Full Disclosure: [ GLSA 200805-05 ] Wireshark: Denial of Service

[Pierre-Yves Rofes <py () gentoo org>]

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Gentoo Linux Security Advisory                           GLSA 200805-05
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                                            http://security.gentoo.org/
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  Severity: Normal
     Title: Wireshark: Denial of Service
      Date: May 07, 2008
      Bugs: #215276
        ID: 200805-05

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Synopsis
========

Multiple Denial of Service vulnerabilities have been discovered in
Wireshark.

Background
==========

Wireshark is a network protocol analyzer with a graphical front-end.

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

    -------------------------------------------------------------------
     Package                 /  Vulnerable  /               Unaffected
    -------------------------------------------------------------------
  1  net-analyzer/wireshark       < 1.0.0                     >= 1.0.0

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

Errors exist in:

* the X.509sat dissector because of an uninitialized variable and the
  Roofnet dissector because a NULL pointer may be passed to the
  g_vsnprintf() function (CVE-2008-1561).

* the LDAP dissector because a NULL pointer may be passed to the
  ep_strdup_printf() function (CVE-2008-1562).

* the SCCP dissector because it does not reset a pointer once the
  packet has been processed (CVE-2008-1563).

Impact
======

A remote attacker could exploit these vulnerabilities by sending a
malformed packet or enticing a user to read a malformed packet trace
file, causing a Denial of Service.

Workaround
==========

Disable the X.509sat, Roofnet, LDAP, and SCCP dissectors.

Resolution
==========

All Wireshark users should upgrade to the latest version:

    # emerge --sync
    # emerge --ask --oneshot --verbose ">=net-analyzer/wireshark-1.0.0"

References
==========

  [ 1 ] CVE-2008-1561
        http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2008-1561
  [ 2 ] CVE-2008-1562
        http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2008-1562
  [ 3 ] CVE-2008-1563
        http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2008-1563

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

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

  http://security.gentoo.org/glsa/glsa-200805-05.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 2008 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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