pdf/pdf-write.c in Artifex MuPDF before 1.12.0 mishandles certain length changes when a repair operation occurs during a clean operation, which allows remote attackers to cause a denial of service (buffer overflow and application crash) or possibly have unspecified other impact via a crafted PDF document.
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://www.debian.org/security/2018/dsa-4334 | third party advisory vendor advisory |
| http://www.ghostscript.com/cgi-bin/findgit.cgi?520cc26d18c9ee245b56e9e91f9d4fcae02be5f0 | third party advisory patch |
| https://bugs.ghostscript.com/show_bug.cgi?id=698699 | third party advisory permissions required |