[NEWS] HAURI Anti-Virus Directory Traversal

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  HAURI Anti-Virus Directory Traversal
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SUMMARY

A directory traversal vulnerability in various HAURI anti-virus products, 
can be exploited by malicious people to write files to arbitrary 
directories.

DETAILS

Vulnerable Systems:
 * ViRobot Expert version 4.0
 * ViRobot Advanced Server
 * ViRobot Linux Server version 2.0
 * HAURI LiveCall

The vulnerability is caused due to unsafe extraction of compressed 
archives (e.g. ACE, ARJ, CAB, LZH, RAR, TAR and ZIP) into a temporary 
directory before scanning. This can be exploited to write files into 
arbitrary directories when scanning a malicious archive containing files 
that have "/../" or "../../" directory sequences in their filenames.

Successful exploitation allows writing of files to arbitrary directories, 
which can potentially lead to code execution (e.g. by overwriting certain 
startup files), but requires that compressed file scanning is enabled.

Vendor Status:
The vendor has released a patch for ViRobot Linux Server 2.0:  
<http://www.globalhauri.com/html/download/down_unixpatch.html> 
http://www.globalhauri.com/html/download/down_unixpatch.html

The updated version of ViRobot Expert 4.0, ViRobot Advanced Server and 
LiveCall are available via online update but they are still vulnerable 
when scanning certain archive types.

Disclosure Timeline:
30/06/2005 - Initial vendor notification.
12/07/2005 - Second vendor notification.
14/07/2005 - Vendor response.
08/08/2005 - Received notification that VR Expert and VR Advanced Server 
has been fixed via online update.
09/08/2005 - Received notification that LiveCall has been fixed via online 
update.
11/08/2005 - Notified vendor that certain archive types are still 
affected.
17/08/2005 - Vendor released patch for VR Linux Server and disclosed 
vulnerability information.
19/08/2005 - 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/2005-24/advisory/> 
http://secunia.com/secunia_research/2005-24/advisory/



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