Secunia Security Advisory - A vulnerability has been reported in Snort, which can be exploited by malicious people to bypass certain security restrictions.
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TITLE:
Snort Fragmented IP Packets TTL Security Bypass
SECUNIA ADVISORY ID:
SA30348
VERIFY ADVISORY:
http://secunia.com/advisories/30348/
CRITICAL:
Less critical
IMPACT:
Security Bypass
WHERE:
>From remote
SOFTWARE:
Snort 2.8.x
http://secunia.com/product/16919/
Snort 2.6.x
http://secunia.com/product/13116/
DESCRIPTION:
A vulnerability has been reported in Snort, which can be exploited by
malicious people to bypass certain security restrictions.
The vulnerability is caused due to an error in the processing of
fragmented IP packets. This can be exploited to bypass Snort rules by
sending fragmented IP packets with an overly large TTL (Time To Live)
difference between fragments.
The vulnerability is reported in versions 2.6 and 2.8. Prior versions
may also be affected.
SOLUTION:
Update to version 2.8.1.
PROVIDED AND/OR DISCOVERED BY:
Silvio Cesare, reported via iDefense
ORIGINAL ADVISORY:
iDefense:
http://labs.idefense.com/intelligence/vulnerabilities/display.php?id=701
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About:
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