CVE-2022-30550 is a privilege escalation vulnerability affecting Dovecot versions 2.2 and 2.3 prior to 2.3.20. It arises when multiple passdb configurations share the same driver and args, leading to incorrect application of username_filter and mechanism settings. This flaw carries a CVSS score of 8.8 (High), indicating a network-exploitable vulnerability with low attack complexity that can result in high impact to confidentiality, integrity, and availability. There is currently no evidence of active exploitation, public exploit code, or significant community discussion surrounding this CVE.
| Vendor | Product | Version(s) | CPE |
|---|---|---|---|
>= 2.3, < 2.4.0CPE matchmatch criteria | cpe:2.3:a:dovecot:dovecot:*:*:*:*:*:*:*:* | ||
2.2CPE matchmatch criteria | cpe:2.3:a:dovecot:dovecot:2.2:*:*:*:*:*:*:* | ||
10.0CPE matchmatch criteria | cpe:2.3:o:debian:debian_linux:10.0:*:*:*:*:*:*:* |
CVSS version used by this source: 3.1
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
The average CVE in this peer group has 0.0 Twitter, 0.0 Reddit, 0.3 Bluesky, 0.1 Mastodon, and 0.2 GitHub mentions.
No media coverage found for this CVE.
The average CVE in this peer group has 0.1 InfoSec Media, 0.0 Vendor Blog, and 0.0 Security Researcher mentions.
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.
Jul 12, 2022dovecot: Privilege escalation when similar master and non-master passdbs are used
Jul 6, 2022Privilege escalation possible in dovecot when similar master and non-master passdbs are used
Jul 6, 2022Privilege escalation possible in dovecot when similar master and non-master passdbs are used
Jul 6, 2022Privilege escalation possible in dovecot when similar master and non-master passdbs are used
Jul 6, 2022Privilege escalation possible in dovecot when similar master and non-master passdbs are used
Jul 6, 2022CVE-2022-30550: Privilege escalation possible in dovecot when similar master and non-master passdbs are used
Jul 6, 2022Privilege escalation possible in dovecot when similar master and non-master passdbs are used
Jul 6, 2022CVE-2022-30550: Privilege escalation possible in dovecot when similar master and non-master passdbs are used
Jul 6, 2022