full-disclosure - [ GLSA 200406-06 ] CVS: additional DoS and arbitrary code execution vulnerabilities

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From: klieber at gentoo.org (Kurt Lieber)
Subject: [ GLSA 200406-06 ] CVS: additional DoS and arbitrary code execution vulnerabilities

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Gentoo Linux Security Advisory                           GLSA 200406-06
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                                            http://security.gentoo.org/
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  Severity: High
     Title: CVS: additional DoS and arbitrary code execution
            vulnerabilities
      Date: June 10, 2004
      Bugs: #53408
        ID: 200406-06

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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
    -------------------------------------------------------------------
  1  dev-util/cvs      <= 1.11.16-r1                        >= 1.11.17

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
==========

  [ 1 ] E-matters Advisory 09/2004
        http://security.e-matters.de/advisories/092004.html
  [ 2 ] CAN-2004-0414
        http://cve.mitre.org/cgi-bin/cvename.cgi?name=CAN-2004-0414
  [ 3 ] CAN-2004-0416
        http://cve.mitre.org/cgi-bin/cvename.cgi?name=CAN-2004-0416
  [ 4 ] CAN-2004-0417
        http://cve.mitre.org/cgi-bin/cvename.cgi?name=CAN-2004-0417
  [ 5 ] CAN-2004-0418
        http://cve.mitre.org/cgi-bin/cvename.cgi?name=CAN-2004-0418

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@...too.org or alternatively, you may file a bug at
http://bugs.gentoo.org.

License
=======

Copyright 2004 Gentoo Technologies, Inc; referenced text
belongs to its owner(s).

The contents of this document are licensed under the
Creative Commons - Attribution / Share Alike license.

http://creativecommons.org/licenses/by-sa/1.0
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