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TITLE:
FreeBSD IPv6 Type 0 Route Headers Denial of Service

SECUNIA ADVISORY ID:
SA25033

VERIFY ADVISORY:
http://secunia.com/advisories/25033/

CRITICAL:
Moderately critical

IMPACT:
DoS

WHERE:
>From remote

OPERATING SYSTEM:
FreeBSD 5.x
http://secunia.com/product/1132/
FreeBSD 6.x
http://secunia.com/product/6778/

DESCRIPTION:
A security issue has been reported in FreeBSD, which can be exploited
by malicious people to cause a DoS (Denial of Service).

The security issue is caused due to an error within the processing of
packets with IPv6 type 0 route headers. This can be exploited to cause
a DoS due to high network traffic by sending specially crafted IPv6
packets to vulnerable systems.

SOLUTION:
Update FreeBSD or apply patches.

2007-04-24 11:42:42 UTC (RELENG_6, 6.2-STABLE)
2007-04-26 23:42:23 UTC (RELENG_6_2, 6.2-RELEASE-p4)
2007-04-26 23:41:59 UTC (RELENG_6_1, 6.1-RELEASE-p16)
2007-04-24 11:44:23 UTC (RELENG_5, 5.5-STABLE)
2007-04-26 23:41:27 UTC (RELENG_5_5, 5.5-RELEASE-p12)

Patches (FreeBSD 5.5, 6.1, and 6.2):
http://security.FreeBSD.org/patches/SA-07:03/ipv6.patch
http://security.FreeBSD.org/patches/SA-07:03/ipv6.patch.asc

PROVIDED AND/OR DISCOVERED BY:
Philippe Biondi and Arnaud Ebalard

ORIGINAL ADVISORY:
FreeBSD:
http://security.freebsd.org/advisories/FreeBSD-SA-07:03.ipv6.asc

http://www.secdev.org/conf/IPv6_RH_security-csw07.pdf

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