[33459] in bugtraq
OpenBSD IPv6 remote kernel crash
daemon@ATHENA.MIT.EDU (Thor Larholm)
Fri Feb 6 01:27:44 2004
From: "Thor Larholm" <thor@pivx.com>
To: <bugtraq@securityfocus.com>
Date: Thu, 5 Feb 2004 14:30:35 -0800
Message-ID: <8B32EDC90D8F4E4AB40918883281874D271C29@pivxwin2k1.secnet.pivx.com>
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Georgi Guninski posted an advisory on his site about a remote crash in
the OpenBSD kernel caused by connecting with a small IPv6 MTU.
http://www.guninski.com/obsdmtu.html
The error was present in revision 1.81 of /src/sys/netinet6/ip6_output.c
and is fixed in revision 1.82 ( 2004/02/04 08:47:41 ), you can see the
colored diffs at
http://www.openbsd.org/cgi-bin/cvsweb/src/sys/netinet6/ip6_output.c.diff
?r1=text&tr1=1.81&r2=text&tr2=1.82&f=h
OpenBSD administrators should pull the revised code from CVS and
recompile their kernels.
Regards
Thor Larholm
Senior Security Researcher
PivX Solutions
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