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TITLE:
Kaspersky Anti-Virus Engine UPX Processing Denial of Service

SECUNIA ADVISORY ID:
SA24391

VERIFY ADVISORY:
http://secunia.com/advisories/24391/

CRITICAL:
Moderately critical

IMPACT:
DoS

WHERE:
>From remote

SOFTWARE:
Kaspersky Anti-Virus 4.x
http://secunia.com/product/916/
Kaspersky Anti-Virus 5.x
http://secunia.com/product/2781/
Kaspersky Anti-Virus 6.x
http://secunia.com/product/10470/
Kaspersky Internet Security 6.x
http://secunia.com/product/10471/
Kaspersky Online Scanner 5.x
http://secunia.com/product/12705/
Kaspersky Personal Security Suite 1.x
http://secunia.com/product/5804/
Kaspersky SMTP Gateway 5.x
http://secunia.com/product/4100/

DESCRIPTION:
A vulnerability has been reported in Kaspersky's Anti-Virus engine,
which can be exploited by malicious people to cause a DoS (Denial of
Service).

The vulnerability is caused due to an error within the handling of
UPX-compressed executables that contain negative data offsets. This
can be exploited to cause the application to consume large amounts of
CPU resources, which can e.g. render a client-system unusable or
degrade the performance of a server.

The vulnerability is reported in version 6.0.1.411 for Windows and
5.5-10 for Linux. Other versions may also be affected.

SOLUTION:
The fix is reportedly available via automatic updates since February
7, 2007.

PROVIDED AND/OR DISCOVERED BY:
Discovered by an anonymous researcher and reported via iDefense Labs.

ORIGINAL ADVISORY:
iDefense Labs:
http://labs.idefense.com/intelligence/vulnerabilities/display.php?id=485

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About:
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Please Note:
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