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Adobe Flash URLStream.readObject Use-After-Free

Posted by deepcore on April 1, 2016 – 8:53 am

There is a use-after-free in URLStream.readObject in Adobe Flash. If the object read is a registered class, the constructor will get invoked to create the object. If the constructor calls URLStream.close, the URLStream will get freed, and then the deserialization function will continue to write to it.


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