php7.0 regression

A security issue affects these releases of Ubuntu and its
derivatives:

* Ubuntu 16.04 LTS

Summary

USN-4279-1 introduced a regression in PHP.

Software Description

* php7.0 - HTML-embedded scripting language interpreter

Details

USN-4279-1 fixed vulnerabilities in PHP. The updated packages
caused a regression. This update fixes the problem.

We apologize for the inconvenience.

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. This issue only affected Ubuntu 12.04 ESM, Ubuntu 14.04
ESM and Ubuntu 16.04 LTS. (CVE-2015-9253)

It was discovered that PHP incorrectly handled certain inputs. An
attacker could possibly use this issue to expose sensitive
information. (CVE-2020-7059)

It was discovered that PHP incorrectly handled certain inputs. An
attacker could possibly use this issue to execute arbitrary code.
This issue only affected Ubuntu 14.04 ESM, Ubuntu 16.04 LTS,
Ubuntu 18.04 LTS and Ubuntu 19.10. (CVE-2020-7060)

Update instructions

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

Ubuntu 16.04 LTS
libapache2-mod-php7.0 - 7.0.33-0ubuntu0.16.04.12
php7.0-cgi - 7.0.33-0ubuntu0.16.04.12
php7.0-cli - 7.0.33-0ubuntu0.16.04.12
php7.0-fpm - 7.0.33-0ubuntu0.16.04.12

To update your system, please follow these instructions:
https://wiki.ubuntu.com/Security/Upgrades.

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

References

* USN-4279-1
* CVE-2015-9253

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