[arch-security] [ASA-201608-22] mupdf: arbitrary code execution

[Levente Polyak]

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/index.php/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
==========

http://bugs.ghostscript.com/show_bug.cgi?id=696954
https://security-tracker.debian.org/tracker/CVE-2016-6525
http://git.ghostscript.com/?p=mupdf.git;a=commitdiff;h=39b0f07dd960f34e7e6bf230ffc3d87c41ef0f2e;hp=fa1936405b6a84e5c9bb440912c23d532772f958

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