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             AUSCERT External Security Bulletin Redistribution

                       ESB-2007.1058 -- [UNIX/Linux]
     Denial of Service vulnerability has been discovered in Syslog-ng
                             31 December 2007

===========================================================================

        AusCERT Security Bulletin Summary
        ---------------------------------

Product:              syslog-ng
Publisher:            Gentoo
Operating System:     UNIX variants (UNIX, Linux, OSX)
Impact:               Denial of Service
Access:               Remote/Unauthenticated
CVE Names:            CVE-2007-6437

Original Bulletin:    http://security.gentoo.org/glsa/glsa-200712-19.xml

Comment: This advisory references vulnerabilities in products which run on
         platforms other than Gentoo. It is recommended that administrators
         running syslog-ng check for an updated version of the software for
         their operating system.

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Gentoo Linux Security Advisory                           GLSA 200712-19
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                                            http://security.gentoo.org/
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  Severity: Normal
     Title: Syslog-ng: Denial of Service
      Date: December 29, 2007
      Bugs: #202718
        ID: 200712-19

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Synopsis
========

A Denial of Service vulnerability has been discovered in Syslog-ng.

Background
==========

Syslog-ng is a flexible and scalable system logger.

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

    -------------------------------------------------------------------
     Package              /  Vulnerable  /                  Unaffected
    -------------------------------------------------------------------
  1  app-admin/syslog-ng       < 2.0.6                        >= 2.0.6

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

Oriol Carreras reported a NULL pointer dereference in the
log_msg_parse() function when processing timestamps without a
terminating whitespace character.

Impact
======

A remote attacker could send a specially crafted event to a vulnerable
Syslog-ng server, resulting in a crash.

Workaround
==========

There is no known workaround at this time.

Resolution
==========

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

    # emerge --sync
    # emerge --ask --oneshot --verbose ">=app-admin/syslog-ng-2.0.6"

References
==========

  [ 1 ] CVE-2007-6437
        http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2007-6437

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

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

  http://security.gentoo.org/glsa/glsa-200712-19.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 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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