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Home >> Browse Vulnerability Assessment Database >> Gentoo Local Security Checks >> [GLSA-200405-12] CVS heap overflow vulnerability

Vulnerability Assessment Details

[GLSA-200405-12] CVS heap overflow vulnerability

Vulnerability Assessment Summary
CVS heap overflow vulnerability

Detailed Explanation for this Vulnerability Assessment
The remote host is affected by the vulnerability described in GLSA-200405-12
(CVS heap overflow vulnerability)

Stefan Esser discovered a heap overflow in the CVS server, which can be
triggered by sending malicious "Entry" lines and manipulating the flags
related to that Entry. This vulnerability was proven to be exploitable.

Impact

A remote attacker can execute arbitrary code on the CVS server, with the
rights of the CVS server. By default, Gentoo uses the "cvs" user to run the
CVS server. In particular, this flaw permits a complete compromise of CVS
source repositories. If you're not running a server, then you are not
vulnerable.

Workaround

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

References:
http://security.e-matters.de/advisories/072004.html
http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2004-0396

Solution:
All users running a CVS server should upgrade to the latest stable version:
# emerge sync
# emerge -pv ">=dev-util/cvs-1.11.16"
# emerge ">=dev-util/cvs-1.11.16"

Network Security Threat Level: High

Networks Security ID:

Vulnerability Assessment Copyright: (C) 2005 Michel Arboi

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