A PHP regression update has been released for Ubuntu 18.04 LTS.

USN-5479-3: PHP regression

==========================================================================
Ubuntu Security Notice USN-5479-3
July 07, 2022

php7.2 regression
==========================================================================

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

- Ubuntu 18.04 LTS

Summary:

USN-5479-1 was incomplete and didn't properly fix one of the addressed
issues.

Software Description:
- php7.2: HTML-embedded scripting language interpreter

Details:

USN-5479-1 fixed vulnerabilities in PHP. Unfortunately that update for
CVE-2022-31625 was incomplete for Ubuntu 18.04 LTS. This update fixes
the problem.

We apologize for the inconvenience.

Original advisory details:

Charles Fol discovered that PHP incorrectly handled initializing certain
arrays when handling the pg_query_params function. A remote attacker could
use this issue to cause PHP to crash, resulting in a denial of service, or
possibly execute arbitrary code. (CVE-2022-31625)
Charles Fol discovered that PHP incorrectly handled passwords in mysqlnd. A
remote attacker could use this issue to cause PHP to crash, resulting in a
denial of service, or possibly execute arbitrary code. (CVE-2022-31626)

Update instructions:

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

Ubuntu 18.04 LTS:
libapache2-mod-php7.2 7.2.24-0ubuntu0.18.04.13
php7.2-cgi 7.2.24-0ubuntu0.18.04.13
php7.2-cli 7.2.24-0ubuntu0.18.04.13
php7.2-fpm 7.2.24-0ubuntu0.18.04.13
php7.2-pgsql 7.2.24-0ubuntu0.18.04.13

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

References:
https://ubuntu.com/security/notices/USN-5479-3
https://ubuntu.com/security/notices/USN-5479-1
CVE-2022-31625

Package Information:
https://launchpad.net/ubuntu/+source/php7.2/7.2.24-0ubuntu0.18.04.13