Ubuntu 22.10 USN-5902-1 Critical: PHP Remote Exploitation Issues

ubuntu

February 28, 2023

Several security issues were fixed in PHP.

Summary

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

Details:

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)

Topics Covered

security advisory denial of service critical software update Ubuntu PHP remote exploitation

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.