabled.

FEATURES:

• Replication (Enterprise): Vault Enterprise now has support for creating a multi-datacenter replication set between clusters. The current replication offering is based on an asynchronous primary/secondary (1:N) model that replicates static data while keeping dynamic data (leases, tokens) cluster-local, focusing on horizontal scaling for high-throughput and high-fanout deployments.
• Response Wrapping & Replication in the Vault Enterprise UI: Vault Enterprise UI now supports looking up and rotating response wrapping tokens, as well as creating tokens with arbitrary values inside. It also now supports replication functionality, enabling the configuration of a replication set in the UI.
• Expanded Access Control Policies: Access control policies can now specify allowed and denied parameters -- and, optionally, their values -- to control what a client can and cannot submit during an API call. Policies can also specify minimum/maximum response wrapping TTLs to both enforce the use of response wrapping and control the duration of resultant wrapping tokens. See the policies concepts page for more information.
• SSH Backend As Certificate Authority: The SSH backend can now be configured to sign host and user certificates. Each mount of the backend acts as an independent signing authority. The CA key pair can be configured for each mount and the public key is accessible via an unauthenticated API call; additionally, the backend can generate a public/private key pair for you. We recommend using separate mounts for signing host and user certificates.

IMPROVEMENTS:

• api/request: Passing username and password information in API request [GH-2469]
• audit: Logging the token's use count with authentication response and logging the remaining uses of the client token with request [GH-2437]
• auth/approle: Support for restricting the number of uses on the tokens issued [GH-2435]
• auth/aws-ec2: AWS EC2 auth backend now supports constraints for VPC ID, Subnet ID and Region [GH-2407]
• auth/ldap: Use the value of the LOGNAME or USER env vars for the username if not explicitly set on the command line when authenticating [GH-2154]
• audit: Support adding a configurable prefix (such as @cee) before each line [GH-2359]
• core: Canonicalize list operations to use a trailing slash [GH-2390]
• core: Add option to disable caching on a per-mount level [GH-2455]
• core: Add ability to require valid client certs in listener config [GH-2457]
• physical/dynamodb: Implement a session timeout to avoid having to use recovery mode in the case of an unclean shutdown, which makes HA much safer [GH-2141]
• secret/pki: O (Organization) values can now be set to role-defined values for issued/signed certificates [GH-2369]
• secret/pki: Certificates issued/signed from PKI backend do not generate leases by default [GH-2403]
• secret/pki: When using DER format, still return the private key type [GH-2405]
• secret/pki: Add an intermediate to the CA chain even if it lacks an authority key ID [GH-2465]
• secret/pki: Add role option to use CSR SANs [GH-2489]
• secret/ssh: SSH backend as CA to sign user and host certificates [GH-2208]
• secret/ssh: Support reading of SSH CA public key from config/ca endpoint and also return it when CA key pair is generated [GH-2483]

BUG FIXES:

• audit: When auditing headers use case-insensitive comparisons [GH-2362]
• auth/aws-ec2: Return role period in seconds and not nanoseconds [GH-2374]
• auth/okta: Fix panic if user had no local groups and/or policies set [GH-2367]
• command/server: Fix parsing of redirect address when port is not mentioned [GH-2354]
• physical/postgresql: Fix listing returning incorrect results if there were multiple levels of children [GH-2393]

0.6.5 (February 7th, 2017)

FEATURES:

• Okta Authentication: A new Okta authentication backend allows you to use Okta usernames and passwords to authenticate to Vault. If provided with an appropriate Okta API token, group membership can be queried to assign policies; users and groups can be defined locally as well.
• RADIUS Authentication: A new RADIUS authentication backend allows using a RADIUS server to authenticate to Vault. Policies can be configured for specific users or for any authenticated user.
• Exportable Transit Keys: Keys in transit can now be marked as exportable at creation time. This allows a properly ACL'd user to retrieve the associated signing key, encryption key, or HMAC key. The exportable value is returned on a key policy read and cannot be changed, so if a key is marked exportable it will always be exportable, and if it is not it will never be exportable.
• Batch Transit Operations: encrypt, decrypt and rewrap operations in the transit backend now support processing multiple input items in one call, returning the output of each item in the response.
• Configurable Audited HTTP Headers: You can now specify headers that you want to have included in each audit entry, along with whether each header should be HMAC'd or kept plaintext. This can be useful for adding additional client or network metadata to the audit logs.
• Transit Backend UI (Enterprise): Vault Enterprise UI now supports the transit backend, allowing creation, viewing and editing of named keys as well as using those keys to perform supported transit operations directly in the UI.
• Socket Audit Backend A new socket audit backend allows audit logs to be sent through TCP, UDP, or UNIX Sockets.

IMPROVEMENTS:

• auth/aws-ec2: Add support for cross-account auth using STS [GH-2148]
• auth/aws-ec2: Support issuing periodic tokens [GH-2324]
• auth/github: Support listing teams and users [GH-2261]
• auth/ldap: Support adding policies to local users directly, in addition to local groups [GH-2152]
• command/server: Add ability to select and prefer server cipher suites [GH-2293]
• core: Add a nonce to unseal operations as a check (useful mostly for support, not as a security principle) [GH-2276]
• duo: Added ability to supply extra context to Duo pushes [GH-2118]
• physical/consul: Add option for setting consistency mode on Consul gets [GH-2282]
• physical/etcd: Full v3 API support; code will autodetect which API version to use. The v3 code path is significantly less complicated and may be much more stable. [GH-2168]
• secret/pki: Allow specifying OU entries in generated certificate subjects [GH-2251]
• secret mount ui (Enterprise): the secret mount list now shows all mounted backends even if the UI cannot browse them. Additional backends can now be mounted from the UI as well.

BUG FIXES:

• auth/token: Fix regression in 0.6.4 where using token store roles as a blacklist (with only disallowed_policies set) would not work in most circumstances [GH-2286]
• physical/s3: Page responses in client so list doesn't truncate [GH-2224]
• secret/cassandra: Stop a connection leak that could occur on active node failover [GH-2313]
• secret/pki: When using sign-verbatim, don't require a role and use the CSR's common name [GH-2243]

0.6.4 (December 16, 2016)

SECURITY:

Further details about these security issues can be found in the 0.6.4 upgrade guide.

• default Policy Privilege Escalation: If a parent token did not have the default policy attached to its token, it could still create children with the default policy. This is no longer allowed (unless the parent has sudo capability for the creation path). In most cases this is low severity since the access grants in the default policy are meant to be access grants that are acceptable for all tokens to have.
• Leases Not Expired When Limited Use Token Runs Out of Uses: When using limited-use tokens to create leased secrets, if the limited-use token was revoked due to running out of uses (rather than due to TTL expiration or explicit revocation) it would fail to revoke the leased secrets. These secrets would still be revoked when their TTL expired, limiting the severity of this issue. An endpoint has been added (auth/token/tidy) that can perform housekeeping tasks on the token store; one of its tasks can detect this situation and revoke the associated leases.

FEATURES:

• Policy UI (Enterprise): Vault Enterprise UI now supports viewing, creating, and editing policies.

IMPROVEMENTS:

• http: Vault now sets a no-store cache control header to make it more secure in setups that are not end-to-end encrypted [GH-2183]

BUG FIXES:

• auth/ldap: Don't panic if dialing returns an error and starttls is enabled; instead, return the error [GH-2188]
• ui (Enterprise): Submitting an unseal key now properly resets the form so a browser refresh isn't required to continue.

