Apple QuickTime before 7.6.6 on Windows allows remote attackers to execute arbitrary code or cause a denial of service (memory corruption and application crash) via crafted color tables in a movie file, related to malformed MediaVideo data, a sample description atom (STSD), and a crafted length value.
The product performs operations on a memory buffer, but it reads from or writes to a memory location outside the buffer's intended boundary. This may result in read or write operations on unexpected memory locations that could be linked to other variables, data structures, or internal program data.