CVE-2016-2167

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    CVE-2016-2167

    Published: 5 May 2016Last Modified: 8 Jul 2026

    Summary:

    Details: The canonicalize_username function in svnserve/cyrus_auth.c in Apache Subversion before 1.8.16 and 1.9.x before 1.9.4, when Cyrus SASL authentication is used, allows remote attackers to authenticate and bypass intended access restrictions via a realm string that is a prefix of an expected repository realm string.

    References: http://lists.fedoraproject.org/pipermail/package-announce/2016-May/184545.html, http://lists.opensuse.org/opensuse-updates/2016-05/msg00043.html, http://lists.opensuse.org/opensuse-updates/2016-05/msg00044.html, http://mail-archives.apache.org/mod_mbox/subversion-announce/201604.mbox/%3CCAP_GPNgJet+7_MAhomFVOXPgLtewcUw9w=k9zdPCkq5tvPxVMA%40mail.gmail.com%3E, http://mail-archives.apache.org/mod_mbox/subversion-announce/201604.mbox/%3CCAP_GPNgfn1iKueW51EpmXzXi_URNfGNofZSgOyW1_jnSeNm5DQ%40mail.gmail.com%3E, http://www.securityfocus.com/bid/89417, http://www.securitytracker.com/id/1035706, http://www.slackware.com/security/viewer.php?l=slackware-security&y=2016&m=slackware-security.417496, https://www.oracle.com/security-alerts/cpuoct2020.html, http://subversion.apache.org/security/CVE-2016-2167-advisory.txt, http://www.debian.org/security/2016/dsa-3561, https://security.gentoo.org/glsa/201610-05

    Affected packages

    Package

    Name:

    Purl:

    Affected ranges

    Type: GIT

    Events:

    Introduced- 0
    Fixed -None

    Affected versions

    1.9.0
    1.9.1
    1.9.2
    1.9.3

    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