0.6.3 (December 6, 2016)

DEPRECATIONS/CHANGES:

• Request size limitation: A maximum request size of 32MB is imposed to prevent a denial of service attack with arbitrarily large requests [GH-2108]
• LDAP denies passwordless binds by default: In new LDAP mounts, or when existing LDAP mounts are rewritten, passwordless binds will be denied by default. The new deny_null_bind parameter can be set to false to allow these. [GH-2103]
• Any audit backend activated satisfies conditions: Previously, when a new Vault node was taking over service in an HA cluster, all audit backends were required to be loaded successfully to take over active duty. This behavior now matches the behavior of the audit logging system itself: at least one audit backend must successfully be loaded. The server log contains an error when this occurs. This helps keep a Vault HA cluster working when there is a misconfiguration on a standby node. [GH-2083]

FEATURES:

• Web UI (Enterprise): Vault Enterprise now contains a built-in web UI that offers access to a number of features, including init/unsealing/sealing, authentication via userpass or LDAP, and K/V reading/writing. The capability set of the UI will be expanding rapidly in further releases. To enable it, set ui = true in the top level of Vault's configuration file and point a web browser at your Vault address.
• Google Cloud Storage Physical Backend: You can now use GCS for storing Vault data [GH-2099]

IMPROVEMENTS:

• auth/github: Policies can now be assigned to users as well as to teams [GH-2079]
• cli: Set the number of retries on 500 down to 0 by default (no retrying). It can be very confusing to users when there is a pause while the retries happen if they haven't explicitly set it. With request forwarding the need for this is lessened anyways. [GH-2093]
• core: Response wrapping is now allowed to be specified by backend responses (requires backends gaining support) [GH-2088]
• physical/consul: When announcing service, use the scheme of the Vault server rather than the Consul client [GH-2146]
• secret/consul: Added listing functionality to roles [GH-2065]
• secret/postgresql: Added revocation_sql parameter on the role endpoint to enable customization of user revocation SQL statements [GH-2033]
• secret/transit: Add listing of keys [GH-1987]

BUG FIXES:

• api/unwrap, command/unwrap: Increase compatibility of unwrap command with Vault 0.6.1 and older [GH-2014]
• api/unwrap, command/unwrap: Fix error when no client token exists [GH-2077]
• auth/approle: Creating the index for the role_id properly [GH-2004]
• auth/aws-ec2: Handle the case of multiple upgrade attempts when setting the instance-profile ARN [GH-2035]
• auth/ldap: Avoid leaking connections on login [GH-2130]
• command/path-help: Use the actual error generated by Vault rather than always using 500 when there is a path help error [GH-2153]
• command/ssh: Use temporary file for identity and ensure its deletion before the command returns [GH-2016]
• cli: Fix error printing values with -field if the values contained formatting directives [GH-2109]
• command/server: Don't say mlock is supported on OSX when it isn't. [GH-2120]
• core: Fix bug where a failure to come up as active node (e.g. if an audit backend failed) could lead to deadlock [GH-2083]
• physical/mysql: Fix potential crash during setup due to a query failure [GH-2105]
• secret/consul: Fix panic on user error [GH-2145]

0.6.2 (October 5, 2016)

DEPRECATIONS/CHANGES:

• Convergent Encryption v2: New keys in transit using convergent mode will use a new nonce derivation mechanism rather than require the user to supply a nonce. While not explicitly increasing security, it minimizes the likelihood that a user will use the mode improperly and impact the security of their keys. Keys in convergent mode that were created in v0.6.1 will continue to work with the same mechanism (user-supplied nonce).
• etcd HA off by default: Following in the footsteps of dynamodb, the etcd storage backend now requires that ha_enabled be explicitly specified in the configuration file. The backend currently has known broken HA behavior, so this flag discourages use by default without explicitly enabling it. If you are using this functionality, when upgrading, you should set ha_enabled to "true" before starting the new versions of Vault.
• Default/Max lease/token TTLs are now 32 days: In previous versions of Vault the default was 30 days, but moving it to 32 days allows some operations (e.g. reauthenticating, renewing, etc.) to be performed via a monthly cron job.
• AppRole Secret ID endpoints changed: Secret ID and Secret ID accessors are no longer part of request URLs. The GET and DELETE operations are now moved to new endpoints (/lookup and /destroy) which consumes the input from the body and not the URL.
• AppRole requires at least one constraint: previously it was sufficient to turn off all AppRole authentication constraints (secret ID, CIDR block) and use the role ID only. It is now required that at least one additional constraint is enabled. Existing roles are unaffected, but any new roles or updated roles will require this.
• Reading wrapped responses from cubbyhole/response is deprecated. The sys/wrapping/unwrap endpoint should be used instead as it provides additional security, auditing, and other benefits. The ability to read directly will be removed in a future release.
• Request Forwarding is now on by default: in 0.6.1 this required toggling on, but is now enabled by default. This can be disabled via the "disable_clustering" parameter in Vault's config, or per-request with the X-Vault-No-Request-Forwarding header.
• In prior versions a bug caused the bound_iam_role_arn value in the aws-ec2 authentication backend to actually use the instance profile ARN. This has been corrected, but as a result there is a behavior change. To match using the instance profile ARN, a new parameter bound_iam_instance_profile_arn has been added. Existing roles will automatically transfer the value over to the correct parameter, but the next time the role is updated, the new meanings will take effect.

FEATURES:

• Secret ID CIDR Restrictions in AppRole: Secret IDs generated under an approle can now specify a list of CIDR blocks from where the requests to generate secret IDs should originate from. If an approle already has CIDR restrictions specified, the CIDR restrictions on the secret ID should be a subset of those specified on the role [GH-1910]
• Initial Root Token PGP Encryption: Similar to generate-root, the root token created at initialization time can now be PGP encrypted [GH-1883]
• Support Chained Intermediate CAs in pki: The pki backend now allows, when a CA cert is being supplied as a signed root or intermediate, a trust chain of arbitrary length. The chain is returned as a parameter at certificate issue/sign time and is retrievable independently as well. [GH-1694]
• Response Wrapping Enhancements: There are new endpoints to look up response wrapped token parameters; wrap arbitrary values; rotate wrapping tokens; and unwrap with enhanced validation. In addition, list operations can now be response-wrapped. [GH-1927]
• Transit Features: The transit backend now supports generating random bytes and SHA sums; HMACs; and signing and verification functionality using EC keys (P-256 curve)

IMPROVEMENTS:

• api: Return error when an invalid (as opposed to incorrect) unseal key is submitted, rather than ignoring it [GH-1782]
• api: Add method to call auth/token/create-orphan endpoint [GH-1834]
• api: Rekey operation now redirects from standbys to master [GH-1862]
• audit/file: Sending a SIGHUP to Vault now causes Vault to close and re-open the log file, making it easier to rotate audit logs [GH-1953]
• auth/aws-ec2: EC2 instances can get authenticated by presenting the identity document and its SHA256 RSA digest [GH-1961]
• auth/aws-ec2: IAM bound parameters on the aws-ec2 backend will perform a prefix match instead of exact match [GH-1943]
• auth/aws-ec2: Added a new constraint bound_iam_instance_profile_arn to refer to IAM instance profile ARN and fixed the earlier bound_iam_role_arn to refer to IAM role ARN instead of the instance profile ARN [GH-1913]
• auth/aws-ec2: Backend generates the nonce by default and clients can explicitly disable reauthentication by setting empty nonce [GH-1889]
• auth/token: Added warnings if tokens and accessors are used in URLs [GH-1806]
• command/format: The format flag on select CLI commands takes yml as an alias for yaml [GH-1899]
• core: Allow the size of the read cache to be set via the config file, and change the default value to 1MB (from 32KB) [GH-1784]
• core: Allow single and two-character path parameters for most places [GH-1811]
• core: Allow list operations to be response-wrapped [GH-1814]
• core: Provide better protection against timing attacks in Shamir code [GH-1877]
• core: Unmounting/disabling backends no longer returns an error if the mount didn't exist. This is line with elsewhere in Vault's API where DELETE is an idempotent operation. [GH-1903]
• credential/approle: At least one constraint is required to be enabled while creating and updating a role [GH-1882]
• secret/cassandra: Added consistency level for use with roles [GH-1931]
• secret/mysql: SQL for revoking user can be configured on the role [GH-1914]
• secret/transit: Use HKDF (RFC 5869) as the key derivation function for new keys [GH-1812]
• secret/transit: Empty plaintext values are now allowed [GH-1874]

BUG FIXES:

• audit: Fix panic being caused by some values logging as underlying Go types instead of formatted strings [GH-1912]
• auth/approle: Fixed panic on deleting approle that doesn't exist [GH-1920]
• auth/approle: Not letting secret IDs and secret ID accessors to get logged in plaintext in audit logs [GH-1947]
• auth/aws-ec2: Allow authentication if the underlying host is in a bad state but the instance is running [GH-1884]
• auth/token: Fixed metadata getting missed out from token lookup response by gracefully handling token entry upgrade [GH-1924]
• cli: Don't error on newline in token file [GH-1774]
• core: Pass back content-type header for forwarded requests [GH-1791]
• core: Fix panic if the same key was given twice to generate-root [GH-1827]
• core: Fix potential deadlock on unmount/remount [GH-1793]
• physical/file: Remove empty directories from the file storage backend [GH-1821]
• physical/zookeeper: Remove empty directories from the zookeeper storage backend and add a fix to the file storage backend's logic [GH-1964]
• secret/aws: Added update operation to aws/sts path to consider ttl parameter [39b75c6]
• secret/aws: Mark STS secrets as non-renewable [GH-1804]
• secret/cassandra: Properly store session for re-use [GH-1802]
• secret/ssh: Fix panic when revoking SSH dynamic keys [GH-1781]

0.6.1 (August 22, 2016)

DEPRECATIONS/CHANGES:

• Once the active node is 0.6.1, standby nodes must also be 0.6.1 in order to connect to the HA cluster. We recommend following our general upgrade instructions in addition to 0.6.1-specific upgrade instructions to ensure that this is not an issue.
• Status codes for sealed/uninitialized Vaults have changed to 503/501 respectively. See the version-specific upgrade guide for more details.
• Root tokens (tokens with the root policy) can no longer be created except by another root token or the generate-root endpoint.
• Issued certificates from the pki backend against new roles created or modified after upgrading will contain a set of default key usages.
• The dynamodb physical data store no longer supports HA by default. It has some non-ideal behavior around failover that was causing confusion. See the documentation for information on enabling HA mode. It is very important that this configuration is added before upgrading.
• The ldap backend no longer searches for memberOf groups as part of its normal flow. Instead, the desired group filter must be specified. This fixes some errors and increases speed for directories with different structures, but if this behavior has been relied upon, ensure that you see the upgrade notes before upgrading.
• app-id is now deprecated with the addition of the new AppRole backend. There are no plans to remove it, but we encourage using AppRole whenever possible, as it offers enhanced functionality and can accommodate many more types of authentication paradigms.

