[Full-Disclosure] [ GLSA 200502-22 ] wpa_supplicant: Buffer overflow vulnerability

[Matthias Geerdsen]

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Gentoo Linux Security Advisory                           GLSA 200502-22
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                                            http://security.gentoo.org/
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  Severity: Normal
     Title: wpa_supplicant: Buffer overflow vulnerability
      Date: February 16, 2005
      Bugs: #81993
        ID: 200502-22

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Synopsis
========

wpa_supplicant contains a buffer overflow that could lead to a Denial
of Service.

Background
==========

wpa_supplicant is a WPA Supplicant with support for WPA and WPA2 (IEEE
802.11i / RSN).

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

    -------------------------------------------------------------------
     Package                      /  Vulnerable  /          Unaffected
    -------------------------------------------------------------------
  1  net-wireless/wpa_supplicant       < 0.2.7                >= 0.2.7

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

wpa_supplicant contains a possible buffer overflow due to the lacking
validation of received EAPOL-Key frames.

Impact
======

An attacker could cause the crash of wpa_supplicant using a specially
crafted packet.

Workaround
==========

There is no known workaround at this time.

Resolution
==========

All wpa_supplicant users should upgrade to the latest version:

    # emerge --sync
    # emerge --ask --oneshot --verbose ">=net-wireless/wpa_supplicant-0.2.7"

References
==========

  [ 1 ] wpa_supplicant Announcement
        http://lists.shmoo.com/pipermail/hostap/2005-February/009465.html

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

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

  http://security.gentoo.org/glsa/glsa-200502-22.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 at 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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