CVE-2022-30550

dovecot: Privilege escalation when similar master and non-master passdbs are used

Published Jul 17, 2022 CVSS 3.1 · 8.8 High EPSS 2.3% KEV · Not listed
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.

Remediation

No solution or workaround provided in the CVE record

Tracking

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Advisories

Source ID Title
Debian DLA Debian DLA DLA-3122-1 dovecot security update
Ubuntu USN Ubuntu USN USN-5509-1 Dovecot vulnerability
History
Type Values Removed Values Added
Metrics ssvc

{'options': {'Automatable': 'no', 'Exploitation': 'none', 'Technical Impact': 'total'}, 'version': '2.0.3'}

Weaknesses

Sources

Status
PUBLISHED
Assigner
mitre
Published
Updated
Oct 15, 2024, 6:35 PM
Reserved
May 11, 2022, 12:00 AM
Status
Analyzed
Published
Jul 17, 2022, 7:15 PM
Modified
Jun 17, 2026, 4:43 AM
Severity
Moderate
Public date
Jul 6, 2022, 12:00 AM