FEATURES:

• AppRole Authentication Backend: The approle backend is a machine-oriented authentication backend that provides a similar concept to App-ID while adding many missing features, including a pull model that allows for the backend to generate authentication credentials rather than requiring operators or other systems to push credentials in. It should be useful in many more situations than App-ID. The inclusion of this backend deprecates App-ID. [GH-1426]
• Request Forwarding: Vault servers can now forward requests to each other rather than redirecting clients. This feature is off by default in 0.6.1 but will be on by default in the next release. See the HA concepts page for information on enabling and configuring it. [GH-443]
• Convergent Encryption in Transit: The transit backend now supports a convergent encryption mode where the same plaintext will produce the same ciphertext. Although very useful in some situations, this has potential security implications, which are mostly mitigated by requiring the use of key derivation when convergent encryption is enabled. See the transit backend documentation for more details. [GH-1537]
• Improved LDAP Group Filters: The ldap auth backend now uses templates to define group filters, providing the capability to support some directories that could not easily be supported before (especially specific Active Directory setups with nested groups). [GH-1388]
• Key Usage Control in PKI: Issued certificates from roles created or modified after upgrading contain a set of default key usages for increased compatibility with OpenVPN and some other software. This set can be changed when writing a role definition. Existing roles are unaffected. [GH-1552]
• Request Retrying in the CLI and Go API: Requests that fail with a 5xx error code will now retry after a backoff. The maximum total number of retries (including disabling this functionality) can be set with an environment variable. See the environment variable documentation for more details. [GH-1594]
• Service Discovery in vault init: The new -auto option on vault init will perform service discovery using Consul. When only one node is discovered, it will be initialized and when more than one node is discovered, they will be output for easy selection. See vault init --help for more details. [GH-1642]
• MongoDB Secret Backend: Generate dynamic unique MongoDB database credentials based on configured roles. Sponsored by CommerceHub. [GH-1414]
• Circonus Metrics Integration: Vault can now send metrics to Circonus. See the configuration documentation for details. [GH-1646]

IMPROVEMENTS:

• audit: Added a unique identifier to each request which will also be found in the request portion of the response. [GH-1650]
• auth/aws-ec2: Added a new constraint bound_account_id to the role [GH-1523]
• auth/aws-ec2: Added a new constraint bound_iam_role_arn to the role [GH-1522]
• auth/aws-ec2: Added ttl field for the role [GH-1703]
• auth/ldap, secret/cassandra, physical/consul: Clients with tls.Config have the minimum TLS version set to 1.2 by default. This is configurable.
• auth/token: Added endpoint to list accessors [GH-1676]
• auth/token: Added disallowed_policies option to token store roles [GH-1681]
• auth/token: root or sudo tokens can now create periodic tokens via auth/token/create; additionally, the same token can now be periodic and have an explicit max TTL [GH-1725]
• build: Add support for building on Solaris/Illumos [GH-1726]
• cli: Output formatting in the presence of warnings in the response object [GH-1533]
• cli: vault auth command supports a -path option to take in the path at which the auth backend is enabled, thereby allowing authenticating against different paths using the command options [GH-1532]
• cli: vault auth -methods will now display the config settings of the mount [GH-1531]
• cli: vault read/write/unwrap -field now allows selecting token response fields [GH-1567]
• cli: vault write -field now allows selecting wrapped response fields [GH-1567]
• command/status: Version information and cluster details added to the output of vault status command [GH-1671]
• core: Response wrapping is now enabled for login endpoints [GH-1588]
• core: The duration of leadership is now exported via events through telemetry [GH-1625]
• core: sys/capabilities-self is now accessible as part of the default policy [GH-1695]
• core: sys/renew is now accessible as part of the default policy [GH-1701]
• core: Unseal keys will now be returned in both hex and base64 forms, and either can be used [GH-1734]
• core: Responses from most /sys endpoints now return normal api.Secret structs in addition to the values they carried before. This means that response wrapping can now be used with most authenticated /sys operations [GH-1699]
• physical/etcd: Support ETCD_ADDR env var for specifying addresses [GH-1576]
• physical/consul: Allowing additional tags to be added to Consul service registration via service_tags option [GH-1643]
• secret/aws: Listing of roles is supported now [GH-1546]
• secret/cassandra: Add connect_timeout value for Cassandra connection configuration [GH-1581]
• secret/mssql,mysql,postgresql: Reading of connection settings is supported in all the sql backends [GH-1515]
• secret/mysql: Added optional maximum idle connections value to MySQL connection configuration [GH-1635]
• secret/mysql: Use a combination of the role name and token display name in generated user names and allow the length to be controlled [GH-1604]
• secret/{cassandra,mssql,mysql,postgresql}: SQL statements can now be passed in via one of four ways: a semicolon-delimited string, a base64-delimited string, a serialized JSON string array, or a base64-encoded serialized JSON string array [GH-1686]
• secret/ssh: Added allowed_roles to vault-ssh-helper's config and returning role name as part of response of verify API
• secret/ssh: Added passthrough of command line arguments to ssh [GH-1680]
• sys/health: Added version information to the response of health status endpoint [GH-1647]
• sys/health: Cluster information isbe returned as part of health status when Vault is unsealed [GH-1671]
• sys/mounts: MountTable data is compressed before serializing to accommodate thousands of mounts [GH-1693]
• website: The token concepts page has been completely rewritten [GH-1725]

BUG FIXES:

• auth/aws-ec2: Added a nil check for stored whitelist identity object during renewal [GH-1542]
• auth/cert: Fix panic if no client certificate is supplied [GH-1637]
• auth/token: Don't report that a non-expiring root token is renewable, as attempting to renew it results in an error [GH-1692]
• cli: Don't retry a command when a redirection is received [GH-1724]
• core: Fix regression causing status codes to be 400 in most non-5xx error cases [GH-1553]
• core: Fix panic that could occur during a leadership transition [GH-1627]
• physical/postgres: Remove use of prepared statements as this causes connection multiplexing software to break [GH-1548]
• physical/consul: Multiple Vault nodes on the same machine leading to check ID collisions were resulting in incorrect health check responses [GH-1628]
• physical/consul: Fix deregistration of health checks on exit [GH-1678]
• secret/postgresql: Check for existence of role before attempting deletion [GH-1575]
• secret/postgresql: Handle revoking roles that have privileges on sequences [GH-1573]
• secret/postgresql(,mysql,mssql): Fix incorrect use of database over transaction object which could lead to connection exhaustion [GH-1572]
• secret/pki: Fix parsing CA bundle containing trailing whitespace [GH-1634]
• secret/pki: Fix adding email addresses as SANs [GH-1688]
• secret/pki: Ensure that CRL values are always UTC, per RFC [GH-1727]
• sys/seal-status: Fixed nil Cluster object while checking seal status [GH-1715]

0.6.0 (June 14th, 2016)

SECURITY:

• Although sys/revoke-prefix was intended to revoke prefixes of secrets (via lease IDs, which incorporate path information) and auth/token/revoke-prefix was intended to revoke prefixes of tokens (using the tokens' paths and, since 0.5.2, role information), in implementation they both behaved exactly the same way since a single component in Vault is responsible for managing lifetimes of both, and the type of the tracked lifetime was not being checked. The end result was that either endpoint could revoke both secret leases and tokens. We consider this a very minor security issue as there are a number of mitigating factors: both endpoints require sudo capability in addition to write capability, preventing blanket ACL path globs from providing access; both work by using the prefix to revoke as a part of the endpoint path, allowing them to be properly ACL'd; and both are intended for emergency scenarios and users should already not generally have access to either one. In order to prevent confusion, we have simply removed auth/token/revoke-prefix in 0.6, and sys/revoke-prefix will be meant for both leases and tokens instead.

