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Ubuntu Security Notice USN-4375-1
May 27, 2020

php5, php7.0, php7.2, php7.3, php7.4 vulnerability
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A security issue affects these releases of Ubuntu and its derivatives:

– Ubuntu 20.04 LTS
– Ubuntu 19.10
– Ubuntu 18.04 LTS
– Ubuntu 16.04 LTS
– Ubuntu 14.04 ESM
– Ubuntu 12.04 ESM

Summary:

PHP could be made to crash if it received a specially crafted
file.

Software Description:
– php7.4: server-side, HTML-embedded scripting language (metapackage)
– php7.3: server-side, HTML-embedded scripting language (metapackage)
– php7.2: HTML-embedded scripting language interpreter
– php7.0: HTML-embedded scripting language interpreter
– php5: HTML-embedded scripting language interpreter

Details:

It was discovered that PHP incorrectly handled certain files.
An attacker could possibly use this issue to cause a denial of service.

Update instructions:

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

Ubuntu 20.04 LTS:
libapache2-mod-php7.4 7.4.3-4ubuntu2.2
php7.4-cgi 7.4.3-4ubuntu2.2
php7.4-cli 7.4.3-4ubuntu2.2
php7.4-fpm 7.4.3-4ubuntu2.2
php7.4-mbstring 7.4.3-4ubuntu2.2

Ubuntu 19.10:
libapache2-mod-php7.3 7.3.11-0ubuntu0.19.10.6
php7.3-cgi 7.3.11-0ubuntu0.19.10.6
php7.3-cli 7.3.11-0ubuntu0.19.10.6
php7.3-fpm 7.3.11-0ubuntu0.19.10.6
php7.3-mbstring 7.3.11-0ubuntu0.19.10.6

Ubuntu 18.04 LTS:
libapache2-mod-php7.2 7.2.24-0ubuntu0.18.04.6
php7.2-cgi 7.2.24-0ubuntu0.18.04.6
php7.2-cli 7.2.24-0ubuntu0.18.04.6
php7.2-fpm 7.2.24-0ubuntu0.18.04.6
php7.2-mbstring 7.2.24-0ubuntu0.18.04.6

Ubuntu 16.04 LTS:
libapache2-mod-php7.0 7.0.33-0ubuntu0.16.04.15
php7.0-cgi 7.0.33-0ubuntu0.16.04.15
php7.0-cli 7.0.33-0ubuntu0.16.04.15
php7.0-fpm 7.0.33-0ubuntu0.16.04.15
php7.0-mbstring 7.0.33-0ubuntu0.16.04.15

Ubuntu 14.04 ESM:
libapache2-mod-php5 5.5.9+dfsg-1ubuntu4.29+esm12
php5-cgi 5.5.9+dfsg-1ubuntu4.29+esm12
php5-cli 5.5.9+dfsg-1ubuntu4.29+esm12
php5-fpm 5.5.9+dfsg-1ubuntu4.29+esm12

Ubuntu 12.04 ESM:
libapache2-mod-php5 5.3.10-1ubuntu3.47
php5-cgi 5.3.10-1ubuntu3.47
php5-cli 5.3.10-1ubuntu3.47
php5-fpm 5.3.10-1ubuntu3.47

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

References:
https://usn.ubuntu.com/4375-1
CVE-2019-11048

Package Information:
https://launchpad.net/ubuntu/+source/php7.4/7.4.3-4ubuntu2.2
https://launchpad.net/ubuntu/+source/php7.3/7.3.11-0ubuntu0.19.10.6
https://launchpad.net/ubuntu/+source/php7.2/7.2.24-0ubuntu0.18.04.6
https://launchpad.net/ubuntu/+source/php7.0/7.0.33-0ubuntu0.16.04.15
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