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

USN-5902-1: PHP vulnerabilities

Ubuntu Security Notice USN-5902-1
February 28, 2023

php7.2, php7.4, php8.1 vulnerabilities

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


Several security issues were fixed in PHP.

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


It was discovered that PHP incorrectly handled certain invalid Blowfish
password hashes. An invalid password hash could possibly allow applications
to accept any password as valid, contrary to expectations. (CVE-2023-0567)

It was discovered that PHP incorrectly handled resolving long paths. A
remote attacker could possibly use this issue to obtain or modify sensitive
information. (CVE-2023-0568)

It was discovered that PHP incorrectly handled a large number of parts in
HTTP form uploads. A remote attacker could possibly use this issue to cause
PHP to consume resources, leading to a denial of service. (CVE-2023-0662)

Update instructions:

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

Ubuntu 22.10:
libapache2-mod-php8.1 8.1.7-1ubuntu3.3
php8.1 8.1.7-1ubuntu3.3
php8.1-cgi 8.1.7-1ubuntu3.3
php8.1-cli 8.1.7-1ubuntu3.3
php8.1-fpm 8.1.7-1ubuntu3.3

Ubuntu 22.04 LTS:
libapache2-mod-php8.1 8.1.2-1ubuntu2.11
php8.1 8.1.2-1ubuntu2.11
php8.1-cgi 8.1.2-1ubuntu2.11
php8.1-cli 8.1.2-1ubuntu2.11
php8.1-fpm 8.1.2-1ubuntu2.11

Ubuntu 20.04 LTS:
libapache2-mod-php7.4 7.4.3-4ubuntu2.18
php7.4 7.4.3-4ubuntu2.18
php7.4-cgi 7.4.3-4ubuntu2.18
php7.4-cli 7.4.3-4ubuntu2.18
php7.4-fpm 7.4.3-4ubuntu2.18

Ubuntu 18.04 LTS:
libapache2-mod-php7.2 7.2.24-0ubuntu0.18.04.17
php7.2 7.2.24-0ubuntu0.18.04.17
php7.2-cgi 7.2.24-0ubuntu0.18.04.17
php7.2-cli 7.2.24-0ubuntu0.18.04.17
php7.2-fpm 7.2.24-0ubuntu0.18.04.17

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

CVE-2023-0567, CVE-2023-0568, CVE-2023-0662

Package Information: