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2004: 3,100 advisories published
2005: 4,600 advisories published
2006: 5,300 advisories published

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TITLE:
Stonesoft StoneGate IPS HTTP Unicode Encoding Detection Bypass

SECUNIA ADVISORY ID:
SA27455

VERIFY ADVISORY:
http://secunia.com/advisories/27455/

CRITICAL:
Less critical

IMPACT:
Security Bypass

WHERE:
>From remote

OPERATING SYSTEM:
Stonesoft StoneGate IPS 4.x
http://secunia.com/product/16421/

DESCRIPTION:
A vulnerability has been reported in Stonesoft StoneGate IPS, which
can be exploited by malicious people to bypass certain security
restrictions.

The vulnerability is caused due to an error in the handling of
full-width and half-width unicode encoded HTTP traffic. This can be
exploited to bypass content scanning and evade detection by the IPS.

The vulnerability is reported in versions prior to 4.0.

SOLUTION:
Update to version 4.0 or later.
https://my.stonesoft.com/download.do

PROVIDED AND/OR DISCOVERED BY:
Fatih Ozavci and Caglar Cakici, GamaSEC

ORIGINAL ADVISORY:
GamaSEC:
http://www.gamasec.net/english/gs07-01.html

OTHER REFERENCES:
US-CERT VU#739224:
http://www.kb.cert.org/vuls/id/739224

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