[NT] AVIRA Antivirus ACE Archive Handling Buffer Overflow

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  AVIRA Antivirus ACE Archive Handling Buffer Overflow
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SUMMARY

Secunia Research has discovered a vulnerability in AVIRA Desktop for 
Windows antivirus, which can be exploited by malicious people to 
compromise a vulnerable system.

DETAILS

Vulnerable Systems:
 * AVIRA Desktop for Windows version 1.00.00.68 with AVPACK32.DLL version 
6.31.0.3

Immune Systems:
 * AVIRA Desktop for Windows version 1.00.00.68 with AVPACK32.DLL version 
6.31.1.7

The vulnerability is caused due to a boundary error when reading the 
filename of a compressed file from an ACE archive. This can be exploited 
to cause a stack-based buffer overflow when an ACE archive containing a 
compressed file with an overly long filename is scanned.

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

Vendor response:
The vendor has issue the following statement:  
<http://www.avira.com/en/news/avira_desktop_for_windows_patched_against_vulnerability.html>
 AVIRA Desktop for Windows patched against vulnerability

Disclosure Timeline:
05/09/2005 - Initial vendor notification
05/09/2005 - Initial vendor reply
06/09/2005 - Vendor provides updated version for testing
14/09/2005 - Public disclosure


ADDITIONAL INFORMATION

The information has been provided by  <mailto:vuln@xxxxxxxxxxx> Secunia 
Research.
The original article can be found at:  
<http://secunia.com/secunia_research/2005-43/advisory/> 
http://secunia.com/secunia_research/2005-43/advisory/



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