CVE-2017-18231 Null dereference in n/a

What is CVE-2017-18231?

CVE-2017-18231 is a medium-severity vulnerability in Debian Debian Linux, published on 14 Mar 2018. An attacker can exploit it over the internet without logging in, and only if a user opens a file or follows a link.

Official description

An issue was discovered in GraphicsMagick 1.3.26. A NULL pointer dereference vulnerability was found in the function ReadEnhMetaFile in coders/emf.c, which allows attackers to cause a denial of service via a crafted file.

Weakness: CWE-476

Which versions are affected by CVE-2017-18231?

It affects 2 products.

Products include Debian Debian Linux, Graphicsmagick Graphicsmagick.

How do I fix CVE-2017-18231?

Upgrade to a fixed version.

Is CVE-2017-18231 being exploited?

There is no known exploitation of CVE-2017-18231 in the wild and no public exploit code.

Other vulnerabilities in Debian Debian Linux

• CVE-2015-3306 ProFTPD Improper Access Control Exploited Critical 10.0
• CVE-2025-49113 RoundCube Webmail Deserialization of Untrusted Data Exploited Critical 9.9
• CVE-2026-24061 GNU InetUtils Argument Injection Exploited Critical 9.8
• CVE-2025-39682 Linux Kernel Improper Check for Unusual or Exceptional Conditions Exploited Critical 9.8
• CVE-2024-9680 Mozilla Firefox Use-After-Free Exploited Critical 9.8

All Debian Debian Linux vulnerabilities

Sources

• CVE record
• NVD
• OSV
• GitHub advisory
• How this page is made

Also known as DEBIAN-CVE-2017-18231, GHSA-v3qf-q4vv-2q93, UBUNTU-CVE-2017-18231.