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Category:   Application (Generic)  >   Apache Subversion Vendors:   Apache Software Foundation, subversion.tigris.org
Apache Subversion svnserve Flaw Lets Remote Authenticated Users Access Other Realms on the Target System
SecurityTracker Alert ID:  1035706
SecurityTracker URL:  http://securitytracker.com/id/1035706
CVE Reference:   CVE-2016-2167   (Links to External Site)
Date:  Apr 29 2016
Impact:   User access via network
Fix Available:  Yes  Vendor Confirmed:  Yes  
Version(s): 1.5.0 - 1.8.15, 1.9.0 - 1.9.3
Description:   A vulnerability was reported in Apache Subversion. A remote authenticated user can gain access to the target realm.

A remote authenticated user can supply a specially crafted realm string to svnserve to trigger a flaw in the Cyrus SASL library and authenticate to a different realm. A specially crafted realm string that is a prefix of the target realm string.

mod_dav_svn is not affected.

Daniel Shahaf of Apache Infrastructure and James McCoy of Debian reported this vulnerability.

Impact:   A remote authenticated user can gain access to the target realm.
Solution:   The vendor has issued a fix (1.8.16, 1.9.4).

The vendor's advisory is available at:

http://subversion.apache.org/security/CVE-2016-2167-advisory.txt

Vendor URL:  subversion.apache.org/security/CVE-2016-2167-advisory.txt (Links to External Site)
Cause:   Access control error
Underlying OS:  Linux (Any), UNIX (Any), Windows (Any)

Message History:   This archive entry has one or more follow-up message(s) listed below.
Aug 11 2017 (Ubuntu Issues Fix) Apache Subversion svnserve Flaw Lets Remote Authenticated Users Access Other Realms on the Target System
Ubuntu has issued a fix for Ubuntu Linux 14.04 LTS, 16.04 LTS, and 17.04.
Oct 25 2017 (Ubuntu Issues Fix) Apache Subversion svnserve Flaw Lets Remote Authenticated Users Access Other Realms on the Target System
Ubuntu has issued a fix for Ubuntu Linux 12.04 ESM.



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