full-disclosure - NOD32 Antivirus CAB parsing Arbitrary Code Execution Advisory

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Date: Thu, 21 Dec 2006 12:50:17 +0100
From: <security@...ns.com>
To: "'BugTraq'" <bugtraq@...urityfocus.com>,
	<full-disclosure@...ts.grok.org.uk>
Subject: NOD32 Antivirus CAB parsing Arbitrary Code
	Execution Advisory

n.runs AG					   
http://www.nruns.com/			               security at nruns.com
n.runs-SA-2006.005                                           21-Dec-2006
________________________________________________________________________

Vendor:	            ESET, http://eset.com
Affected Products:	ESET NOD32 Antivirus
Vulnerability:          Arbitrary Code Execution (remote) 
Risk:			      HIGH

________________________________________________________________________

Vendor communication:

  2006/08/24		initial notification of ESET 
  2006/08/28		ESET Response
  2006/08/29		PGP keys exchange
  2006/08/29		PoC files sent to ESET
  2006/09/06		ESET initial feedback.
  2006/09/08		ESET confirmed the bug and fixed
  2006/09/08		ESET made available the updates
________________________________________________________________________

Overview:

Founded in 1992, ESET is a global provider of security software for
enterprises and consumers. ESET's award-winning, antivirus software system,
NOD32, provides real-time protection from known and unknown viruses,
spyware, rootkits and other malware. NOD32 offers the smallest, fastest and
most advanced protection available, with more Virus Bulletin 100% Awards
than any other antivirus product. ESET was named to Deloitte's Technology
Fast 500 five years running, and has an extensive partner network, including
corporations like Canon, Dell and Microsoft. ESET has offices in Bratislava,
SK; Bristol, U.K.; Buenos Aires, AR; Prague, CZ; San Diego, USA; and is
represented worldwide in more than 100 countries. 
The broad product platform protects Windows, Linux, Novell and MS DOS
machines.

Description:
A remotely exploitable vulnerability has been found in the file parsing
engine.

In detail, the following flaw was determined:

- Heap Overflow through Integer Overflow in .CAB file parsing

This problem can lead to remote arbitrary code execution if an attacker
carefully crafts a file that exploits the aforementioned vulnerability. The
vulnerability is present in NOD32 Antivirus software versions prior to the
update v.1.1743.

Solution:
The vulnerability was reported on Aug 24 and an update has been issued on
Sep 08 to solve this vulnerability through the regular update mechanism.

________________________________________________________________________

Credit: 
Bugs found by Sergio Alvarez of n.runs AG. 
________________________________________________________________________

The information provided is released by n.runs "as is" without warranty of
any kind. n.runs except all warranties, either express or implied, expect
for the warranties of merchantability. In no event shall n.runs be liable
for any damages whatsoever including direct, indirect, incidental,
consequential, loss of business profits or special damages, even if n.runs
has been advised of the possibility of such damages.
Distribution or Reproduction of the information is provided that the
advisory is not modified in any way.

Copyright 2006 n.runs. All rights reserved. Terms of use.

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