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Gentoo Linux Security Advisory                           GLSA 200903-26
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  Severity: Normal
     Title: TMSNC: Execution of arbitrary code
      Date: March 12, 2009
      Bugs: #229157
        ID: 200903-26

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Synopsis
========

A buffer overflow in TMSNC might lead to the execution of arbitrary
code when processing an instant message.

Background
==========

TMSNC is a Textbased client for the MSN instant messaging protocol.

Affected packages
=================

    -------------------------------------------------------------------
     Package       /   Vulnerable   /                       Unaffected
    -------------------------------------------------------------------
  1  net-im/tmsnc      <= 0.3.2-r1                         Vulnerable!
    -------------------------------------------------------------------
     NOTE: Certain packages are still vulnerable. Users should migrate
           to another package if one is available or wait for the
           existing packages to be marked stable by their
           architecture maintainers.

Description
===========

Nico Golde reported a stack-based buffer overflow when processing a MSN
packet with a UBX command containing a large UBX payload length field.

Impact
======

A remote attacker could send a specially crafted message, possibly
resulting in the execution of arbitrary code.

Workaround
==========

There is no known workaround at this time.

Resolution
==========

Since TMSNC is no longer maintained, we recommend that users unmerge
the vulnerable package and switch to another console-based MSN client
such as CenterIM or Pebrot:

    # emerge --unmerge "net-im/tmsnc"

References
==========

  [ 1 ] CVE-2008-2828
        http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2008-2828

Availability
============

This GLSA and any updates to it are available for viewing at
the Gentoo Security Website:

  http://security.gentoo.org/glsa/glsa-200903-26.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
http://bugs.gentoo.org.

License
=======

Copyright 2009 Gentoo Foundation, 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/2.5

--

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