CVE-2022-30550
Description
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.
Predictions
Heuristic predictions, AS-IS, for prioritization only.
Mitigations
No mitigations published for this CVE yet.
The vendor-content worker queues fetches as references arrive (check back in a few minutes). Or — if you've already worked around this in production — publish your fix to the community-verified tier.
✚ Propose a mitigation on Community → Mitigations published via the community go through AI scoring + 2 human reviewers + 7-day silent objection window before landing here withsource_tier=community-verified.
OS impact
SUSE Affected 1 release
| Version | Status | Fixed in |
|---|---|---|
| — | Affected | — |
AlmaLinux Fixed 1 release
| Version | Status | Fixed in |
|---|---|---|
| 9 | Fixed | dovecot-pigeonhole-2.3.16-7.el9.aarch64.rpm |
Arch Fixed 1 release
| Version | Status | Fixed in |
|---|---|---|
| — | Fixed | 2.3.20-1 |
Debian Fixed 5 releases
| Version | Status | Fixed in |
|---|---|---|
| trixie | Fixed | 1:2.3.19.1+dfsg1-2 |
| sid | Fixed | 1:2.3.19.1+dfsg1-2 |
| forky | Fixed | 1:2.3.19.1+dfsg1-2 |
| bullseye | Fixed | 1:2.3.13+dfsg1-2+deb11u1 |
| bookworm | Fixed | 1:2.3.19.1+dfsg1-2 |
Red Hat Fixed 2 releases
| Version | Status | Fixed in |
|---|---|---|
| 9 | Fixed | — |
| 8 | Fixed | — |
Rocky Linux Fixed 2 releases
| Version | Status | Fixed in |
|---|---|---|
| 9 | Fixed | — |
| 8 | Fixed | — |
References
- https://access.redhat.com/errata/RHSA-2022:8208
- https://security-tracker.debian.org/tracker/CVE-2022-30550
- https://errata.rockylinux.org/RLSA-2022:7623
- https://www.suse.com/security/cve/CVE-2022-30550.html
- https://errata.rockylinux.org/RLSA-2022:8208
- https://access.redhat.com/errata/RHSA-2022:7623
- https://bugzilla.redhat.com/2105070
- https://errata.almalinux.org/8/ALSA-2022-7623.html
- https://errata.almalinux.org/9/ALSA-2022-8208.html
Community-verified mitigations for this CVE will appear above when contributors publish them.
Verify integrity in audit chain (admin only). AS-IS.