There is an Invalid memory access in gAtomicIncrement() located at GMutex.h in Xpdf 4.01. It can be triggered by sending a crafted pdf file to (for example) the pdftops binary. It allows an attacker to cause Denial of Service (Segmentation fault) or possibly have unspecified other impact.
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.
| Link | Tags |
|---|---|
| https://research.loginsoft.com/bugs/invalid-memory-access-in-gatomiccounter-gatomicincrement-xpdf-4-01/ | third party advisory exploit |
| https://forum.xpdfreader.com/viewtopic.php?f=3&t=41261 | third party advisory exploit |