Heap-based buffer overflow in the QuickTime VR extension 7.2.0.240 in QuickTime.qts in Apple QuickTime before 7.3 allows remote attackers to execute arbitrary code via a QTVR (QuickTime Virtual Reality) movie file containing a large size field in the atom header of a panorama sample atom.
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.