A GraphicsMagick update has been released for Ubuntu Linux 16.04 LTS to address several security issues.

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Ubuntu Security Notice USN-4248-1
January 22, 2020

graphicsmagick vulnerabilities
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A security issue affects these releases of Ubuntu and its derivatives:

- Ubuntu 16.04 LTS

Summary:

Several security issues were fixed in GraphicsMagick.

Software Description:
- graphicsmagick: collection of image processing tools

Details:

It was discovered that GraphicsMagick incorrectly handled certain image files.
An attacker could possibly use this issue to cause a denial of service or other
unspecified impact.

Update instructions:

The problem can be corrected by updating your system to the following
package versions:

Ubuntu 16.04 LTS:
graphicsmagick 1.3.23-1ubuntu0.5
libgraphicsmagick++-q16-12 1.3.23-1ubuntu0.5
libgraphicsmagick-q16-3 1.3.23-1ubuntu0.5

In general, a standard system update will make all the necessary changes.

References:
  https://usn.ubuntu.com/4248-1
CVE-2017-16545, CVE-2017-16547, CVE-2017-16669, CVE-2017-17498,
CVE-2017-17500, CVE-2017-17501, CVE-2017-17502, CVE-2017-17503,
CVE-2017-17782, CVE-2017-17783

Package Information:
  https://launchpad.net/ubuntu/+source/graphicsmagick/1.3.23-1ubuntu0.5