UBUNTU-CVE-2013-6171

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    UBUNTU-CVE-2013-6171

    Published: 9 Dec 2013Last Modified: 4 Feb 2026
    Upstream:
    CVE-2013-6171
    Aliases:
    USN-3556-2

    Summary:

    Details: checkpassword-reply in Dovecot before 2.2.7 performs setuid operations to a user who is authenticating, which allows local users to bypass authentication and access virtual email accounts by attaching to the process and using a restricted file descriptor to modify account information in the response to the dovecot-auth server.

    References: https://ubuntu.com/security/CVE-2013-6171, http://www.dovecot.org/list/dovecot-news/2013-November/000264.html, http://wiki2.dovecot.org/AuthDatabase/CheckPassword#Security, https://ubuntu.com/security/notices/USN-3556-2, https://www.cve.org/CVERecord?id=CVE-2013-6171

    Affected packages

    Package

    Name: dovecot

    Purl: pkg:deb/ubuntu/dovecot@1:2.2.9-1ubuntu2?arch=source&distro=trusty

    Affected ranges

    Type: ECOSYSTEM

    Events:

    Introduced- 0
    Fixed -1:2.2.9-1ubuntu2

    Affected versions

    1:2.1.7-7ubuntu3

    Common Vulnerability Scoring System

    Attack Vector
    Network
    Adjacent
    Local
    Physical
    Privileges Required
    None
    Low
    High
    User Interaction
    None
    Required
    Scope
    Unchanged
    Changed
    Confidentiality
    None
    Low
    High
    Integrity
    None
    Low
    High
    Availability
    None
    Low
    High