Artifex MuPDF 1.11 allows attackers to execute arbitrary code or cause a denial of service via a crafted .xps file, related to a "User Mode Write AV near NULL starting at wow64!Wow64NotifyDebugger+0x000000000000001d" on Windows. This occurs because read_zip_dir_imp in fitz/unzip.c does not check whether size fields in a ZIP entry are negative numbers.
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 |
|---|---|
| http://www.debian.org/security/2017/dsa-4006 | vendor advisory |
| http://git.ghostscript.com/?p=mupdf.git%3Bh=0f0fbc07d9be31f5e83ec5328d7311fdfd8328b1 | |
| https://bugs.ghostscript.com/show_bug.cgi?id=698540 | third party advisory exploit |
| https://github.com/wlinzi/security_advisories/tree/master/CVE-2017-14686 | third party advisory |