iDefense Security Advisory 05.11.10 - Remote exploitation of a heap memory indexing vulnerability in Adobe Systems Inc.'s Shockwave Player could allow an attacker to execute arbitrary code with the privileges of the current user. The vulnerability takes place during the processing of a certain malformed file. A function calculates an offset to be used within a memory mapped file and returns the offset value. The return value is not checked. This can lead to a condition where an attacker is able to overwrite memory outside the bounds of the allocated memory map. iDefense has confirmed the existence of this vulnerability in the latest version of Shockwave Player at the time of testing, version 11.5.6r606. Shockwave Player 11.5.6.606 and earlier versions for Windows and Macintosh are vulnerable.
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