Vulnerability 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.
CVSS Score
HIGH
Affected Products
| Vendor | Product | Versions |
|---|---|---|
| Dovecot | Dovecot | >= 2.3, < 2.4.0 |
| Debian | Debian Linux | 10.0 |
Related Weaknesses (CWE)
References
- https://dovecot.org/securityVendor Advisory
- https://lists.debian.org/debian-lts-announce/2022/09/msg00032.htmlMailing ListThird Party Advisory
- https://security.gentoo.org/glsa/202310-19Third Party Advisory
- https://www.dovecot.org/download/Product
- https://www.openwall.com/lists/oss-security/2022/07/08/1Mailing ListPatchThird Party Advisory
- https://dovecot.org/securityVendor Advisory
- https://lists.debian.org/debian-lts-announce/2022/09/msg00032.htmlMailing ListThird Party Advisory
- https://security.gentoo.org/glsa/202310-19Third Party Advisory
- https://www.dovecot.org/download/Product
- https://www.openwall.com/lists/oss-security/2022/07/08/1Mailing ListPatchThird Party Advisory
FAQ
What is CVE-2022-30550?
CVE-2022-30550 is a vulnerability with a CVSS score of 8.8 (HIGH). 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 me...
How severe is CVE-2022-30550?
CVE-2022-30550 has been rated HIGH with a CVSS base score of 8.8/10. Review the CVSS metrics above for detailed severity breakdown.
Is there a patch for CVE-2022-30550?
Check the references section above for vendor advisories and patch information. Affected products include: Dovecot Dovecot, Debian Debian Linux.