CVE-2016-2167
Summary
| CVE | CVE-2016-2167 |
|---|---|
| State | PUBLISHED |
| Assigner | redhat |
| Source Priority | CVE Program / NVD first with legacy fallback |
| Published | 2016-05-05 18:59:00 UTC |
| Updated | 2026-05-06 22:30:45 UTC |
| 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. |
Risk And Classification
Primary CVSS: v3.0 6.8 MEDIUM from [email protected]
CVSS:3.0/AV:N/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:N
Problem Types: CWE-284 | n/a
| Version | Source | Type | Score | Severity | Vector |
|---|---|---|---|---|---|
| 3.0 | [email protected] | Primary | 6.8 | MEDIUM | CVSS:3.0/AV:N/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:N |
| 2.0 | [email protected] | Primary | 4.9 | AV:N/AC:M/Au:S/C:P/I:P/A:N |
CVSS v3.0 Breakdown
Attack Vector
NetworkAttack Complexity
HighPrivileges Required
LowUser Interaction
NoneScope
UnchangedConfidentiality
HighIntegrity
HighAvailability
NoneCVSS:3.0/AV:N/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:N
CVSS v2.0 Breakdown
Access Vector
NetworkAccess Complexity
MediumAuthentication
SingleConfidentiality
PartialIntegrity
PartialAvailability
NoneAV:N/AC:M/Au:S/C:P/I:P/A:N
NVD Known Affected Configurations (CPE 2.3)
| Type | Vendor | Product | Version | Update | Edition | Language |
|---|---|---|---|---|---|---|
| Application | Apache | Subversion | 1.9.0 | All | All | All |
| Application | Apache | Subversion | 1.9.1 | All | All | All |
| Application | Apache | Subversion | 1.9.2 | All | All | All |
| Application | Apache | Subversion | 1.9.3 | All | All | All |
| Application | Apache | Subversion | All | All | All | All |
Vendor Declared Affected Products
References
| Reference | Source | Link | Tags |
|---|---|---|---|
| Apache Subversion svnserve Flaw Lets Remote Authenticated Users Access Other Realms on the Target System - SecurityTracker | af854a3a-2127-422b-91ae-364da2661108 | www.securitytracker.com | |
| Debian -- Security Information -- DSA-3561-1 subversion | af854a3a-2127-422b-91ae-364da2661108 | www.debian.org | |
| [ANNOUNCE][SECURITY] Apache Subversion 1.9.4 released | af854a3a-2127-422b-91ae-364da2661108 | mail-archives.apache.org | |
| openSUSE-SU-2016:1264-1: moderate: Security update for subversion | af854a3a-2127-422b-91ae-364da2661108 | lists.opensuse.org | |
| subversion.apache.org/security/CVE-2016-2167-advisory.txt | af854a3a-2127-422b-91ae-364da2661108 | subversion.apache.org | Vendor Advisory |
| [ANNOUNCE][SECURITY] Apache Subversion 1.8.16 released | af854a3a-2127-422b-91ae-364da2661108 | mail-archives.apache.org | |
| openSUSE-SU-2016:1263-1: moderate: Security update for subversion | af854a3a-2127-422b-91ae-364da2661108 | lists.opensuse.org | |
| Oracle Critical Patch Update Advisory - October 2020 | af854a3a-2127-422b-91ae-364da2661108 | www.oracle.com | |
| The Slackware Linux Project: Slackware Security Advisories | af854a3a-2127-422b-91ae-364da2661108 | www.slackware.com | |
| [SECURITY] Fedora 24 Update: subversion-1.9.4-1.fc24 | af854a3a-2127-422b-91ae-364da2661108 | lists.fedoraproject.org | |
| Subversion, Serf: Multiple Vulnerabilities (GLSA 201610-05) — Gentoo Security | af854a3a-2127-422b-91ae-364da2661108 | security.gentoo.org | |
| Apache Subversion CVE-2016-2167 Authentication Bypass Vulnerability | af854a3a-2127-422b-91ae-364da2661108 | www.securityfocus.com | |
| [ANNOUNCE][SECURITY] Apache Subversion 1.8.16 released | MITRE | mail-archives.apache.org | |
| [ANNOUNCE][SECURITY] Apache Subversion 1.9.4 released | MITRE | mail-archives.apache.org | |
| CVE Program record | CVE.ORG | www.cve.org | canonical |
| NVD vulnerability detail | NVD | nvd.nist.gov | canonical, analysis |
No vendor comments have been submitted for this CVE.