An ImageMagick security update has been released for Ubuntu Linux 14.04 LTS,16.04 LTS, 18.04 LTS, and 20.04 LTS.

[USN-6393-1] ImageMagick vulnerability

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Ubuntu Security Notice USN-6393-1
September 21, 2023

imagemagick vulnerability
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A security issue affects these releases of Ubuntu and its derivatives:

- Ubuntu 20.04 LTS (Available with Ubuntu Pro)
- Ubuntu 18.04 LTS (Available with Ubuntu Pro)
- Ubuntu 16.04 LTS (Available with Ubuntu Pro)
- Ubuntu 14.04 LTS (Available with Ubuntu Pro)

Summary:

ImageMagick could be made to crash when processing the -help option.

Software Description:
- imagemagick: Image manipulation programs and library

Details:

It was discovered that ImageMagick did not properly handle memory when
processing the -help option. An attacker could potentially use this
issue to cause a crash.

Update instructions:

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

Ubuntu 20.04 LTS (Available with Ubuntu Pro):
  imagemagick 8:6.9.10.23+dfsg-2.1ubuntu11.9+esm1
  imagemagick-6.q16 8:6.9.10.23+dfsg-2.1ubuntu11.9+esm1
  imagemagick-6.q16hdri 8:6.9.10.23+dfsg-2.1ubuntu11.9+esm1

Ubuntu 18.04 LTS (Available with Ubuntu Pro):
  imagemagick 8:6.9.7.4+dfsg-16ubuntu6.15+esm2
  imagemagick-6.q16 8:6.9.7.4+dfsg-16ubuntu6.15+esm2
  imagemagick-6.q16hdri           8:6.9.7.4+dfsg-16ubuntu6.15+esm2

Ubuntu 16.04 LTS (Available with Ubuntu Pro):
  imagemagick                        8:6.8.9.9-7ubuntu5.16+esm9
  imagemagick-6.q16               8:6.8.9.9-7ubuntu5.16+esm9

Ubuntu 14.04 LTS (Available with Ubuntu Pro):
  imagemagick                        8:6.7.7.10-6ubuntu3.13+esm6

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

References:
  https://ubuntu.com/security/notices/USN-6393-1
  CVE-2022-48541