CVE-2017-5991

Severity: high (CVSS 7.5 v3.1)
Exploited in the wild: not listed in CISA KEV
EPSS: 15.2% probability of exploitation in the next 30 days
Public exploit or detection template: yes
Published: 2017-02-15 · updated 2026-06-17
Weakness: CWE-476

Description

An issue was discovered in Artifex MuPDF before 1912de5f08e90af1d9d0a9791f58ba3afdb9d465. The pdf_run_xobject function in pdf-op-run.c encounters a NULL pointer dereference during a Fitz fz_paint_pixmap_with_mask painting operation. Versions 1.11 and later are unaffected.

Affected products

Artifex MuPDF: before 1.11 — fixed in 1.11
Debian Linux: 8.0, 9.0

How to fix

Upgrade to a fixed version: Artifex MuPDF 1.11. Check the vendor advisory for mitigations.

References

http://git.ghostscript.com/?p=mupdf.git%3Bh=1912de5f08e90af1d9d0a9791f58ba3afdb9d465
http://www.debian.org/security/2017/dsa-3797
http://www.securityfocus.com/bid/96213
https://bugs.ghostscript.com/show_bug.cgi?id=697500
https://security.gentoo.org/glsa/201706-08
https://www.exploit-db.com/exploits/42138/
http://git.ghostscript.com/?p=mupdf.git%3Bh=1912de5f08e90af1d9d0a9791f58ba3afdb9d465
http://www.debian.org/security/2017/dsa-3797
http://www.securityfocus.com/bid/96213
https://bugs.ghostscript.com/show_bug.cgi?id=697500
https://security.gentoo.org/glsa/201706-08
https://www.exploit-db.com/exploits/42138/

Get alerted when CVE-2017-5991 or the next vulnerability affects your stack