Multiple stack-based buffer overflows in the phpcups PHP module for CUPS 1.1.23rc1 might allow context-dependent attackers to execute arbitrary code via vectors that result in long function parameters, as demonstrated by the cups_get_dest_options function in phpcups.c.
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.