QID 356749

Date Published: 2023-12-06

QID 356749: Amazon Linux Security Advisory for dovecot : ALAS2-2023-2365

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. (
( CVE-2022-30550)



Note: The preceding description block is extracted directly from the security advisory. Using automation, we have attempted to clean and format it as much as possible without introducing additional issues.

Successful exploitation of this vulnerability could lead to a securitybreach or could affect integrity, availability, and confidentiality.

  • CVSS V3 rated as Critical - 8.8 severity.
  • CVSS V2 rated as Medium - 5.4 severity.
    • Solution
    Please refer to Amazon advisory: ALAS2-2023-2365 for affected packages and patching details, or update with your package manager.
    Vendor References

    CVEs related to QID 356749

    CVE-2022-30550 |
    Software Advisories
    Advisory ID Software Component Link
    ALAS2-2023-2365 amazon linux 2 URL Logo alas.aws.amazon.com/AL2/ALAS-2023-2365.html
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