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Thread: What about FreeBSD? - KAME Project "ipcomp6_input()" Denial of Service




What about FreeBSD? - KAME Project "ipcomp6_input()" Denial of Service
country flaguser name
Hungary
2008-02-06 14:54:48
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.ne
t/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.c
ert.org/vuls/id/110947

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Re: What about FreeBSD? - KAME Project "ipcomp6_input()" Denial of Service
user name
2008-02-06 15:51:32
MOHACSI JANOS <MOHACSINIIF.HU> WRITES:
> ORIGINAL ADVISORY:
> US-CERT VU#110947:
> HTTP://WWW.KB.CERT.ORG/VULS/ID/110947

AS FAR AS I CAN TELL, FREEBSD'S IPCOMP IMPLEMENTATION IS NOT
FROM KAME,
BUT FROM OPENBSD, WITH SIGNIFICANT LOCAL CHANGES.

DES
-- 
DAG-ERLING SMøRGRAV - DESDES.NO
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