CVE-2016-2167

MEDIUM

Apache Subversion < 1.8.16 and 1.9.x < 1.9.4 - Unauthenticated Authentication Bypass via Realm String Prefix

Title source: llm
STIX 2.1

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)

Core 12
Core References
Mailing List, Third Party Advisory vendor-advisory x_refsource_fedora
http://lists.fedoraproject.org/pipermail/package-announce/2016-May/184545.html
Third Party Advisory, VDB Entry vdb-entry x_refsource_bid
http://www.securityfocus.com/bid/89417
Mailing List vendor-advisory x_refsource_suse
http://lists.opensuse.org/opensuse-updates/2016-05/msg00044.html
Mailing List vendor-advisory x_refsource_suse
http://lists.opensuse.org/opensuse-updates/2016-05/msg00043.html
Third Party Advisory vendor-advisory x_refsource_debian
http://www.debian.org/security/2016/dsa-3561
Third Party Advisory, VDB Entry vdb-entry x_refsource_sectrack
http://www.securitytracker.com/id/1035706
Third Party Advisory vendor-advisory x_refsource_gentoo
https://security.gentoo.org/glsa/201610-05

Scores

CVSS v3 6.8
EPSS 0.0097
EPSS Percentile 76.8%
Attack Vector NETWORK
CVSS:3.0/AV:N/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:N

Details

CWE
CWE-284
Status published
Products (5)
apache/subversion 1.9.0
apache/subversion 1.9.1
apache/subversion 1.9.2
apache/subversion 1.9.3
apache/subversion < 1.8.15
Published May 05, 2016
Tracked Since Feb 18, 2026