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Ubuntu Security Notice USN-6757-2

Ubuntu Security Notice USN-6757-2
Posted May 3, 2024
Authored by Ubuntu | Site security.ubuntu.com

Ubuntu Security Notice 6757-2 - 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. 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.

tags | advisory, arbitrary, php, vulnerability
systems | linux, ubuntu
advisories | CVE-2022-4900, CVE-2024-2756, CVE-2024-3096
SHA-256 | 9657a689d1e137641b5539b1d18e172041c6d3cba27fdc722c254145353f09b5

Ubuntu Security Notice USN-6757-2

Change Mirror Download
==========================================================================
Ubuntu Security Notice USN-6757-2
May 02, 2024

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

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

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