Gentoo: wpa_supplicant Buffer overflow vulnerability
Posted by Benjamin D. Thomas   
Gentoo wpa_supplicant contains a buffer overflow that could lead to a Denial of Service.
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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@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