GLSA 200406-06: CVS: additional DoS and arbitrary code execution vulnerabilities

http://security.gentoo.org/

Severity:	high
Title:	CVS: additional DoS and arbitrary code execution vulnerabilities
Date:	06/10/2004
Bugs:	#53408
ID:	200406-06

Synopsis

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

Background

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

Affected packages

Package	Vulnerable	Unaffected	Architecture(s)
dev-util/cvs	<= 1.11.16-r1	>= 1.11.17	All supported architectures

Description

A team audit of the CVS source code performed by Stefan Esser and Sebastian Krahmer resulted in the discovery of several remotely exploitable vulnerabilities including:

no-null-termination of "Entry" lines
error_prog_name "double-free()"
Argument integer overflow
serve_notify() out of bounds writes

Impact

An attacker could use these vulnerabilities to cause a Denial of Service or execute arbitrary code with the permissions of the user running cvs.

Workaround

There is no known workaround at this time. All users are advised to upgrade to the latest available version of CVS.

Resolution

All CVS users should upgrade to the latest stable version:

    # emerge sync

    # emerge -pv ">=dev-util/cvs-1.11.17"
    # emerge ">=dev-util/cvs-1.11.17"

References

Availability

This GLSA and any updates to it are available for viewing at the Gentoo Security Website: http://security.gentoo.org/glsa/glsa-200406-06.xml

Concerns?

Security is a primary focus of Gentoo Linux and ensuring the confidentiality and security of our users machines is of utmost importance to us. Any security concerns should be addressed to security@gentoo.org or alternatively, you may file a bug at https://bugs.gentoo.org.