DEPRECATIONS/CHANGES:

• auth/token/revoke-prefix has been removed. See the security notice for details. [GH-1280]
• Vault will now automatically register itself as the vault service when using the consul backend and will perform its own health checks. See the Consul backend documentation for information on how to disable auto-registration and service checks.
• List operations that do not find any keys now return a 404 status code rather than an empty response object [GH-1365]
• CA certificates issued from the pki backend no longer have associated leases, and any CA certs already issued will ignore revocation requests from the lease manager. This is to prevent CA certificates from being revoked when the token used to issue the certificate expires; it was not be obvious to users that they need to ensure that the token lifetime needed to be at least as long as a potentially very long-lived CA cert.

FEATURES:

• AWS EC2 Auth Backend: Provides a secure introduction mechanism for AWS EC2 instances allowing automated retrieval of Vault tokens. Unlike most Vault authentication backends, this backend does not require first deploying or provisioning security-sensitive credentials (tokens, username/password, client certificates, etc). Instead, it treats AWS as a Trusted Third Party and uses the cryptographically signed dynamic metadata information that uniquely represents each EC2 instance. Vault Enterprise customers have access to a turnkey client that speaks the backend API and makes access to a Vault token easy.
• Response Wrapping: Nearly any response within Vault can now be wrapped inside a single-use, time-limited token's cubbyhole, taking the Cubbyhole Authentication Principles mechanism to its logical conclusion. Retrieving the original response is as simple as a single API command or the new vault unwrap command. This makes secret distribution easier and more secure, including secure introduction.
• Azure Physical Backend: You can now use Azure blob object storage as your Vault physical data store [GH-1266]
• Swift Physical Backend: You can now use Swift blob object storage as your Vault physical data store [GH-1425]
• Consul Backend Health Checks: The Consul backend will automatically register a vault service and perform its own health checking. By default the active node can be found at active.vault.service.consul and all with standby nodes are standby.vault.service.consul. Sealed vaults are marked critical and are not listed by default in Consul's service discovery. See the documentation for details. [GH-1349]
• Explicit Maximum Token TTLs: You can now set explicit maximum TTLs on tokens that do not honor changes in the system- or mount-set values. This is useful, for instance, when the max TTL of the system or the auth/token mount must be set high to accommodate certain needs but you want more granular restrictions on tokens being issued directly from the Token authentication backend at auth/token. [GH-1399]
• Non-Renewable Tokens: When creating tokens directly through the token authentication backend, you can now specify in both token store roles and the API whether or not a token should be renewable, defaulting to true.
• RabbitMQ Secret Backend: Vault can now generate credentials for RabbitMQ. Vhosts and tags can be defined within roles. [GH-788]

IMPROVEMENTS:

• audit: Add the DisplayName value to the copy of the Request object embedded in the associated Response, to match the original Request object [GH-1387]
• audit: Enable auditing of the seal and step-down commands [GH-1435]
• backends: Remove most root/sudo paths in favor of normal ACL mechanisms. A particular exception are any current MFA paths. A few paths in token and sys also require root or sudo. [GH-1478]
• command/auth: Restore the previous authenticated token if the auth command fails to authenticate the provided token [GH-1233]
• command/write: -format and -field can now be used with the write command [GH-1228]
• core: Add mlock support for FreeBSD, OpenBSD, and Darwin [GH-1297]
• core: Don't keep lease timers around when tokens are revoked [GH-1277]
• core: If using the disable_cache option, caches for the policy store and the transit backend are now disabled as well [GH-1346]
• credential/cert: Renewal requests are rejected if the set of policies has changed since the token was issued [GH-477]
• credential/cert: Check CRLs for specific non-CA certs configured in the backend [GH-1404]
• credential/ldap: If groupdn is not configured, skip searching LDAP and only return policies for local groups, plus a warning [GH-1283]
• credential/ldap: vault list support for users and groups [GH-1270]
• credential/ldap: Support for the memberOf attribute for group membership searching [GH-1245]
• credential/userpass: Add list support for users [GH-911]
• credential/userpass: Remove user configuration paths from requiring sudo, in favor of normal ACL mechanisms [GH-1312]
• credential/token: Sanitize policies and add default policies in appropriate places [GH-1235]
• credential/token: Setting the renewable status of a token is now possible via vault token-create and the API. The default is true, but tokens can be specified as non-renewable. [GH-1499]
• secret/aws: Use chain credentials to allow environment/EC2 instance/shared providers [GH-307]
• secret/aws: Support for STS AssumeRole functionality [GH-1318]
• secret/consul: Reading consul access configuration supported. The response will contain non-sensitive information only [GH-1445]
• secret/pki: Added exclude_cn_from_sans field to prevent adding the CN to DNS or Email Subject Alternate Names [GH-1220]
• secret/pki: Added list support for certificates [GH-1466]
• sys/capabilities: Enforce ACL checks for requests that query the capabilities of a token on a given path [GH-1221]
• sys/health: Status information can now be retrieved with HEAD [GH-1509]

BUG FIXES:

• command/read: Fix panic when using -field with a non-string value [GH-1308]
• command/token-lookup: Fix TTL showing as 0 depending on how a token was created. This only affected the value shown at lookup, not the token behavior itself. [GH-1306]
• command/various: Tell the JSON decoder to not convert all numbers to floats; fixes some various places where numbers were showing up in scientific notation
• command/server: Prioritized devRootTokenID and devListenAddress flags over their respective env vars [GH-1480]
• command/ssh: Provided option to disable host key checking. The automated variant of vault ssh command uses sshpass which was failing to handle host key checking presented by the ssh binary. [GH-1473]
• core: Properly persist mount-tuned TTLs for auth backends [GH-1371]
• core: Don't accidentally crosswire SIGINT to the reload handler [GH-1372]
• credential/github: Make organization comparison case-insensitive during login [GH-1359]
• credential/github: Fix panic when renewing a token created with some earlier versions of Vault [GH-1510]
• credential/github: The token used to log in via vault auth can now be specified in the VAULT_AUTH_GITHUB_TOKEN environment variable [GH-1511]
• credential/ldap: Fix problem where certain error conditions when configuring or opening LDAP connections would cause a panic instead of return a useful error message [GH-1262]
• credential/token: Fall back to normal parent-token semantics if allowed_policies is empty for a role. Using allowed_policies of default resulted in the same behavior anyways. [GH-1276]
• credential/token: Fix issues renewing tokens when using the "suffix" capability of token roles [GH-1331]
• credential/token: Fix lookup via POST showing the request token instead of the desired token [GH-1354]
• credential/various: Fix renewal conditions when default policy is not contained in the backend config [GH-1256]
• physical/s3: Don't panic in certain error cases from bad S3 responses [GH-1353]
• secret/consul: Use non-pooled Consul API client to avoid leaving files open [GH-1428]
• secret/pki: Don't check whether a certificate is destined to be a CA certificate if sign-verbatim endpoint is used [GH-1250]

0.5.3 (May 27th, 2016)

SECURITY:

• Consul ACL Token Revocation: An issue was reported to us indicating that generated Consul ACL tokens were not being properly revoked. Upon investigation, we found that this behavior was reproducible in a specific scenario: when a generated lease for a Consul ACL token had been renewed prior to revocation. In this case, the generated token was not being properly persisted internally through the renewal function, leading to an error during revocation due to the missing token. Unfortunately, this was coded as a user error rather than an internal error, and the revocation logic was expecting internal errors if revocation failed. As a result, the revocation logic believed the revocation to have succeeded when it in fact failed, causing the lease to be dropped while the token was still valid within Consul. In this release, the Consul backend properly persists the token through renewals, and the revocation logic has been changed to consider any error type to have been a failure to revoke, causing the lease to persist and attempt to be revoked later.

We have written an example shell script that searches through Consul's ACL tokens and looks for those generated by Vault, which can be used as a template for a revocation script as deemed necessary for any particular security response. The script is available at https://gist.github.com/jefferai/6233c2963f9407a858d84f9c27d725c0

Please note that any outstanding leases for Consul tokens produced prior to 0.5.3 that have been renewed will continue to exhibit this behavior. As a result, we recommend either revoking all tokens produced by the backend and issuing new ones, or if needed, a more advanced variant of the provided example could use the timestamp embedded in each generated token's name to decide which tokens are too old and should be deleted. This could then be run periodically up until the maximum lease time for any outstanding pre-0.5.3 tokens has expired.

This is a security-only release. There are no other code changes since 0.5.2. The binaries have one additional change: they are built against Go 1.6.1 rather than Go 1.6, as Go 1.6.1 contains two security fixes to the Go programming language itself.

