Zero Day Initiative Advisory 12-057 - This vulnerability allows remote attackers to execute arbitrary code on vulnerable installations of Adobe Flash Player. User interaction is required to exploit this vulnerability in that the target must visit a malicious page or open a malicious file. The specific flaw exists within the way Flash Player handles the update of a NetStream object via the appendBytes method which can lead to a use-after-free condition when the function returns. This can result in remote code execution under the context of the current process.
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