From: Raphael Marichez (falcogentoo.org)
Date: Sun Apr 22 2007 - 15:57:28 CDT

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Gentoo Linux Security Advisory GLSA 200704-16
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                                            http://security.gentoo.org/
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  Severity: High
     Title: Aircrack-ng: Remote execution of arbitrary code
      Date: April 22, 2007
      Bugs: #174340
        ID: 200704-16

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Synopsis
========

Aircrack-ng contains a buffer overflow that could lead to the remote
execution of arbitrary code with root privileges.

Background
==========

Aircrack-ng is an 802.11 WEP and WPA-PSK keys cracking program that can
recover keys once enough data packets have been captured.

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

    -------------------------------------------------------------------
     Package / Vulnerable / Unaffected
    -------------------------------------------------------------------
  1 net-wireless/aircrack-ng < 0.7-r2 >= 0.7-r2

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

Jonathan So reported that the airodump-ng module does not correctly
check the size of 802.11 authentication packets before copying them
into a buffer.

Impact
======

A remote attacker could trigger a stack-based buffer overflow by
sending a specially crafted 802.11 authentication packet to a user
running airodump-ng with the -w (--write) option. This could lead to
the remote execution of arbitrary code with the permissions of the user
running airodump-ng, which is typically the root user.

Workaround
==========

There is no known workaround at this time.

Resolution
==========

All Aircrack-ng users should upgrade to the latest version:

    # emerge --sync
    # emerge --ask --oneshot --verbose ">=net-wireless/aircrack-ng-0.7-r2"

References
==========

  [ 1 ] CVE-2007-2057
        http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2007-2057

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

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

  http://security.gentoo.org/glsa/glsa-200704-16.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
securitygentoo.org or alternatively, you may file a bug at
http://bugs.gentoo.org.

License
=======

Copyright 2007 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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