Arch Linux ASA-201608-22: Critical Mupdf Arbitrary Code Execution Risk

Arch Linux Security Advisory ASA-201608-22
=========================================
Severity: Critical
Date    : 2016-08-30
CVE-ID  : CVE-2016-6525
Package : mupdf
Type    : arbitrary code execution
Remote  : Yes
Link    : https://wiki.archlinux.org/title/CVE

Summary
======
The package mupdf before version 1.9a-5 is vulnerable to arbitrary code
execution.

Resolution
=========
Upgrade to 1.9a-5

# pacman -Syu "mupdf>=1.9a-5"

The fix has been backported from an upstream patch.

Workaround
=========
None.

Description
==========
Yu Hong and Zheng Jihong discovered a heap overflow vulnerability within
the pdf_load_mesh_params function, allowing an attacker to cause an
application crash (denial-of-service), or potentially to execute
arbitrary code with the privileges of the user running MuPDF, if a
specially crafted PDF file is processed.

Impact
=====
A remote attacker can execute arbitrary code or crash MuPDF by tricking
a user into opening a crafted pdf file.

References
=========
https://bugs.ghostscript.com/show_bug.cgi
https://security-tracker.debian.org/tracker/CVE-2016-6525