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CVE-2018-18023

Status Candidate

Overview

In ImageMagick 7.0.8-13 Q16, there is a heap-based buffer over-read in the SVGStripString function of coders/svg.c, which allows attackers to cause a denial of service via a crafted SVG image file.

Related Files

Ubuntu Security Notice USN-4034-1
Posted Jun 25, 2019
Authored by Ubuntu | Site security.ubuntu.com

Ubuntu Security Notice 4034-1 - It was discovered that ImageMagick incorrectly handled certain malformed image files. If a user or automated system using ImageMagick were tricked into opening a specially crafted image, an attacker could exploit this to cause a denial of service or possibly execute code with the privileges of the user invoking the program. Due to a large number of issues discovered in GhostScript that prevent it from being used by ImageMagick safely, the update for Ubuntu 18.10 and Ubuntu 19.04 includes a default policy change that disables support for the Postscript and PDF formats in ImageMagick. This policy can be overridden if necessary by using an alternate ImageMagick policy configuration. Various other issues were also addressed.

tags | advisory, denial of service
systems | linux, ubuntu
advisories | CVE-2017-12805, CVE-2018-16323, CVE-2018-16645, CVE-2018-18023, CVE-2018-20467, CVE-2019-11470, CVE-2019-7175, CVE-2019-7398
SHA-256 | ecf3a57b2183bd65d70fdbbe614267c9c6cd7c405ee6f4ce6e0d3d339ad01411
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