Bugtraq: Re: Remote crash in tcpdump from OpenBSD

[Henning Brauer <hb-bugtraq () bsws de>]

On Sat, Dec 20, 2003 at 05:25:22PM +0100, Przemyslaw Frasunek wrote:
> > Description:
>       Sending a packet containg 0xff,0x02 bytes to port 1701/udp causes
>       a L2TP protocol parser in tcpdump to enter an infinite loop, eating
>       all available memory and then segfaulting.
>
>       This bug also affects tcpdump in -CURRENT.
> > How-To-Repeat:
>       tcpdump -i lo0 -n udp and dst port 1701 &
>       perl -e 'print "\xff\x02"' | nc -u localhost 1701
several developers including me cannot reproduce that on -current.

-- 
Henning Brauer, BS Web Services, http://bsws.de
hb () bsws de - henning () openbsd org
Unix is very simple, but it takes a genius to understand the simplicity.
(Dennis Ritchie)