From: Mohacsi Janos (mohacsiniif.hu)
Date: Wed Feb 06 2008 - 14:54:48 CST

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TITLE:
KAME Project "ipcomp6_input()" Denial of Service

CRITICAL:
Moderately critical

IMPACT:
DoS

WHERE:
>From remote

DESCRIPTION:
A vulnerability has been reported in the KAME Project, which can be
exploited by malicious people to cause a DoS (Denial of Service).

The vulnerability is caused due to an error within the
"ipcomp6_input()" function in kame/sys/netinet6/ipcomp_input.c when
processing IPv6 packets with an IPComp header. This can be exploited
to crash a vulnerable system by sending a specially crafted IPv6
packet.

SOLUTION:
Fixed in the CVS repository.
http://www.kame.net/dev/cvsweb2.cgi/kame/kame/sys/netinet6/ipcomp_input.c.diff?r1=1.36;r2=1.37

PROVIDED AND/OR DISCOVERED BY:
US-CERT credits Shoichi Sakane.
NetBSD credits the Coverity Prevent analysis tool.

ORIGINAL ADVISORY:
US-CERT VU#110947:
http://www.kb.cert.org/vuls/id/110947

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