USN-6757-2: PHP vulnerabilities

Releases

• Ubuntu 23.10
• Ubuntu 22.04 LTS
• Ubuntu 20.04 LTS

Packages

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

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

• 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

• 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

• CVE-2022-4900
• CVE-2024-2756
• CVE-2024-3096

Related notices

• USN-6757-1