A PHP security update has been released for Ubuntu Linux 18.04 LTS and 20.04 LTS.
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Ubuntu Security Notice USN-5300-2
March 03, 2022
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
Summary:
Several security issues were fixed in PHP.
Software Description:
- php7.4: HTML-embedded scripting language interpreter
- php7.2: HTML-embedded scripting language interpreter
Details:
USN-5300-1 fixed vulnerabilities in PHP. This update provides the
corresponding updates for Ubuntu 18.04 LTS and Ubuntu 20.04 LTS.
Original advisory details:
It was discovered that PHP incorrectly handled certain scripts.
An attacker could possibly use this issue to cause a denial of service.
(CVE-2015-9253, CVE-2017-8923, CVE-2017-9118, CVE-2017-9120)
It was discovered that PHP incorrectly handled certain inputs.
An attacker could possibly use this issue to cause a denial of service,
or possibly obtain sensitive information. (CVE-2017-9119)
It was discovered that PHP incorrectly handled certain scripts with XML
parsing functions.
An attacker could possibly use this issue to obtain sensitive information.
(CVE-2021-21707)
Update instructions:
The problem can be corrected by updating your system to the following
package versions:
Ubuntu 20.04 LTS:
php7.4-cgi 7.4.3-4ubuntu2.10
php7.4-cli 7.4.3-4ubuntu2.10
php7.4-fpm 7.4.3-4ubuntu2.10
Ubuntu 18.04 LTS:
php7.2-cgi 7.2.24-0ubuntu0.18.04.11
php7.2-cli 7.2.24-0ubuntu0.18.04.11
php7.2-fpm 7.2.24-0ubuntu0.18.04.11
In general, a standard system update will make all the necessary changes.
References:
https://ubuntu.com/security/notices/USN-5300-2
https://ubuntu.com/security/notices/USN-5300-1
CVE-2017-8923, CVE-2017-9118, CVE-2017-9119, CVE-2017-9120,
CVE-2021-21707
Package Information:
https://launchpad.net/ubuntu/+source/php7.4/7.4.3-4ubuntu2.10
https://launchpad.net/ubuntu/+source/php7.2/7.2.24-0ubuntu0.18.04.11
