=========================================================================Ubuntu Security Notice USN-4586-1
October 20, 2020

php-imagick vulnerability
=========================================================================
A security issue affects these releases of Ubuntu and its derivatives:

- Ubuntu 18.04 LTS

Summary:

PHP ImageMagick could be made to crash if it received specially crafted
input.

Software Description:
- php-imagick: PHP extension to create and modify images using the ImageMagick API

Details:

It was discovered that PHP ImageMagick extension didn't check the address used
by an array. An attacker could use this issue to cause PHP ImageMagick to
crash, resulting in a denial of service.

Update instructions:

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

Ubuntu 18.04 LTS:
  php-imagick                     3.4.3~rc2-2ubuntu4.1

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

References:
  https://ubuntu.com/security/notices/USN-4586-1
  CVE-2019-11037

Package Information:
  https://launchpad.net/ubuntu/+source/php-imagick/3.4.3~rc2-2ubuntu4.1