[BUG] GSSAPI auth doesn't work on 2.3.11

[Aki Tuomi]

On 14.9.2020 15.48, Carlos Mogas da Silva wrote:
> Hi list!
>
> I have a CentOS 7 server running dovecot with GSSAPI auth enabled. Version 2.3.10 was working fine
> but after the upgrade to 2.3.11 it stopped working. On thing I see on the logs is that the user
> field comes up empty when compared to the 2.3.10. Example:
>
> 2.3.10:
> Sep 14 13:39:20 mail.r3pek.org dovecot[10189]: imap-login: Login: user=<r3pek at r3pek.org>,
> method=GSSAPI, rip=xxxx, lip=2a01:4f8:1c17:61c0::1, mpid=10195, TLS,
> session=<PaDSUkWvAOkgAQgY3LZuALKwbzMw3BW/>
>
> 2.3.11:
> Sep 14 12:19:24 mail.r3pek.org dovecot[9264]: imap-login: Disconnected (auth failed, 1 attempts in 6
> secs): user=<>, method=GSSAPI, rip=2001:818:dcb6:6e00:b2b0:6f33:30dc:15bf,
> lip=2a01:4f8:1c17:61c0::1, TLS, session=<pRubNESvMuQgAQgY3LZuALKwbzMw3BW/>
>
>
> Reverting back to 2.3.10 confirmed it's a 2.3.11 thing. Is there any change necessary after the
> upgrade to 2.3.11 or is this really a bug?


Hi!

This is a known bug, and will be fixed in next release. There is patch
for it at https://github.com/dovecot/core/pull/133


Aki Tuomi