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Category:   Application (Security)  >   Clam AntiVirus Vendors:   clamav.sourceforge.net
Clam AntiVirus Hash Processing Off-by-One Error Lets Remote Users Deny Service
SecurityTracker Alert ID:  1025858
SecurityTracker URL:  http://securitytracker.com/id/1025858
CVE Reference:   CVE-2011-2721   (Links to External Site)
Date:  Jul 28 2011
Impact:   Denial of service via network
Fix Available:  Yes  Vendor Confirmed:  Yes  
Version(s): 0.97; possibly other versions
Description:   A vulnerability was reported in Clam AntiVirus. A remote user can cause denial of service conditions.

A remote user can create a file containing a specially crafted hash signature that, when processed by Clam AntiVirus, will trigger an off-by-one error and cause the 'clamscan' antivirus service to crash.

Impact:   A remote user can cause the clamscan process to crash.
Solution:   The vendor has issued a source code fix, available at:

http://git.clamav.net/gitweb?p=clamav-devel.git;a=commit;h=4842733eb3f09be61caeed83778bb6679141dbc5

The vendor plans to include the fix in version 0.97.2.

The vendor's advisory is available at:

https://wwws.clamav.net/bugzilla/show_bug.cgi?id=2818

Vendor URL:  www.clamav.net/ (Links to External Site)
Cause:   Access control error
Underlying OS:  Linux (Any), UNIX (Any)

Message History:   None.


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