open-vault/changelog/15494.txt
Alexander Scheel 5ca7065bda
Warn on empty Subject field for issuers (#15494)
* Warn on empty Subject field for issuers

When generating a root or signing an intermediate certificate, it is
possible to have Vault generate a certificate with an empty Subject.
These don't validate in most TLS implementations well, so add a warning.
Note that non-Common Name fields could be present to make a non-empty
subject, so simply requiring a CommonName isn't strictly the best.

For example:

    $ vault write pki/root/generate/exported common_name=""
    WARNING! The following warnings were returned from Vault:
      * This issuer certificate was generated without a Subject; this makes
      it likely that issuing leaf certs with this certificate will cause TLS
      validation libraries to reject this certificate.
    ....

Signed-off-by: Alexander Scheel <alex.scheel@hashicorp.com>

* Add changelog

Signed-off-by: Alexander Scheel <alex.scheel@hashicorp.com>
2022-05-18 10:15:37 -04:00

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```release-note:improvement
secrets/pki: Warn on empty Subject field during issuer generation (root/generate and root/sign-intermediate).
```