0.5.2 (March 16th, 2016)

FEATURES:

• MSSQL Backend: Generate dynamic unique MSSQL database credentials based on configured roles [GH-998]
• Token Accessors: Vault now provides an accessor with each issued token. This accessor is an identifier that can be used for a limited set of actions, notably for token revocation. This value can be logged in plaintext to audit logs, and in combination with the plaintext metadata logged to audit logs, provides a searchable and straightforward way to revoke particular users' or services' tokens in many cases. To enable plaintext audit logging of these accessors, set hmac_accessor=false when enabling an audit backend.
• Token Credential Backend Roles: Roles can now be created in the token credential backend that allow modifying token behavior in ways that are not otherwise exposed or easily delegated. This allows creating tokens with a fixed set (or subset) of policies (rather than a subset of the calling token's), periodic tokens with a fixed TTL but no expiration, specified prefixes, and orphans.
• Listener Certificate Reloading: Vault's configured listeners now reload their TLS certificate and private key when the Vault process receives a SIGHUP.

IMPROVEMENTS:

• auth/token: Endpoints optionally accept tokens from the HTTP body rather than just from the URLs [GH-1211]
• auth/token,sys/capabilities: Added new endpoints auth/token/lookup-accessor, auth/token/revoke-accessor and sys/capabilities-accessor, which enables performing the respective actions with just the accessor of the tokens, without having access to the actual token [GH-1188]
• core: Ignore leading / in policy paths [GH-1170]
• core: Ignore leading / in mount paths [GH-1172]
• command/policy-write: Provided HCL is now validated for format violations and provides helpful information around where the violation occurred [GH-1200]
• command/server: The initial root token ID when running in -dev mode can now be specified via -dev-root-token-id or the environment variable VAULT_DEV_ROOT_TOKEN_ID [GH-1162]
• command/server: The listen address when running in -dev mode can now be specified via -dev-listen-address or the environment variable VAULT_DEV_LISTEN_ADDRESS [GH-1169]
• command/server: The configured listeners now reload their TLS certificates/keys when Vault is SIGHUP'd [GH-1196]
• command/step-down: New vault step-down command and API endpoint to force the targeted node to give up active status, but without sealing. The node will wait ten seconds before attempting to grab the lock again. [GH-1146]
• command/token-renew: Allow no token to be passed in; use renew-self in this case. Change the behavior for any token being passed in to use renew. [GH-1150]
• credential/app-id: Allow app-id parameter to be given in the login path; this causes the app-id to be part of the token path, making it easier to use with revoke-prefix [GH-424]
• credential/cert: Non-CA certificates can be used for authentication. They must be matched exactly (issuer and serial number) for authentication, and the certificate must carry the client authentication or 'any' extended usage attributes. [GH-1153]
• credential/cert: Subject and Authority key IDs are output in metadata; this allows more flexible searching/revocation in the audit logs [GH-1183]
• credential/cert: Support listing configured certs [GH-1212]
• credential/userpass: Add support for create/update capability distinction in user path, and add user-specific endpoints to allow changing the password and policies [GH-1216]
• credential/token: Add roles [GH-1155]
• secret/mssql: Add MSSQL backend [GH-998]
• secret/pki: Add revocation time (zero or Unix epoch) to pki/cert/SERIAL endpoint [GH-1180]
• secret/pki: Sanitize serial number in pki/revoke endpoint to allow some other formats [GH-1187]
• secret/ssh: Added documentation for ssh/config/zeroaddress endpoint. [GH-1154]
• sys: Added new endpoints sys/capabilities and sys/capabilities-self to fetch the capabilities of a token on a given path [GH-1171]
• sys: Added sys/revoke-force, which enables a user to ignore backend errors when revoking a lease, necessary in some emergency/failure scenarios [GH-1168]
• sys: The return codes from sys/health can now be user-specified via query parameters [GH-1199]

BUG FIXES:

• logical/cassandra: Apply hyphen/underscore replacement to the entire generated username, not just the UUID, in order to handle token display name hyphens [GH-1140]
• physical/etcd: Output actual error when cluster sync fails [GH-1141]
• vault/expiration: Not letting the error responses from the backends to skip during renewals [GH-1176]

0.5.1 (February 25th, 2016)

DEPRECATIONS/CHANGES:

• RSA keys less than 2048 bits are no longer supported in the PKI backend. 1024-bit keys are considered unsafe and are disallowed in the Internet PKI. The pki backend has enforced SHA256 hashes in signatures from the beginning, and software that can handle these hashes should be able to handle larger key sizes. [GH-1095]
• The PKI backend now does not automatically delete expired certificates, including from the CRL. Doing so could lead to a situation where a time mismatch between the Vault server and clients could result in a certificate that would not be considered expired by a client being removed from the CRL. The new pki/tidy endpoint can be used to trigger expirations. [GH-1129]
• The cert backend now performs a variant of channel binding at renewal time for increased security. In order to not overly burden clients, a notion of identity is used. This functionality can be disabled. See the 0.5.1 upgrade guide for more specific information [GH-1127]

FEATURES:

• Codebase Audit: Vault's 0.5 codebase was audited by iSEC. (The terms of the audit contract do not allow us to make the results public.) [GH-220]

IMPROVEMENTS:

• api: The VAULT_TLS_SERVER_NAME environment variable can be used to control the SNI header during TLS connections [GH-1131]
• api/health: Add the server's time in UTC to health responses [GH-1117]
• command/rekey and command/generate-root: These now return the status at attempt initialization time, rather than requiring a separate fetch for the nonce [GH-1054]
• credential/cert: Don't require root/sudo tokens for the certs/ and crls/ paths; use normal ACL behavior instead [GH-468]
• credential/github: The validity of the token used for login will be checked at renewal time [GH-1047]
• credential/github: The config endpoint no longer requires a root token; normal ACL path matching applies
• deps: Use the standardized Go 1.6 vendoring system
• secret/aws: Inform users of AWS-imposed policy restrictions around STS tokens if they attempt to use an invalid policy [GH-1113]
• secret/mysql: The MySQL backend now allows disabling verification of the connection_url [GH-1096]
• secret/pki: Submitted CSRs are now verified to have the correct key type and minimum number of bits according to the role. The exception is intermediate CA signing and the sign-verbatim path [GH-1104]
• secret/pki: New tidy endpoint to allow expunging expired certificates. [GH-1129]
• secret/postgresql: The PostgreSQL backend now allows disabling verification of the connection_url [GH-1096]
• secret/ssh: When verifying an OTP, return 400 if it is not valid instead of 204 [GH-1086]
• credential/app-id: App ID backend will check the validity of app-id and user-id during renewal time [GH-1039]
• credential/cert: TLS Certificates backend, during renewal, will now match the client identity with the client identity used during login [GH-1127]

BUG FIXES:

• credential/ldap: Properly escape values being provided to search filters [GH-1100]
• secret/aws: Capping on length of usernames for both IAM and STS types [GH-1102]
• secret/pki: If a cert is not found during lookup of a serial number, respond with a 400 rather than a 500 [GH-1085]
• secret/postgresql: Add extra revocation statements to better handle more permission scenarios [GH-1053]
• secret/postgresql: Make connection_url work properly [GH-1112]

0.5.0 (February 10, 2016)

SECURITY:

• Previous versions of Vault could allow a malicious user to hijack the rekey operation by canceling an operation in progress and starting a new one. The practical application of this is very small. If the user was an unseal key owner, they could attempt to do this in order to either receive unencrypted reseal keys or to replace the PGP keys used for encryption with ones under their control. However, since this would invalidate any rekey progress, they would need other unseal key holders to resubmit, which would be rather suspicious during this manual operation if they were not also the original initiator of the rekey attempt. If the user was not an unseal key holder, there is no benefit to be gained; the only outcome that could be attempted would be a denial of service against a legitimate rekey operation by sending cancel requests over and over. Thanks to Josh Snyder for the report!

DEPRECATIONS/CHANGES:

• s3 physical backend: Environment variables are now preferred over configuration values. This makes it behave similar to the rest of Vault, which, in increasing order of preference, uses values from the configuration file, environment variables, and CLI flags. [GH-871]
• etcd physical backend: sync functionality is now supported and turned on by default. This can be disabled. [GH-921]
• transit: If a client attempts to encrypt a value with a key that does not yet exist, what happens now depends on the capabilities set in the client's ACL policies. If the client has create (or create and update) capability, the key will upsert as in the past. If the client has update capability, they will receive an error. [GH-1012]
• token-renew CLI command: If the token given for renewal is the same as the client token, the renew-self endpoint will be used in the API. Given that the default policy (by default) allows all clients access to the renew-self endpoint, this makes it much more likely that the intended operation will be successful. [GH-894]
• Token lookup: the ttl value in the response now reflects the actual remaining TTL rather than the original TTL specified when the token was created; this value is now located in creation_ttl [GH-986]
• Vault no longer uses grace periods on leases or token TTLs. Uncertainty about the length grace period for any given backend could cause confusion and uncertainty. [GH-1002]
• rekey: Rekey now requires a nonce to be supplied with key shares. This nonce is generated at the start of a rekey attempt and is unique for that attempt.
• status: The exit code for the status CLI command is now 2 for an uninitialized Vault instead of 1. 1 is returned for errors. This better matches the rest of the CLI.

