An issue was discovered in the auth component in Dovecot 2.2 and 2.3 before 2.3.20. When two passdb configuration entries exist with the same driver a...
Fix status by distribution
Fixed packages published by each distribution for this CVE
- Alpine Linux ALPINE-CVE-2022-30550 dovecot Fixed in: 2.3.19.1-r5
- Debian DEBIAN-CVE-2022-30550 dovecot Fixed in: 1:2.3.13+dfsg1-2+deb11u1
Original description The description as published by the source.
An issue was discovered in the auth component in Dovecot 2.2 and 2.3 before 2.3.20. When two passdb configuration entries exist with the same driver and args settings, incorrect username_filter and mechanism settings can be applied to passdb definitions. These incorrectly applied settings can lead to an unintended security configuration and can permit privilege escalation in certain configurations. The documentation does not advise against the use of passdb definitions that have the same driver and args settings. One such configuration would be where an administrator wishes to use the same PAM configuration or passwd file for both normal and master users but use the username_filter setting to restrict which of the users is able to be a master user.
References
- advisory github.com
- advisory nvd.nist.gov
- advisory security.gentoo.org
- web dovecot.org
- web dovecot.org
- web openwall.com
- web lists.debian.org