This vulnerability allows remote attackers to execute arbitrary code on vulnerable installations of Microsoft Windows. User interaction is required in that a target must visit a malicious page or open a malicious video file. The specific flaw exists within Microsoft's DirectShow module quartz.dll. While parsing QuickTime atoms the NumberOfEntries field is trusted and if modified can control the location of several pointers meant to track stream positions. Specifying values that are larger than the number of bytes left to process in the input file will cause corruption that can be leveraged to execute arbitrary code.
63699f10ded4baea05b6d22025aff16e90a70009c6170c57200531cecbb94d0fZero Day Initiative Advisory 09-045 - This vulnerability allows remote attackers to execute arbitrary code on vulnerable installations of Microsoft Windows. User interaction is required in that a target must visit a malicious page or open a malicious video file. The specific flaw exists within the parsing of the length records of certain QuickTime atoms. The application implicitly trusts the length during a transformation which will lead to memory corruption and can be leveraged to execute arbitrary code under the context of the current user.
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