This module exploits a memory corruption vulnerability within Microsoft\'s HTML engine (mshtml). When parsing an HTML page containing a recursive CSS import, a C++ object is deleted and later reused. This leads to arbitrary code execution. This exploit utilizes a combination of heap spraying and the .NET 2.0 'mscorie.dll' module to bypass DEP and ASLR. This module does not opt-in to ASLR. As such, this module should be reliable on all Windows versions with .NET 2.0.50727 installed.
Windows
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/ms11_003_ie_css_import
msf exploit(ms11_003_ie_css_import) > show targets
...targets...
msf exploit(ms11_003_ie_css_import) > set TARGET < target-id >
msf exploit(ms11_003_ie_css_import) > show options
...show and set options...
msf exploit(ms11_003_ie_css_import) > exploit
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