A PHP security update has been released for Ubuntu Linux 20.10.

USN-4583-2: PHP vulnerabilities

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Ubuntu Security Notice USN-4583-2
October 27, 2020

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

- Ubuntu 20.10

Summary:

Several security issues were fixed in PHP.

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

Details:

USN-4583-1 fixed vulnerabilities in PHP. This update provides
the corresponding update for Ubuntu 20.10.

Original advisory details:

It was discovered that PHP incorrectly handled certain encrypt ciphers.
An attacker could possibly use this issue to decrease security or cause
incorrect encryption data. (CVE-2020-7069)

It was discorevered that PHP incorrectly handled certain HTTP cookies.
An attacker could possibly use this issue to forge cookie which is supposed to
be secure. (CVE-2020-7070)

Update instructions:

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

Ubuntu 20.10:
libapache2-mod-php7.4 7.4.9-1ubuntu1.1
php7.4-cgi 7.4.9-1ubuntu1.1
php7.4-cli 7.4.9-1ubuntu1.1
php7.4-curl 7.4.9-1ubuntu1.1
php7.4-fpm 7.4.9-1ubuntu1.1

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

References:
  https://usn.ubuntu.com/4583-2
  https://usn.ubuntu.com/4583-1
CVE-2020-7069, CVE-2020-7070

Package Information:
  https://launchpad.net/ubuntu/+source/php7.4/7.4.9-1ubuntu1.1