FEATURES:

• Split Data/High Availability Physical Backends: You can now configure two separate physical backends: one to be used for High Availability coordination and another to be used for encrypted data storage. See the configuration documentation for details. [GH-395]
• Fine-Grained Access Control: Policies can now use the capabilities set to specify fine-grained control over operations allowed on a path, including separation of sudo privileges from other privileges. These can be mixed and matched in any way desired. The policy value is kept for backwards compatibility. See the updated policy documentation for details. [GH-914]
• List Support: Listing is now supported via the API and the new vault list command. This currently supports listing keys in the generic and cubbyhole backends and a few other places (noted in the IMPROVEMENTS section below). Different parts of the API and backends will need to implement list capabilities in ways that make sense to particular endpoints, so further support will appear over time. [GH-617]
• Root Token Generation via Unseal Keys: You can now use the generate-root CLI command to generate new orphaned, non-expiring root tokens in case the original is lost or revoked (accidentally or purposefully). This requires a quorum of unseal key holders. The output value is protected via any PGP key of the initiator's choosing or a one-time pad known only to the initiator (a suitable pad can be generated via the -genotp flag to the command. [GH-915]
• Unseal Key Archiving: You can now optionally have Vault store your unseal keys in your chosen physical store for disaster recovery purposes. This option is only available when the keys are encrypted with PGP. [GH-907]
• Keybase Support for PGP Encryption Keys: You can now specify Keybase users when passing in PGP keys to the init, rekey, and generate-root CLI commands. Public keys for these users will be fetched automatically. [GH-901]
• DynamoDB HA Physical Backend: There is now a new, community-supported HA-enabled physical backend using Amazon DynamoDB. See the configuration documentation for details. [GH-878]
• PostgreSQL Physical Backend: There is now a new, community-supported physical backend using PostgreSQL. See the configuration documentation for details. [GH-945]
• STS Support in AWS Secret Backend: You can now use the AWS secret backend to fetch STS tokens rather than IAM users. [GH-927]
• Speedups in the transit backend: The transit backend has gained a cache, and now loads only the working set of keys (e.g. from the min_decryption_version to the current key version) into its working set. This provides large speedups and potential memory savings when the rotate feature of the backend is used heavily.

IMPROVEMENTS:

• cli: Output secrets sorted by key name [GH-830]
• cli: Support YAML as an output format [GH-832]
• cli: Show an error if the output format is incorrect, rather than falling back to an empty table [GH-849]
• cli: Allow setting the advertise_addr for HA via the VAULT_ADVERTISE_ADDR environment variable [GH-581]
• cli/generate-root: Add generate-root and associated functionality [GH-915]
• cli/init: Add -check flag that returns whether Vault is initialized [GH-949]
• cli/server: Use internal functions for the token-helper rather than shelling out, which fixes some problems with using a static binary in Docker or paths with multiple spaces when launching in -dev mode [GH-850]
• cli/token-lookup: Add token-lookup command [GH-892]
• command/{init,rekey}: Allow ASCII-armored keychain files to be arguments for -pgp-keys [GH-940]
• conf: Use normal bool values rather than empty/non-empty for the tls_disable option [GH-802]
• credential/ldap: Add support for binding, both anonymously (to discover a user DN) and via a username and password [GH-975]
• credential/token: Add last_renewal_time to token lookup calls [GH-896]
• credential/token: Change ttl to reflect the current remaining TTL; the original value is in creation_ttl [GH-1007]
• helper/certutil: Add ability to parse PKCS#8 bundles [GH-829]
• logical/aws: You can now get STS tokens instead of IAM users [GH-927]
• logical/cassandra: Add protocol_version parameter to set the CQL proto version [GH-1005]
• logical/cubbyhole: Add cubbyhole access to default policy [GH-936]
• logical/mysql: Add list support for roles path [GH-984]
• logical/pki: Fix up key usages being specified for CAs [GH-989]
• logical/pki: Add list support for roles path [GH-985]
• logical/pki: Allow pem_bundle to be specified as the format, which provides a concatenated PEM bundle of returned values [GH-1008]
• logical/pki: Add 30 seconds of slack to the validity start period to accommodate some clock skew in machines [GH-1036]
• logical/postgres: Add max_idle_connections parameter [GH-950]
• logical/postgres: Add list support for roles path
• logical/ssh: Add list support for roles path [GH-983]
• logical/transit: Keys are archived and only keys between the latest version and min_decryption_version are loaded into the working set. This can provide a very large speed increase when rotating keys very often. [GH-977]
• logical/transit: Keys are now cached, which should provide a large speedup in most cases [GH-979]
• physical/cache: Use 2Q cache instead of straight LRU [GH-908]
• physical/etcd: Support basic auth [GH-859]
• physical/etcd: Support sync functionality and enable by default [GH-921]

BUG FIXES:

• api: Correct the HTTP verb used in the LookupSelf method [GH-887]
• api: Fix the output of Sys().MountConfig(...) to return proper values [GH-1017]
• command/read: Fix panic when an empty argument was given [GH-923]
• command/ssh: Fix panic when username lookup fails [GH-886]
• core: When running in standalone mode, don't advertise that we are active until post-unseal setup completes [GH-872]
• core: Update go-cleanhttp dependency to ensure idle connections aren't leaked [GH-867]
• core: Don't allow tokens to have duplicate policies [GH-897]
• core: Fix regression in sys/renew that caused information stored in the Secret part of the response to be lost [GH-912]
• physical: Use square brackets when setting an IPv6-based advertise address as the auto-detected advertise address [GH-883]
• physical/s3: Use an initialized client when using IAM roles to fix a regression introduced against newer versions of the AWS Go SDK [GH-836]
• secret/pki: Fix a condition where unmounting could fail if the CA certificate was not properly loaded [GH-946]
• secret/ssh: Fix a problem where SSH connections were not always closed properly [GH-942]

MISC:

• Clarified our stance on support for community-derived physical backends. See the configuration documentation for details.
• Add vault-java to libraries [GH-851]
• Various minor documentation fixes and improvements [GH-839] [GH-854] [GH-861] [GH-876] [GH-899] [GH-900] [GH-904] [GH-923] [GH-924] [GH-958] [GH-959] [GH-981] [GH-990] [GH-1024] [GH-1025]

BUILD NOTE:

• The HashiCorp-provided binary release of Vault 0.5.0 is built against a patched version of Go 1.5.3 containing two specific bug fixes affecting TLS certificate handling. These fixes are in the Go 1.6 tree and were cherry-picked on top of stock Go 1.5.3. If you want to examine the way in which the releases were built, please look at our cross-compilation Dockerfile.

0.4.1 (January 13, 2016)

SECURITY:

• Build against Go 1.5.3 to mitigate a security vulnerability introduced in Go 1.5. For more information, please see https://groups.google.com/forum/#!topic/golang-dev/MEATuOi_ei4

This is a security-only release; other than the version number and building against Go 1.5.3, there are no changes from 0.4.0.

0.4.0 (December 10, 2015)

DEPRECATIONS/CHANGES:

• Policy Name Casing: Policy names are now normalized to lower-case on write, helping prevent accidental case mismatches. For backwards compatibility, policy names are not currently normalized when reading or deleting. [GH-676]
• Default etcd port number: the default connection string for the etcd physical store uses port 2379 instead of port 4001, which is the port used by the supported version 2.x of etcd. [GH-753]
• As noted below in the FEATURES section, if your Vault installation contains a policy called default, new tokens created will inherit this policy automatically.
• In the PKI backend there have been a few minor breaking changes:
  • The token display name is no longer a valid option for providing a base domain for issuance. Since this name is prepended with the name of the authentication backend that issued it, it provided a faulty use-case at best and a confusing experience at worst. We hope to figure out a better per-token value in a future release.
  • The allowed_base_domain parameter has been changed to allowed_domains, which accepts a comma-separated list of domains. This allows issuing certificates with DNS subjects across multiple domains. If you had a configured allowed_base_domain parameter, it will be migrated automatically when the role is read (either via a normal read, or via issuing a certificate).

