GLSA-201810-04 : ImageMagick: Security hardening

Medium Nessus Plugin ID 117969

Synopsis

The remote Gentoo host is missing one or more security-related patches.

Description

The remote host is affected by the vulnerability described in GLSA-201810-04 (ImageMagick: Security hardening)

If you process an image with ImageMagick and don’t validate the file before (e.g. check magic byte), ImageMagick will call any coders found in the given file. So if ImageMagick will find Ghostscript for example, it will call Ghostscript.
Due to multiple -dSAFER sandbox bypass vulnerabilities in Ghostscript, this can lead to arbitrary code execution.
To mitigate this problem we install a policy.xml file by default which will disable PS, EPS, PDF, and XPS coders.
Impact :

A remote attacker, by enticing a user to process a specially crafted image file, could execute arbitrary code with the privileges of the process or cause a Denial of Service condition.
Workaround :

There is no known workaround at this time.

Solution

All ImageMagick 6 users should upgrade to the latest version:
# emerge --sync # emerge --ask --oneshot --verbose '>=media-gfx/imagemagick-6.9.10.10-r1' All ImageMagick 7 users should upgrade to the latest version:
# emerge --sync # emerge --ask --oneshot --verbose '>=media-gfx/imagemagick-7.0.8.10-r1'

See Also

https://security.gentoo.org/glsa/201810-04

Plugin Details

Severity: Medium

ID: 117969

File Name: gentoo_GLSA-201810-04.nasl

Version: 1.1

Type: local

Published: 2018/10/09

Modified: 2018/10/09

Dependencies: 12634

Risk Information

Risk Factor: Medium

Vulnerability Information

CPE: p-cpe:/a:gentoo:linux:imagemagick, cpe:/o:gentoo:linux

Required KB Items: Host/local_checks_enabled, Host/Gentoo/release, Host/Gentoo/qpkg-list

Patch Publication Date: 2018/10/06

Reference Information

CERT: 332928

GLSA: 201810-04