[Dovecot] imapc vs auth-userdb security

[Timo Sirainen]

On 14.9.2011, at 14.40, Lutz Preßler wrote:

> with imapc settings coming from userdb (individual configuration necessary)
> there exists a security problem if access to auth-userdb socket is given
> to normal (shell) users:

So don't give it to them? :) Actually this should be pretty much solved with v2.1 defaults. If the auth-userdb socket is 0666 root:root (default now), it requires that the calling process either has root user/group privileges or its uid matches the one returned by userdb, otherwise it won't return any fields.