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CVS: Multiple vulnerabilities


1.  Gentoo Linux Security Advisory

Version Information

Advisory Reference GLSA 200504-16 / CVS
Release Date April 18, 2005
Latest Revision April 22, 2005: 03
Impact high
Exploitable remote
Package Vulnerable versions Unaffected versions Architecture(s)
dev-util/cvs < 1.11.20 >= 1.11.20 All supported architectures

Related bugreports: #86476, #89579


Several serious vulnerabilities have been found in CVS, which may allow an attacker to remotely compromise a CVS server or cause a DoS.

2.  Impact Information


CVS (Concurrent Versions System) is an open-source network-transparent version control system. It contains both a client utility and a server.


Alen Zukich has discovered several serious security issues in CVS, including at least one buffer overflow (CAN-2005-0753), memory leaks and a NULL pointer dereferencing error. Furthermore when launching trigger scripts CVS includes a user controlled directory.


An attacker could exploit these vulnerabilities to cause a Denial of Service or execute arbitrary code with the permissions of the CVS pserver or the authenticated user (depending on the connection method used).

3.  Resolution Information


There is no known workaround at this time.


All CVS users should upgrade to the latest version:

Code Listing 3.1: Resolution

# emerge --sync
# emerge --ask --oneshot --verbose ">=dev-util/cvs-1.11.20"

4.  References


Page updated April 18, 2005

Summary: This is a Gentoo Linux Security Advisory

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