A PHP security update has been released for Ubuntu Linux 18.04 LTS, 20.04 LTS, 22.04, and 22.10.

USN-5818-1: PHP vulnerability

=========================================================================
Ubuntu Security Notice USN-5818-1
January 23, 2023

php7.2, php7.4, php8.1 vulnerability
=========================================================================
A security issue affects these releases of Ubuntu and its derivatives:

- Ubuntu 22.10
- Ubuntu 22.04 LTS
- Ubuntu 20.04 LTS
- Ubuntu 18.04 LTS

Summary:

PHP could be made do crash or execute arbitrary code if it received
a specially crafted input.

Software Description:
- php8.1: HTML-embedded scripting language interpreter
- php7.4: HTML-embedded scripting language interpreter
- php7.2: HTML-embedded scripting language interpreter

Details:

It was discovered that PHP incorrectly handled certain inputs.
An attacker could possibly use this issue to cause a crash or
execute arbitrary code.

Update instructions:

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

Ubuntu 22.10:
libapache2-mod-php7.4 8.1.7-1ubuntu3.2
libapache2-mod-php8.0 8.1.7-1ubuntu3.2
libapache2-mod-php8.1 8.1.7-1ubuntu3.2
php8.1 8.1.7-1ubuntu3.2
php8.1-cgi 8.1.7-1ubuntu3.2
php8.1-cli 8.1.7-1ubuntu3.2
php8.1-sqlite3 8.1.7-1ubuntu3.2

Ubuntu 22.04 LTS:
libapache2-mod-php7.4 8.1.2-1ubuntu2.10
libapache2-mod-php8.0 8.1.2-1ubuntu2.10
libapache2-mod-php8.1 8.1.2-1ubuntu2.10
php8.1 8.1.2-1ubuntu2.10
php8.1-cgi 8.1.2-1ubuntu2.10
php8.1-cli 8.1.2-1ubuntu2.10
php8.1-sqlite3 8.1.2-1ubuntu2.10

Ubuntu 20.04 LTS:
libapache2-mod-php7.4 7.4.3-4ubuntu2.17
php7.4 7.4.3-4ubuntu2.17
php7.4-cgi 7.4.3-4ubuntu2.17
php7.4-cli 7.4.3-4ubuntu2.17
php7.4-sqlite3 7.4.3-4ubuntu2.17

Ubuntu 18.04 LTS:
libapache2-mod-php7.2 7.2.24-0ubuntu0.18.04.16
php7.2 7.2.24-0ubuntu0.18.04.16
php7.2-cgi 7.2.24-0ubuntu0.18.04.16
php7.2-cli 7.2.24-0ubuntu0.18.04.16
php7.2-sqlite3 7.2.24-0ubuntu0.18.04.16

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

References:
  https://ubuntu.com/security/notices/USN-5818-1
CVE-2022-31631

Package Information:
  https://launchpad.net/ubuntu/+source/php8.1/8.1.7-1ubuntu3.2
  https://launchpad.net/ubuntu/+source/php8.1/8.1.2-1ubuntu2.10
  https://launchpad.net/ubuntu/+source/php7.4/7.4.3-4ubuntu2.17
  https://launchpad.net/ubuntu/+source/php7.2/7.2.24-0ubuntu0.18.04.16