Gentoo: AWStats Remote code execution
Posted by Joseph Shakespeare   
Gentoo AWStats fails to validate certain input, which could lead to the remote execution of arbitrary code.
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Gentoo Linux Security Advisory                           GLSA 200501-36
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                                            http://security.gentoo.org/
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  Severity: High
     Title: AWStats: Remote code execution
      Date: January 25, 2005
      Bugs: #77963
        ID: 200501-36

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Synopsis
========

AWStats fails to validate certain input, which could lead to the remote
execution of arbitrary code.

Background
==========

AWStats is an advanced log file analyzer and statistics generator.

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

    -------------------------------------------------------------------
     Package          /  Vulnerable  /                      Unaffected
    -------------------------------------------------------------------
  1  net-www/awstats        < 6.3                               >= 6.3

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

When 'awstats.pl' is run as a CGI script, it fails to validate specific
inputs which are used in a Perl open() function call.

Impact
======

A remote attacker could supply AWStats malicious input, potentially
allowing the execution of arbitrary code with the rights of the web
server.

Workaround
==========

Making sure that AWStats does not run as a CGI script will avoid the
issue, but we recommend that users upgrade to the latest version, which
fixes these bugs.

Resolution
==========

All AWStats users should upgrade to the latest version:

    # emerge --sync
    # emerge --ask --oneshot --verbose ">=net-www/awstats-6.3"

References
==========

  [ 1 ] AWStats ChangeLog
        http://awstats.sourceforge.net/docs/awstats_changelog.txt
  [ 2 ] iDEFENSE Advisory
        http://www.idefense.com/application/poi/display?id=185

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

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

  http://security.gentoo.org/glsa/glsa-200501-36.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