[ GLSA 200508-01 ] Compress::Zlib: Buffer overflow

[Sune Kloppenborg Jeppesen <jaervosz () gentoo org>]

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Gentoo Linux Security Advisory                           GLSA 200508-01
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                                            http://security.gentoo.org/
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  Severity: High
     Title: Compress::Zlib: Buffer overflow
      Date: August 01, 2005
      Bugs: #100540
        ID: 200508-01

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Synopsis
========

Compress::Zlib is vulnerable to a buffer overflow which could
potentially lead to execution of arbitrary code.

Background
==========

The Compress::Zlib is a Perl module which provides an interface to the
zlib compression library.

Affected packages
=================

    -------------------------------------------------------------------
     Package                 /  Vulnerable  /               Unaffected
    -------------------------------------------------------------------
  1  dev-perl/Compress-Zlib       < 1.35                       >= 1.35

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

Compress::Zlib 1.34 contains a local vulnerable version of zlib, which
may lead to a buffer overflow.

Impact
======

By creating a specially crafted compressed data stream, attackers can
overwrite data structures for applications that use Compress::Zlib,
resulting in a Denial of Service and potentially arbitrary code
execution.

Workaround
==========

There is no known workaround at this time.

Resolution
==========

All Compress::Zlib users should upgrade to the latest version:

    # emerge --sync
    # emerge --ask --oneshot --verbose ">=dev-perl/Compress-Zlib-1.35"

References
==========

  [ 1 ] GLSA 200507-19
        http://www.gentoo.org/security/en/glsa/glsa-200507-19.xml
  [ 2 ] GLSA 200507-05
        http://www.gentoo.org/security/en/glsa/glsa-200507-05.xml
  [ 3 ] CAN-2005-1849
        http://www.cve.mitre.org/cgi-bin/cvename.cgi?name=CAN-2005-1849
  [ 4 ] CAN-2005-2096
        http://www.cve.mitre.org/cgi-bin/cvename.cgi?name=CAN-2005-2096

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

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

  http://security.gentoo.org/glsa/glsa-200508-01.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 2005 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/2.0

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