[Dailydave] Fun with Linux (2.6.12 -> 2.6.15.2)

H D Moore hdm-daily-dave at digitaloffense.net
Tue Feb 7 12:39:36 EST 2006


A fun remote DoS was fixed today. The bug occurs when the kernel tries to 
respond to an ICMP packet and the ip_options_echo() function fails. 
So far, it seems like the two ways to trigger this are via record-route 
and timestamp IP options that have needaddr bit set and a truncated 
value. The easy fix is to block ICMP until you upgrade your kernels...

http://www.kernel.org/diff/diffview.cgi?file=%2Fpub%2Flinux%2Fkernel%2Fv2.6%2Fpatch-2.6.15.3.bz2;z=27

Add the recent FreeBSD SACK bug, the various Windows driver bugs, and some 
magic OS X 0day and you can keep your entire local network staring at 
crash dump screens indefinitely...

-HD


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