full-disclosure - [PLSA 2008-40] Postfix: Denial of Service

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Date: Sat, 06 Sep 2008 04:12:34 +0300
From: Pınar Yanardağ <pinar@...dus.org.tr>
To: stable@...dus.org.tr
Cc: full-disclosure@...ts.grok.org.uk
Subject: [PLSA 2008-40] Postfix: Denial of Service

------------------------------------------------------------------------
Pardus Linux Security Advisory 2008-40            security@...dus.org.tr
------------------------------------------------------------------------
       Date: 2008-09-06
   Severity: 1
       Type: Local
------------------------------------------------------------------------

Summary
=======

A security issue has been reported in Postfix, which can be exploited by
malicious, local users to cause a DoS (Denial of Service).

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

The security issue is caused due to  Postfix  leaking  the  epoll  file
descriptor when executing non-Postfix commands, which can be  exploited
to cause a DoS.

The security issue only affects Postfix 2.4 or later in combination with
epoll (e.g. Linux 2.6).

Affected packages:

   Pardus 2008:
     postfix, all before 2.5.4-21-5

Resolution
==========

There are update(s) for postfix. You can update them via Package Manager
or with a single command from console:

     pisi up postfix

References
==========

   * http://bugs.pardus.org.tr/show_bug.cgi?id=8114
   * http://www.postfix.org/announcements/20080902.html
   * http://secunia.com/advisories/31716/

------------------------------------------------------------------------

-- 
Pınar Yanardağ
Pardus Security Team
http://security.pardus.org.tr

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