National Vulnerability Database

National Vulnerability Database

National Vulnerability
Database

CVE-2016-2167 Detail

Current 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.

Source:  MITRE
View Analysis Description

Impact

CVSS v3.0 Severity and Metrics:

Base Score: 6.8 MEDIUM
Vector: AV:N/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:N (V3.0 legend)
Impact Score: 5.2
Exploitability Score: 1.6


Attack Vector (AV): Network
Attack Complexity (AC): High
Privileges Required (PR): Low
User Interaction (UI): None
Scope (S): Unchanged
Confidentiality (C): High
Integrity (I): High
Availability (A): None

CVSS v2.0 Severity and Metrics:

Base Score: 4.9 MEDIUM
Vector: (AV:N/AC:M/Au:S/C:P/I:P/A:N) (V2 legend)
Impact Subscore: 4.9
Exploitability Subscore: 6.8


Access Vector (AV): Network
Access Complexity (AC): Medium
Authentication (AU): Single
Confidentiality (C): Partial
Integrity (I): Partial
Availability (A): None
Additional Information:
Allows unauthorized disclosure of information
Allows unauthorized modification

References to Advisories, Solutions, and Tools

By selecting these links, you will be leaving NIST webspace. We have provided these links to other web sites because they may have information that would be of interest to you. No inferences should be drawn on account of other sites being referenced, or not, from this page. There may be other web sites that are more appropriate for your purpose. NIST does not necessarily endorse the views expressed, or concur with the facts presented on these sites. Further, NIST does not endorse any commercial products that may be mentioned on these sites. Please address comments about this page to nvd@nist.gov.

Hyperlink Resource
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_GPNgfn1iKueW51EpmXzXi_URNfGNofZSgOyW1_jnSeNm5DQ@mail.gmail.com%3E
http://mail-archives.apache.org/mod_mbox/subversion-announce/201604.mbox/%3CCAP_GPNgJet+7_MAhomFVOXPgLtewcUw9w=k9zdPCkq5tvPxVMA@mail.gmail.com%3E
http://subversion.apache.org/security/CVE-2016-2167-advisory.txt Vendor Advisory
http://www.debian.org/security/2016/dsa-3561
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://security.gentoo.org/glsa/201610-05

Technical Details

Vulnerability Type (View All)

  • Improper Access Control (CWE-284)

Known Affected Software Configurations Switch to CPE 2.2

Configuration 1 ( hide )
 cpe:2.3:a:apache:subversion:*:*:*:*:*:*:*:*
     Show Matching CPE(s)
Up to (including)
1.8.15
 cpe:2.3:a:apache:subversion:1.9.0:*:*:*:*:*:*:*
     Show Matching CPE(s)
 cpe:2.3:a:apache:subversion:1.9.1:*:*:*:*:*:*:*
     Show Matching CPE(s)
 cpe:2.3:a:apache:subversion:1.9.2:*:*:*:*:*:*:*
     Show Matching CPE(s)
 cpe:2.3:a:apache:subversion:1.9.3:*:*:*:*:*:*:*
     Show Matching CPE(s)


Change History

5 change records found - show changes

Quick Info

CVE Dictionary Entry:
CVE-2016-2167
NVD Published Date:
05/05/2016
NVD Last Modified:
06/30/2017