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Ubuntu Security Notice USN-6305-2
February 27, 2024
php7.0, php7.2, php7.4 vulnerabilities
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A security issue affects these releases of Ubuntu and its derivatives:
- Ubuntu 20.04 LTS
- Ubuntu 18.04 LTS (Available with Ubuntu Pro)
- Ubuntu 16.04 LTS (Available with Ubuntu Pro)
Summary:
Several security issues were fixed in PHP.
Software Description:
- php7.4: HTML-embedded scripting language interpreter
- php7.2: HTML-embedded scripting language interpreter
- php7.0: HTML-embedded scripting language interpreter
Details:
USN-6305-1 fixed several vulnerabilities in PHP. This update provides
the corresponding update for Ubuntu 16.04 LTS, Ubuntu 18.04 LTS, and Ubuntu 20.04 LTS.
Original advisory details:
 It was discovered that PHP incorrectly handled certain XML files.
 An attacker could possibly use this issue to expose sensitive information.
 (CVE-2023-3823)
 It was discovered that PHP incorrectly handled certain PHAR files.
 An attacker could possibly use this issue to cause a crash,
 expose sensitive information or execute arbitrary code.
 (CVE-2023-3824)
Update instructions:
The problem can be corrected by updating your system to the following
package versions:
Ubuntu 20.04 LTS:
  libapache2-mod-php7.4           7.4.3-4ubuntu2.20
  php7.4                          7.4.3-4ubuntu2.20
  php7.4-cgi                      7.4.3-4ubuntu2.20
  php7.4-cli                      7.4.3-4ubuntu2.20
  php7.4-fpm                      7.4.3-4ubuntu2.20
  php7.4-xml                      7.4.3-4ubuntu2.20
Ubuntu 18.04 LTS (Available with Ubuntu Pro):
  libapache2-mod-php7.2           7.2.24-0ubuntu0.18.04.17+esm2
  php7.2                          7.2.24-0ubuntu0.18.04.17+esm2
  php7.2-cgi                      7.2.24-0ubuntu0.18.04.17+esm2
  php7.2-cli                      7.2.24-0ubuntu0.18.04.17+esm2
  php7.2-fpm                      7.2.24-0ubuntu0.18.04.17+esm2
  php7.2-xml                      7.2.24-0ubuntu0.18.04.17+esm2
Ubuntu 16.04 LTS (Available with Ubuntu Pro):
  libapache2-mod-php7.0           7.0.33-0ubuntu0.16.04.16+esm8
  php7.0                          7.0.33-0ubuntu0.16.04.16+esm8
  php7.0-cgi                      7.0.33-0ubuntu0.16.04.16+esm8
  php7.0-cli                      7.0.33-0ubuntu0.16.04.16+esm8
  php7.0-fpm                      7.0.33-0ubuntu0.16.04.16+esm8
  php7.0-xml                      7.0.33-0ubuntu0.16.04.16+esm8
In general, a standard system update will make all the necessary changes.
References:
  https://ubuntu.com/security/notices/USN-6305-2
  https://ubuntu.com/security/notices/USN-6305-1
  CVE-2023-3823, CVE-2023-3824
Package Information:
  https://launchpad.net/ubuntu/+source/php7.4/7.4.3-4ubuntu2.20