FEATURES:

• Significantly Enhanced PKI Backend: The pki backend can now generate and sign root CA certificates and intermediate CA CSRs. It can also now sign submitted client CSRs, as well as a significant number of other enhancements. See the updated documentation for the full API. [GH-666]
• CRL Checking for Certificate Authentication: The cert backend now supports pushing CRLs into the mount and using the contained serial numbers for revocation checking. See the documentation for the cert backend for more info. [GH-330]
• Default Policy: Vault now ensures that a policy named default is added to every token. This policy cannot be deleted, but it can be modified (including to an empty policy). There are three endpoints allowed in the default default policy, related to token self-management: lookup-self, which allows a token to retrieve its own information, and revoke-self and renew-self, which are self-explanatory. If your existing Vault installation contains a policy called default, it will not be overridden, but it will be added to each new token created. You can override this behavior when using manual token creation (i.e. not via an authentication backend) by setting the "no_default_policy" flag to true. [GH-732]

IMPROVEMENTS:

• api: API client now uses a 60 second timeout instead of indefinite [GH-681]
• api: Implement LookupSelf, RenewSelf, and RevokeSelf functions for auth tokens [GH-739]
• api: Standardize environment variable reading logic inside the API; the CLI now uses this but can still override via command-line parameters [GH-618]
• audit: HMAC-SHA256'd client tokens are now stored with each request entry. Previously they were only displayed at creation time; this allows much better traceability of client actions. [GH-713]
• audit: There is now a sys/audit-hash endpoint that can be used to generate an HMAC-SHA256'd value from provided data using the given audit backend's salt [GH-784]
• core: The physical storage read cache can now be disabled via "disable_cache" [GH-674]
• core: The unsealing process can now be reset midway through (this feature was documented before, but not enabled) [GH-695]
• core: Tokens can now renew themselves [GH-455]
• core: Base64-encoded PGP keys can be used with the CLI for init and rekey operations [GH-653]
• core: Print version on startup [GH-765]
• core: Access to sys/policy and sys/mounts now uses the normal ACL system instead of requiring a root token [GH-769]
• credential/token: Display whether or not a token is an orphan in the output of a lookup call [GH-766]
• logical: Allow . in path-based variables in many more locations [GH-244]
• logical: Responses now contain a "warnings" key containing a list of warnings returned from the server. These are conditions that did not require failing an operation, but of which the client should be aware. [GH-676]
• physical/(consul,etcd): Consul and etcd now use a connection pool to limit the number of outstanding operations, improving behavior when a lot of operations must happen at once [GH-677] [GH-780]
• physical/consul: The datacenter parameter was removed; It could not be effective unless the Vault node (or the Consul node it was connecting to) was in the datacenter specified, in which case it wasn't needed [GH-816]
• physical/etcd: Support TLS-encrypted connections and use a connection pool to limit the number of outstanding operations [GH-780]
• physical/s3: The S3 endpoint can now be configured, allowing using S3-API-compatible storage solutions [GH-750]
• physical/s3: The S3 bucket can now be configured with the AWS_S3_BUCKET environment variable [GH-758]
• secret/consul: Management tokens can now be created [GH-714]

BUG FIXES:

• api: API client now checks for a 301 response for redirects. Vault doesn't generate these, but in certain conditions Go's internal HTTP handler can generate them, leading to client errors.
• cli: token-create now supports the ttl parameter in addition to the deprecated lease parameter. [GH-688]
• core: Return data from generic backends on the last use of a limited-use token [GH-615]
• core: Fix upgrade path for leases created in generic prior to 0.3 [GH-673]
• core: Stale leader entries will now be reaped [GH-679]
• core: Using mount-tune on the auth/token path did not take effect. [GH-688]
• core: Fix a potential race condition when (un)sealing the vault with metrics enabled [GH-694]
• core: Fix an error that could happen in some failure scenarios where Vault could fail to revert to a clean state [GH-733]
• core: Ensure secondary indexes are removed when a lease is expired [GH-749]
• core: Ensure rollback manager uses an up-to-date mounts table [GH-771]
• everywhere: Don't use http.DefaultClient, as it shares state implicitly and is a source of hard-to-track-down bugs [GH-700]
• credential/token: Allow creating orphan tokens via an API path [GH-748]
• secret/generic: Validate given duration at write time, not just read time; if stored durations are not parseable, return a warning and the default duration rather than an error [GH-718]
• secret/generic: Return 400 instead of 500 when generic backend is written to with no data fields [GH-825]
• secret/postgresql: Revoke permissions before dropping a user or revocation may fail [GH-699]

MISC:

• Various documentation fixes and improvements [GH-685] [GH-688] [GH-697] [GH-710] [GH-715] [GH-831]

0.3.1 (October 6, 2015)

SECURITY:

• core: In certain failure scenarios, the full values of requests and responses would be logged [GH-665]

FEATURES:

• Settable Maximum Open Connections: The mysql and postgresql backends now allow setting the number of maximum open connections to the database, which was previously capped to 2. [GH-661]
• Renewable Tokens for GitHub: The github backend now supports specifying a TTL, enabling renewable tokens. [GH-664]

BUG FIXES:

• dist: linux-amd64 distribution was dynamically linked [GH-656]
• credential/github: Fix acceptance tests [GH-651]

MISC:

• Various minor documentation fixes and improvements [GH-649] [GH-650] [GH-654] [GH-663]

0.3.0 (September 28, 2015)

DEPRECATIONS/CHANGES:

Note: deprecations and breaking changes in upcoming releases are announced ahead of time on the "vault-tool" mailing list.

• Cookie Authentication Removed: As of 0.3 the only way to authenticate is via the X-Vault-Token header. Cookie authentication was hard to properly test, could result in browsers/tools/applications saving tokens in plaintext on disk, and other issues. [GH-564]
• Terminology/Field Names: Vault is transitioning from overloading the term "lease" to mean both "a set of metadata" and "the amount of time the metadata is valid". The latter is now being referred to as TTL (or "lease_duration" for backwards-compatibility); some parts of Vault have already switched to using "ttl" and others will follow in upcoming releases. In particular, the "token", "generic", and "pki" backends accept both "ttl" and "lease" but in 0.4 only "ttl" will be accepted. [GH-528]
• Downgrade Not Supported: Due to enhancements in the storage subsystem, values written by Vault 0.3+ will not be able to be read by prior versions of Vault. There are no expected upgrade issues, however, as with all critical infrastructure it is recommended to back up Vault's physical storage before upgrading.

FEATURES:

• SSH Backend: Vault can now be used to delegate SSH access to machines, via a (recommended) One-Time Password approach or by issuing dynamic keys. [GH-385]
• Cubbyhole Backend: This backend works similarly to the "generic" backend but provides a per-token workspace. This enables some additional authentication workflows (especially for containers) and can be useful to applications to e.g. store local credentials while being restarted or upgraded, rather than persisting to disk. [GH-612]
• Transit Backend Improvements: The transit backend now allows key rotation and datakey generation. For rotation, data encrypted with previous versions of the keys can still be decrypted, down to a (configurable) minimum previous version; there is a rewrap function for manual upgrades of ciphertext to newer versions. Additionally, the backend now allows generating and returning high-entropy keys of a configurable bitsize suitable for AES and other functions; this is returned wrapped by a named key, or optionally both wrapped and plaintext for immediate use. [GH-626]
• Global and Per-Mount Default/Max TTL Support: You can now set the default and maximum Time To Live for leases both globally and per-mount. Per-mount settings override global settings. Not all backends honor these settings yet, but the maximum is a hard limit enforced outside the backend. See the documentation for "/sys/mounts/" for details on configuring per-mount TTLs. [GH-469]
• PGP Encryption for Unseal Keys: When initializing or rotating Vault's master key, PGP/GPG public keys can now be provided. The output keys will be encrypted with the given keys, in order. [GH-570]
• Duo Multifactor Authentication Support: Backends that support MFA can now use Duo as the mechanism. [GH-464]
• Performance Improvements: Users of the "generic" backend will see a significant performance improvement as the backend no longer creates leases, although it does return TTLs (global/mount default, or set per-item) as before. [GH-631]
• Codebase Audit: Vault's codebase was audited by iSEC. (The terms of the audit contract do not allow us to make the results public.) [GH-220]

IMPROVEMENTS:

