CVE-2016-2167

MEDIUM

Apache Subversion < 1.8.15 - Improper Access Control

Title source: rule

Description

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 (12)

[Mailing List] http://lists.opensuse.org/opensuse-updates/2016-05/msg00043.html

[Mailing List] http://lists.opensuse.org/opensuse-updates/2016-05/msg00044.html

[Various Sources] http://mail-archives.apache.org/mod_mbox/subversion-announce/201604.mbox/%3CCAP_GPNgJet+7_MAhomFVOXPgLtewcUw9w=k9zdPCkq5tvPxVMA%40mail.gmail.com%3E

[Various Sources] http://mail-archives.apache.org/mod_mbox/subversion-announce/201604.mbox/%3CCAP_GPNgfn1iKueW51EpmXzXi_URNfGNofZSgOyW1_jnSeNm5DQ%40mail.gmail.com%3E

[Vendor Advisory] http://subversion.apache.org/security/CVE-2016-2167-advisory.txt

[Third Party Advisory, VDB Entry] http://www.securitytracker.com/id/1035706

[Vendor Advisory] http://www.slackware.com/security/viewer.php?l=slackware-security&y=2016&m=slackware-security.417496

[Vendor Advisory] https://www.oracle.com/security-alerts/cpuoct2020.html

[Third Party Advisory, VDB Entry] http://www.securityfocus.com/bid/89417

[Mailing List, Third Party Advisory] http://lists.fedoraproject.org/pipermail/package-announce/2016-May/184545.html

[Third Party Advisory] http://www.debian.org/security/2016/dsa-3561

[Third Party Advisory] https://security.gentoo.org/glsa/201610-05

Scores

CVSS v3 6.8

EPSS 0.0120

EPSS Percentile 78.7%

Attack Vector NETWORK

CVSS:3.0/AV:N/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:N

Classification

CWE

CWE-284

Status draft

Affected Products (5)

apache/subversion < 1.8.15

apache/subversion

apache/subversion

apache/subversion

apache/subversion

Timeline

Published May 05, 2016

Tracked Since Feb 18, 2026