module

MS13-022 Microsoft Silverlight ScriptObject Unsafe Memory Access

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Disclosed
2013-03-12
Created
2018-05-30

Description

This module exploits a vulnerability in Microsoft Silverlight. The vulnerability exists on
the Initialize() method from System.Windows.Browser.ScriptObject, which access memory in an
unsafe manner. Since it is accessible for untrusted code (user controlled) it's possible
to dereference arbitrary memory which easily leverages to arbitrary code execution. In order
to bypass DEP/ASLR a second vulnerability is used, in the public WriteableBitmap class
from System.Windows.dll. This module has been tested successfully on IE6 - IE10, Windows XP
SP3 / Windows 7 SP1.

Authors

James Forshaw
Vitaliy Toropov
juan vazquez juan.vazquez@metasploit.com

Platform

Windows

Architectures

x86

References

Module Options

To display the available options, load the module within the Metasploit console and run the commands ‘show options’ or ‘show advanced’:


    msf > use exploit/windows/browser/ms13_022_silverlight_script_object
    msf exploit(ms13_022_silverlight_script_object) > show targets
        ...targets...
    msf exploit(ms13_022_silverlight_script_object) > set TARGET < target-id >
    msf exploit(ms13_022_silverlight_script_object) > show options
        ...show and set options...
    msf exploit(ms13_022_silverlight_script_object) > exploit
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