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TITLE:
Sophos Anti-Virus Products CAB Archive Processing Vulnerability

SECUNIA ADVISORY ID:
SA33177

VERIFY ADVISORY:
http://secunia.com/advisories/33177/

CRITICAL:
Moderately critical

IMPACT:
DoS, System access

WHERE:
>From remote

SOFTWARE:
Sophos Anti-Virus 4.x
http://secunia.com/advisories/product/5391/
Sophos Anti-Virus 5.x
http://secunia.com/advisories/product/5390/
Sophos Anti-Virus 7.x
http://secunia.com/advisories/product/15621/
Sophos Anti-Virus Small Business Edition
http://secunia.com/advisories/product/9822/
Sophos Anti-Virus Small Business Edition 2.x
http://secunia.com/advisories/product/14829/
Sophos PureMessage for UNIX 5.x
http://secunia.com/advisories/product/5622/
Sophos PureMessage for UNIX 4.x
http://secunia.com/advisories/product/3876/
Sophos PureMessage Small Business Edition 2.x
http://secunia.com/advisories/product/9823/
Sophos MailMonitor for Notes/Domino
http://secunia.com/advisories/product/5624/
Sophos MailMonitor for SMTP
http://secunia.com/advisories/product/165/

DESCRIPTION:
A vulnerability has been reported in various Sophos Anti-Virus
products, which can be exploited by malicious people to cause a DoS
(Denial of Service) or potentially compromise a vulnerable system.

The vulnerability is caused due to an unspecified error when
processing certain malformed CAB archives. This can be exploited to
crash the application and may allow the execution of arbitrary code.

Successful exploitation requires that CAB archive scanning is enabled
(disabled by default).

SOLUTION:
Fixed in the Sophos virus engine 2.82.1.

EM Library and Sophos small business customers should receive
automatic updates.

PROVIDED AND/OR DISCOVERED BY:
Jonathan Brossard, iViZ Techno Solutions Pvt. Ltd.

The vendor also credits Oulu University Secure Programming Group.

ORIGINAL ADVISORY:
Sophos:
http://www.sophos.com/support/knowledgebase/article/50611.html

Oulu University Secure Programming Group:
http://www.cert.fi/haavoittuvuudet/joint-advisory-archive-formats.html

iViZ:
http://www.ivizsecurity.com/security-advisory-iviz-sr-08015.html

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