[SA22731] Linux Kernel Fragmented IPv6 Packet Filtering Bypass

Type securityvulns
Reporter Securityvulns
Modified 2006-11-08T00:00:00


TITLE: Linux Kernel Fragmented IPv6 Packet Filtering Bypass


VERIFY ADVISORY: http://secunia.com/advisories/22731/

CRITICAL: Moderately critical

IMPACT: Security Bypass

WHERE: >From remote

OPERATING SYSTEM: Linux Kernel 2.6.x http://secunia.com/product/2719/

DESCRIPTION: Some vulnerabilities have been reported in the Linux Kernel, which can be exploited by malicious people to bypass certain security restrictions.

The vulnerabilities are caused due to the incorrect processing of certain fragmented IPv6 packets. This can be exploited to bypass filtering rules by sending specially crafted packets.

SOLUTION: Fixed in the GIT repository. http://www.kernel.org/git/?p=linux/kernel/git/torvalds/linux-2.6.git;a=commit;h=51d8b1a65291a6956b79374b6adbbadc2263bcf6 http://www.kernel.org/git/?p=linux/kernel/git/torvalds/linux-2.6.git;a=commit;h=6d381634d213580d40d431e7664dfb45f641b884

PROVIDED AND/OR DISCOVERED BY: The vendor credits Marc Dowd, McAfee

ORIGINAL ADVISORY: http://www.kernel.org/git/?p=linux/kernel/git/torvalds/linux-2.6.git;a=commit;h=51d8b1a65291a6956b79374b6adbbadc2263bcf6 http://www.kernel.org/git/?p=linux/kernel/git/torvalds/linux-2.6.git;a=commit;h=6d381634d213580d40d431e7664dfb45f641b884

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