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2007-07-20 - n.runs-SA-2007.016 - NOD32 Antivirus CAB parsing Arbitrary Code Execution Advisory



n.runs AG                                          
http://www.nruns.com/                                 security(at)nruns.com
n.runs-SA-2007.016                                           20-Jul-2007
________________________________________________________________________

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

________________________________________________________________________

Vendor communication:

  2007/05/07            Initial notification to ESET 
  2007/05/07            ESET Response
  2007/05/07            PoC files sent to ESET
  2007/05/10            ESET validate the vulnerability
  2007/05/24            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 Corruption through Race Condition in .CAB file parsing

Impact:

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.2.2289.

Solution:

The vulnerability was reported on May 07 and an update has been issued on May 
24 to solve this vulnerability through the regular update mechanism.

________________________________________________________________________

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

References: 
http://www.eset.com/joomla/index.php?option=com_content&task=view&id=3469&Itemid=26

This Advisory and Upcoming Advisories:
http://www.nruns.com/security_advisory.php
http://www.nruns.com/parsing-engines-advisories.php
________________________________________________________________________

Unaltered electronic reproduction of this advisory is permitted. For all other 
reproduction or publication, in printing or otherwise, contact 
security@xxxxxxxxx for permission. Use of the advisory constitutes acceptance 
for use in an "as is" condition. All warranties are excluded. 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. 

Copyright 2007 n.runs AG. All rights reserved. Terms of apply.