Multiple buffer overflows in pbm212030 allow remote attackers to cause a denial of service (crash) or possibly execute arbitrary code via a crafted PBM image, related to (1) stream line data, which triggers a heap-based buffer overflow, or (2) vectors related to an "internal intermediate heap-based buffer."
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.