CVE-2022-30550
First published: Sun Jul 17 2022(Updated: )
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.
Credit: cve@mitre.org cve@mitre.org
| Affected Software | Affected Version | How to fix |
|---|---|---|
| >=2.3<2.3.20 | ||
| =2.2 | ||
| =10.0 | ||
| Dovecot Dovecot | >=2.3<2.3.20 | |
| Dovecot Dovecot | =2.2 | |
| Debian Debian Linux | =10.0 |
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Reference Links
Frequently Asked Questions
What is CVE-2022-30550?
CVE-2022-30550 is a vulnerability discovered in the auth component of Dovecot 2.2 and 2.3 versions before 2.3.20.
What is the severity of CVE-2022-30550?
The severity of CVE-2022-30550 is high with a severity value of 8.8.
How does CVE-2022-30550 affect Dovecot?
CVE-2022-30550 can result in incorrect configuration settings being applied to passdb definitions in Dovecot.
Which software versions are affected by CVE-2022-30550?
CVE-2022-30550 affects Dovecot versions 2.2 and 2.3 (before version 2.3.20), as well as Debian Linux version 10.0.
How can I fix CVE-2022-30550?
To fix CVE-2022-30550, update to Dovecot version 2.3.20 or later.
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