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Category:   Networking Stack (TCP/IP)  >   KAME IPv6 Stack Vendors:   KAME Project
KAME IPv6 Stack Can Be Crashed By Remote Users Sending an IPv6 Packet Containing an IPComp Header
SecurityTracker Alert ID:  1019314
SecurityTracker URL:  http://securitytracker.com/id/1019314
CVE Reference:   CVE-2008-0177   (Links to External Site)
Updated:  Feb 27 2008
Original Entry Date:  Feb 7 2008
Impact:   Denial of service via network
Fix Available:  Yes  Vendor Confirmed:  Yes  

Description:   A vulnerability was reported in the KAME IPv6 Stack. A remote user can cause denial of service conditions.

A remote user can send an IPv6 packet with an IPComp header to cause the target service to crash.

Shoichi Sakane of the KAME project reported this vulnerability.

The original advisory is available at:

http://www.kb.cert.org/vuls/id/110947

Apple Mac OS X xnu is also affected. A demonstration exploit from mu-b of digit-labs.org is available at:

http://www.digit-labs.org/files/exploits/xnu-ipv6-ipcomp.c

Impact:   A remote user can cause the target system to crash.
Solution:   The vendor has issued a source code fix, available at:

http://www.kame.net/dev/cvsweb2.cgi/kame/kame/sys/netinet6/ipcomp_input.c.diff?r1=1.36;r2=1.37

Vendor URL:  www.kame.net/ (Links to External Site)
Cause:   State error
Underlying OS:  UNIX (BSD/OS), UNIX (FreeBSD), UNIX (NetBSD), UNIX (OpenBSD)

Message History:   This archive entry has one or more follow-up message(s) listed below.
Feb 14 2008 (FreeBSD Issues Fix) KAME IPv6 Stack Can Be Crashed By Remote Users Sending an IPv6 Packet Containing an IPComp Header
FreeBSD has released a fix for FreeBSD 5.5.
Feb 27 2008 (Apple Mac OS X is Affected) KAME IPv6 Stack Can Be Crashed By Remote Users Sending an IPv6 Packet Containing an IPComp Header
Apple Mac OS X is affected.
Feb 29 2008 (NetBSD Issues Fix) KAME IPv6 Stack Can Be Crashed By Remote Users Sending an IPv6 Packet Containing an IPComp Header
NetBSD has released a fix for NetBSD 2.0, 2.1, 3.0, and 3.1.



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