Multiple heap-based buffer overflows in QuickTime.qts in Apple QuickTime Player 7.0.3 and iTunes 6.0.1 (3) and earlier allow remote attackers to cause a denial of service (crash) and execute arbitrary code via a .mov file with (1) a Movie Resource atom with a large size value, or (2) an stsd atom with a modified Sample Description Table size value, and possibly other vectors involving media files. NOTE: item 1 was originally identified by CVE-2005-4127 for a pre-patch announcement, and item 2 was originally identified by CVE-2005-4128 for a pre-patch announcement.
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.