full-disclosure - TCP/IP Stack Vulnerability

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Message-ID: <53913.81.84.174.45.1113833018.squirrel@mail.revolutionsp.com>
Date: Mon Apr 18 15:04:58 2005
From: security at revolutionsp.com (H. S.)
Subject: TCP/IP Stack Vulnerability

I have tested this against an unpatched W2K server and a RH 6 box, it
doesnt slow down any of them; I was using X on the RH6 one and didn't
notice any slowdowns or the supposed packet flow this should generate.


> Fellows,
>
> Try this:
>
> Linux (Slackware 10):
>
> root@...fix:/# gcc -D LINUX storm.c -lpcap -o storm
>
> BSD systems:
>
> root@...fix:/# gcc storm.c -lpcap -o storm
>
> It should work, anyway Im sending a FreeBSD precompiled version of
> this exploit and a the C source code as an attachment.
>
> bash-2.05b$ uname -a
> FreeBSD darksun.undernet 5.3-RELEASE FreeBSD 5.3-RELEASE #1: Fri Dec
> 10 15:56:18 BRST 2004
> root@...ksun.undernet:/usr/obj/usr/src/sys/GENERIC  i386
>
> Best reguards,
>
> Diego Casati
>
>
> On 4/18/05, Israel Lopez <israel@...osting.com> wrote:
>> -----BEGIN PGP SIGNED MESSAGE-----
>> Hash: SHA1
>>
>> Hello,
>>
>> Call me crazy, but when I copied the text out from Mr. Casati's email, I
>> had to edit all of the line wraps that (I believed) Thunderbird injected
>> into the email.  Takes a bit but you'll find them.
>>
>> If anything I got 'farther' into compiling myself, needed to reflect
>> some changes to a new location of a pcap-bpf.h header.
>>
>> [~/sandbox]# gcc -DLINUX -lpcap storm.c -o storm
>> storm.c: In function `PCapHandler':
>> storm.c:450: warning: initialization from incompatible pointer type
>> /tmp/ccvPmT8m.o(.text+0x3e8): In function `TCPCheckSum':
>> : undefined reference to `sizephdr'
>> collect2: ld returned 1 exit status
>> [~/sandbox]#
>>
>> Anyone have sucess in testing this out in a sandbox environment?
>>
>>
>> Diego Casati wrote:
>> > Try this
>> >  root@...fix:~/vortex# gcc -DLINUX storm.c -lpcap -o storm
>> >
>> >
>> >
>> > On 4/17/05, H. S. <security@...olutionsp.com> wrote:
>> >
>> >>Hey,
>> >>
>> >>I am having two errors compiling this code. I want to test it on my
>> LAN,
>> >>as I have a windows box and several linux ones.
>> >>
>> >
>> >
>> >>gcc -lpcap tcp-ack.c -o storm
>> >>tcp-ack.c: In function `DeletePacket':
>> >>tcp-ack.c:350: error: syntax error before "CurrentPacket"
>> >>tcp-ack.c: In function `FindPacket':
>> >>tcp-ack.c:366: error: invalid lvalue in assignment
>> >>tcp-ack.c: In function `PCapHandler':
>> >>tcp-ack.c:453: warning: initialization from incompatible pointer type
>> >>
>> >>I'm trying to compile on a FreeBSD 5.2.1-RELEASE system.
>> >>
>> >>line 350 reads:
>> >>                       CurrentPacket->NextPacket
>> >>CurrentPacket->NextPacket->NextPacket;
>> >>
>> >>line 366 reads:
>> >>           if (Source == Packet->Source && Destination
>> >>=Packet->Destination && SourcePort == Packet->SourcePort &&
>> >>DestinationPort == Packet->DestinationPort)
>> >>
>> >>What could be the problem?
>> >>
>> >>Kind Regards
>> >>
>> >>
>> >
>> > _______________________________________________
>> > Full-Disclosure - We believe in it.
>> > Charter: http://lists.grok.org.uk/full-disclosure-charter.html
>> > Hosted and sponsored by Secunia - http://secunia.com/
>>
>> - --
>> ========================> Israel Lopez
>> Lead Network Administrator
>> OCHosting Inc.
>> Office: (949) 388-8637 x.106
>> E-Mail: israel@...osting.com
>> PGPKey: 0xFE8F03DD
>> Keyserver: pgp.mit.edu
>>
>> -----BEGIN PGP SIGNATURE-----
>> Version: GnuPG v1.4.1 (MingW32)
>>
>> iD8DBQFCYywQhrlQD/6PA90RAhbNAKCvtt2cM7siWN17q0mbl+bL4rCeKgCfe0en
>> TtecqDyAZNs4C1V8ldtsLoA> =u1sU
>> -----END PGP SIGNATURE-----
>>
> _______________________________________________
> Full-Disclosure - We believe in it.
> Charter: http://lists.grok.org.uk/full-disclosure-charter.html
> Hosted and sponsored by Secunia - http://secunia.com/