Test ID:	1.3.6.1.4.1.25623.1.0.148464
Category:	Privilege escalation
Title:	Dovecot 2.2.x <= 2.3.20 Privilege Escalation Vulnerability
Summary:	Dovecot is prone to a privilege escalation vulnerability.
Description:	Summary: Dovecot is prone to a privilege escalation vulnerability. Vulnerability Insight: When two passdb configuration entries exist in Dovecot configuration, which have the same driver and args settings, the 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 with certain configurations involving master user authentication. Dovecot documentation does not advise against the use of passdb definitions which 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. Vulnerability Impact: If same passwd file or PAM is used for both normal and master users, it is possible for an attacker to become master user. Affected Software/OS: Dovecot version 2.2.x through 2.3.20. Solution: No known solution was made available for at least one year since the disclosure of this vulnerability. Likely none will be provided anymore. General solution options are to upgrade to a newer release, disable respective features, remove the product or replace the product by another one. CVSS Score: 9.0 CVSS Vector: AV:N/AC:L/Au:S/C:C/I:C/A:C
Cross-Ref:	Common Vulnerability Exposure (CVE) ID: CVE-2022-30550 https://security.gentoo.org/glsa/202310-19 https://dovecot.org/security https://www.dovecot.org/download/ https://lists.debian.org/debian-lts-announce/2022/09/msg00032.html
Copyright	Copyright (C) 2022 Greenbone AG

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