Stack-based buffer overflow in bookmark handling in Apple Safari 3 Beta before Update 3.0.3 on Windows allows user-assisted remote attackers to cause a denial of service (application crash) or execute arbitrary code via a bookmark with a long title.
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.