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Ubuntu Security Notice USN-6757-2
May 02, 2024

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

- Ubuntu 23.10
- Ubuntu 22.04 LTS
- Ubuntu 20.04 LTS

Summary:

Several security issues were fixed in PHP.

Software Description:
- php8.2: server-side, HTML-embedded scripting language (metapackage)
- php8.1: HTML-embedded scripting language interpreter
- php7.4: HTML-embedded scripting language interpreter

Details:

USN-6757-1 fixed vulnerabilities in PHP. Unfortunately these fixes were incomplete for
Ubuntu 20.04 LTS, Ubuntu 22.04 LTS, and Ubuntu 23.10. This update fixes the problem.

Original advisory details:

 It was discovered that PHP incorrectly handled PHP_CLI_SERVER_WORKERS variable.
 An attacker could possibly use this issue to cause a crash or execute
 arbitrary code. This issue only affected Ubuntu 20.04 LTS, and
 Ubuntu 22.04 LTS. (CVE-2022-4900)

 It was discovered that PHP incorrectly handled certain cookies.
 An attacker could possibly use this issue to cookie by pass.
 (CVE-2024-2756)

 It was discovered that PHP incorrectly handled some passwords.
 An attacker could possibly use this issue to cause an account takeover
 attack. (CVE-2024-3096)

Update instructions:

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

Ubuntu 23.10
  libapache2-mod-php8.2           8.2.10-2ubuntu2.1
  php8.2                          8.2.10-2ubuntu2.1
  php8.2-cgi                      8.2.10-2ubuntu2.1
  php8.2-cli                      8.2.10-2ubuntu2.1
  php8.2-fpm                      8.2.10-2ubuntu2.1
  php8.2-xml                      8.2.10-2ubuntu2.1

Ubuntu 22.04 LTS
  libapache2-mod-php8.1           8.1.2-1ubuntu2.17
  php8.1                          8.1.2-1ubuntu2.17
  php8.1-cgi                      8.1.2-1ubuntu2.17
  php8.1-cli                      8.1.2-1ubuntu2.17
  php8.1-fpm                      8.1.2-1ubuntu2.17
  php8.1-xml                      8.1.2-1ubuntu2.17

Ubuntu 20.04 LTS
  libapache2-mod-php7.4           7.4.3-4ubuntu2.22
  php7.4                          7.4.3-4ubuntu2.22
  php7.4-cgi                      7.4.3-4ubuntu2.22
  php7.4-cli                      7.4.3-4ubuntu2.22
  php7.4-fpm                      7.4.3-4ubuntu2.22
  php7.4-xml                      7.4.3-4ubuntu2.22

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

References:
  https://ubuntu.com/security/notices/USN-6757-2
  https://ubuntu.com/security/notices/USN-6757-1
  CVE-2022-4900, CVE-2024-2756, CVE-2024-3096

Package Information:
  https://launchpad.net/ubuntu/+source/php8.2/8.2.10-2ubuntu2.1
  https://launchpad.net/ubuntu/+source/php8.1/8.1.2-1ubuntu2.17
  https://launchpad.net/ubuntu/+source/php7.4/7.4.3-4ubuntu2.22