[arch-security] [ASA-201711-2] libmupdf: arbitrary code execution

[Levente Polyak]

Arch Linux Security Advisory ASA-201711-2
=========================================

Severity: High
Date    : 2017-11-01
CVE-ID  : CVE-2017-14685 CVE-2017-14686 CVE-2017-14687 CVE-2017-15587
Package : libmupdf
Type    : arbitrary code execution
Remote  : No
Link    : https://security.archlinux.org/AVG-458

Summary
=======

The package libmupdf before version 1.11-5 is vulnerable to arbitrary
code execution.

Resolution
==========

Upgrade to 1.11-5.

# pacman -Syu "libmupdf>=1.11-5"

The problems have been fixed upstream but no release is available yet.

Workaround
==========

None.

Description
===========

- CVE-2017-14685 (arbitrary code execution)

Artifex MuPDF 1.11 allows attackers to cause a denial of service or
possibly have unspecified other impact via a crafted .xps file. This
occurs because xps_load_links_in_glyphs in xps/xps-link.c does not
verify that an xps font could be loaded.

- CVE-2017-14686 (arbitrary code execution)

Artifex MuPDF 1.11 allows attackers to execute arbitrary code or cause
a denial of service via a crafted .xps file. This occurs because
read_zip_dir_imp in fitz/unzip.c does not check whether size fields in
a ZIP entry are negative numbers.

- CVE-2017-14687 (arbitrary code execution)

Artifex MuPDF 1.11 allows attackers to cause a denial of service or
possibly have unspecified other impact via a crafted .xps file. This
occurs because of mishandling of XML tag name comparisons.

- CVE-2017-15587 (arbitrary code execution)

An integer overflow leading to an out-of-bounds wrte has been found in
mupdf <= 1.11. The parsing of a crafted PDF might allow an attacker to
write controlled data to an arbitrary location in memory when
performing truncated xref checks.

Impact
======

An attacker is able to execute arbitrary code on the affected host by
providing a maliciously-crafted .xps or .pdf file.

References
==========

http://git.ghostscript.com/?p=mupdf.git;a=commitdiff;h=ab1a420613dec93c686acbee2c165274e922f82a
https://bugs.ghostscript.com/show_bug.cgi?id=698539
http://git.ghostscript.com/?p=mupdf.git;a=commitdiff;h=0f0fbc07d9be31f5e83ec5328d7311fdfd8328b1
https://bugs.ghostscript.com/show_bug.cgi?id=698540
http://git.ghostscript.com/?p=mupdf.git;a=commitdiff;h=2b16dbd8f73269cb15ca61ece75cf8d2d196ed28
https://bugs.ghostscript.com/show_bug.cgi?id=698558
https://nandynarwhals.org/CVE-2017-15587/
http://git.ghostscript.com/?p=mupdf.git;a=commitdiff;h=82df2631d7d0446b206ea6b434ea609b6c28b0e8
https://security.archlinux.org/CVE-2017-14685
https://security.archlinux.org/CVE-2017-14686
https://security.archlinux.org/CVE-2017-14687
https://security.archlinux.org/CVE-2017-15587

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