QuickTime in Apple Mac OS X 10.6.x before 10.6.5 accesses uninitialized memory locations during processing of JP2 image data, which allows remote attackers to execute arbitrary code or cause a denial of service (application crash) via a crafted JP2 file.
Improper Input Validation The product receives input or data, but it does
not validate or incorrectly validates that the input has the
properties that are required to process the data safely and
correctly.