• audit: Log entries now contain a time field [GH-495]
• audit: Obfuscated audit entries now use hmac-sha256 instead of sha1 [GH-627]
• backends: Add ability for a cleanup function to be called on backend unmount [GH-608]
• config: Allow specifying minimum acceptable TLS version [GH-447]
• core: If trying to mount in a location that is already mounted, be more helpful about the error [GH-510]
• core: Be more explicit on failure if the issue is invalid JSON [GH-553]
• core: Tokens can now revoke themselves [GH-620]
• credential/app-id: Give a more specific error when sending a duplicate POST to sys/auth/app-id [GH-392]
• credential/github: Support custom API endpoints (e.g. for Github Enterprise) [GH-572]
• credential/ldap: Add per-user policies and option to login with userPrincipalName [GH-420]
• credential/token: Allow root tokens to specify the ID of a token being created from CLI [GH-502]
• credential/userpass: Enable renewals for login tokens [GH-623]
• scripts: Use /usr/bin/env to find Bash instead of hardcoding [GH-446]
• scripts: Use godep for build scripts to use same environment as tests [GH-404]
• secret/mysql: Allow reading configuration data [GH-529]
• secret/pki: Split "allow_any_name" logic to that and "enforce_hostnames", to allow for non-hostname values (e.g. for client certificates) [GH-555]
• storage/consul: Allow specifying certificates used to talk to Consul [GH-384]
• storage/mysql: Allow SSL encrypted connections [GH-439]
• storage/s3: Allow using temporary security credentials [GH-433]
• telemetry: Put telemetry object in configuration to allow more flexibility [GH-419]
• testing: Disable mlock for testing of logical backends so as not to require root [GH-479]

BUG FIXES:

• audit/file: Do not enable auditing if file permissions are invalid [GH-550]
• backends: Allow hyphens in endpoint patterns (fixes AWS and others) [GH-559]
• cli: Fixed missing setup of client TLS certificates if no custom CA was provided
• cli/read: Do not include a carriage return when using raw field output [GH-624]
• core: Bad input data could lead to a panic for that session, rather than returning an error [GH-503]
• core: Allow SHA2-384/SHA2-512 hashed certificates [GH-448]
• core: Do not return a Secret if there are no uses left on a token (since it will be unable to be used) [GH-615]
• core: Code paths that called lookup-self would decrement num_uses and potentially immediately revoke a token [GH-552]
• core: Some /sys/ paths would not properly redirect from a standby to the leader [GH-499] [GH-551]
• credential/aws: Translate spaces in a token's display name to avoid making IAM unhappy [GH-567]
• credential/github: Integration failed if more than ten organizations or teams [GH-489]
• credential/token: Tokens with sudo access to "auth/token/create" can now use root-only options [GH-629]
• secret/cassandra: Work around backwards-incompatible change made in Cassandra 2.2 preventing Vault from properly setting/revoking leases [GH-549]
• secret/mysql: Use varbinary instead of varchar to avoid InnoDB/UTF-8 issues [GH-522]
• secret/postgres: Explicitly set timezone in connections [GH-597]
• storage/etcd: Renew semaphore periodically to prevent leadership flapping [GH-606]
• storage/zk: Fix collisions in storage that could lead to data unavailability [GH-411]

MISC:

• Various documentation fixes and improvements [GH-412] [GH-474] [GH-476] [GH-482] [GH-483] [GH-486] [GH-508] [GH-568] [GH-574] [GH-586] [GH-590] [GH-591] [GH-592] [GH-595] [GH-613] [GH-637]
• Less "armon" in stack traces [GH-453]
• Sourcegraph integration [GH-456]

0.2.0 (July 13, 2015)

FEATURES:

• Key Rotation Support: The rotate command can be used to rotate the master encryption key used to write data to the storage (physical) backend. [GH-277]
• Rekey Support: Rekey can be used to rotate the master key and change the configuration of the unseal keys (number of shares, threshold required). [GH-277]
• New secret backend: pki: Enable Vault to be a certificate authority and generate signed TLS certificates. [GH-310]
• New secret backend: cassandra: Generate dynamic credentials for Cassandra [GH-363]
• New storage backend: etcd: store physical data in etcd [GH-259] [GH-297]
• New storage backend: s3: store physical data in S3. Does not support HA. [GH-242]
• New storage backend: MySQL: store physical data in MySQL. Does not support HA. [GH-324]
• transit secret backend supports derived keys for per-transaction unique keys [GH-399]

IMPROVEMENTS:

• cli/auth: Enable cert method [GH-380]
• cli/auth: read input from stdin [GH-250]
• cli/read: Ability to read a single field from a secret [GH-257]
• cli/write: Adding a force flag when no input required
• core: allow time duration format in place of seconds for some inputs
• core: audit log provides more useful information [GH-360]
• core: graceful shutdown for faster HA failover
• core: change policy format to use explicit globbing [GH-400] Any existing policy in Vault is automatically upgraded to avoid issues. All policy files must be updated for future writes. Adding the explicit glob character * to the path specification is all that is required.
• core: policy merging to give deny highest precedence [GH-400]
• credential/app-id: Protect against timing attack on app-id
• credential/cert: Record the common name in the metadata [GH-342]
• credential/ldap: Allow TLS verification to be disabled [GH-372]
• credential/ldap: More flexible names allowed [GH-245] [GH-379] [GH-367]
• credential/userpass: Protect against timing attack on password
• credential/userpass: Use bcrypt for password matching
• http: response codes improved to reflect error [GH-366]
• http: the sys/health endpoint supports ?standbyok to return 200 on standby [GH-389]
• secret/app-id: Support deleting AppID and UserIDs [GH-200]
• secret/consul: Fine grained lease control [GH-261]
• secret/transit: Decouple raw key from key management endpoint [GH-355]
• secret/transit: Upsert named key when encrypt is used [GH-355]
• storage/zk: Support for HA configuration [GH-252]
• storage/zk: Changing node representation. Backwards incompatible. [GH-416]

BUG FIXES:

• audit/file: file removing TLS connection state
• audit/syslog: fix removing TLS connection state
• command/*: commands accepting k=v allow blank values
• core: Allow building on FreeBSD [GH-365]
• core: Fixed various panics when audit logging enabled
• core: Lease renewal does not create redundant lease
• core: fixed leases with negative duration [GH-354]
• core: token renewal does not create child token
• core: fixing panic when lease increment is null [GH-408]
• credential/app-id: Salt the paths in storage backend to avoid information leak
• credential/cert: Fixing client certificate not being requested
• credential/cert: Fixing panic when no certificate match found [GH-361]
• http: Accept PUT as POST for sys/auth
• http: Accept PUT as POST for sys/mounts [GH-349]
• http: Return 503 when sealed [GH-225]
• secret/postgres: Username length is capped to exceeding limit
• server: Do not panic if backend not configured [GH-222]
• server: Explicitly check value of tls_diable [GH-201]
• storage/zk: Fixed issues with version conflicts [GH-190]

MISC:

• cli/path-help: renamed from help to avoid confusion

0.1.2 (May 11, 2015)

FEATURES:

• New physical backend: zookeeper: store physical data in Zookeeper. HA not supported yet.
• New credential backend: ldap: authenticate using LDAP credentials.

IMPROVEMENTS:

• core: Auth backends can store internal data about auth creds
• audit: display name for auth is shown in logs [GH-176]
• command/*: -insecure has been renamed to -tls-skip-verify [GH-130]
• command/*: VAULT_TOKEN overrides local stored auth [GH-162]
• command/server: environment variables are copy-pastable
• credential/app-id: hash of app and user ID are in metadata [GH-176]
• http: HTTP API accepts X-Vault-Token as auth header [GH-124]
• logical/*: Generate help output even if no synopsis specified

BUG FIXES:

• core: login endpoints should never return secrets
• core: Internal data should never be returned from core endpoints
• core: defer barrier initialization to as late as possible to avoid error cases during init that corrupt data (no data loss)
• core: guard against invalid init config earlier
• audit/file: create file if it doesn't exist [GH-148]
• command/*: ignore directories when traversing CA paths [GH-181]
• credential/*: all policy mapping keys are case insensitive [GH-163]
• physical/consul: Fixing path for locking so HA works in every case

0.1.1 (May 2, 2015)

SECURITY CHANGES:

• physical/file: create the storge with 0600 permissions [GH-102]
• token/disk: write the token to disk with 0600 perms

IMPROVEMENTS:

• core: Very verbose error if mlock fails [GH-59]
• command/*: On error with TLS oversized record, show more human-friendly error message. [GH-123]
• command/read: lease_renewable is now outputted along with the secret to show whether it is renewable or not
• command/server: Add configuration option to disable mlock
• command/server: Disable mlock for dev mode so it works on more systems

BUG FIXES:

• core: if token helper isn't absolute, prepend with path to Vault executable, not "vault" (which requires PATH) [GH-60]
• core: Any "mapping" routes allow hyphens in keys [GH-119]
• core: Validate advertise_addr is a valid URL with scheme [GH-106]
• command/auth: Using an invalid token won't crash [GH-75]
• credential/app-id: app and user IDs can have hyphens in keys [GH-119]
• helper/password: import proper DLL for Windows to ask password [GH-83]

0.1.0 (April 28, 2015)

• Initial release