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Microsoft Windows win32k.sys Memory Corruption Vulnerability

21
Dec
2011

A vulnerability has been discovered in Microsoft Windows, which can be exploited by malicious people to potentially compromise a user’s system.

The vulnerability is caused due to an error in win32k.sys and can be exploited to corrupt memory via e.g. a specially crafted web page containing an IFRAME with an overly large “height” attribute viewed using the Apple Safari browser and causes a BSoD.

Successful exploitation may allow execution of arbitrary code with kernel-mode privileges.

The vulnerability is confirmed on a fully patched Windows 7 Professional 64-bit. Other versions may also be affected.

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