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Secunia Research: NOD32 Anti-Virus ARJ Archive Handling Buffer Overflow



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                     Secunia Research 08/09/2005

      - NOD32 Anti-Virus ARJ Archive Handling Buffer Overflow -

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Table of Contents

Affected Software....................................................1
Severity.............................................................2
Description of Vulnerability.........................................3
Solution.............................................................4
Time Table...........................................................5
Credits..............................................................6
References...........................................................7
About Secunia........................................................8
Verification.........................................................9

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1) Affected Software 

NOD32 for Windows NT/2000/2003/XP Trial Version 2.5 
(with nod32.002 version 1.033 build 1127)

Other versions may also be affected.

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2) Severity 

Rating: Highly Critical
Impact: System access
Where:  Remote

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3) Description of Vulnerability

Secunia Research has discovered a vulnerability in NOD32 Anti-Virus, 
which potentially can be exploited by malicious people to compromise
a vulnerable system.

The vulnerability is caused due to an error in handling ARJ archives
containing compressed files with overly long filename. This can be
exploited to cause a heap-based buffer overflow when a specially
crafted ARJ archive is scanned.

Successful exploitation may allow arbitrary code execution, but 
requires that archive scanning is enabled.

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4) Solution 

Update to the latest version via online update.
(nod32.002 version 1.034 build 1132).

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5) Time Table 

29/08/2005 - Initial vendor notification.
30/08/2005 - Initial vendor reply.
02/09/2005 - Fixed version available via online update.
08/09/2005 - Public disclosure.

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6) Credits 

Discovered by Tan Chew Keong, Secunia Research.

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7) References

No references available.

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8) About Secunia 

Secunia collects, validates, assesses, and writes advisories regarding 
all the latest software vulnerabilities disclosed to the public. These 
advisories are gathered in a publicly available database at the 
Secunia website: 

http://secunia.com/

Secunia offers services to our customers enabling them to receive all 
relevant vulnerability information to their specific system 
configuration. 

Secunia offers a FREE mailing list called Secunia Security Advisories: 

http://secunia.com/secunia_security_advisories/

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9) Verification 

Please verify this advisory by visiting the Secunia website:
http://secunia.com/secunia_research/2005-40/advisory/

Complete list of vulnerability reports published by Secunia Research:
http://secunia.com/secunia_research/

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