[USN-3766-1] PHP vulnerabilities

[Marc Deslauriers]

==========================================================================
Ubuntu Security Notice USN-3766-1
September 18, 2018

php5, php7.0, php7.2 vulnerabilities
==========================================================================

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

- Ubuntu 18.04 LTS
- Ubuntu 16.04 LTS
- Ubuntu 14.04 LTS

Summary:

Several security issues were fixed in PHP.

Software Description:
- 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 restarting certain child
processes when php-fpm is used. A remote attacker could possibly use this
issue to cause a denial of service. This issue was only addressed in Ubuntu
18.04 LTS. (CVE-2015-9253)

It was discovered that PHP incorrectly handled certain exif tags in JPEG
images. A remote attacker could possibly use this issue to cause PHP to
crash, resulting in a denial of service. (CVE-2018-14851, CVE-2018-14883)

Update instructions:

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

Ubuntu 18.04 LTS:
  libapache2-mod-php7.2           7.2.10-0ubuntu0.18.04.1
  php7.2-cgi                      7.2.10-0ubuntu0.18.04.1
  php7.2-cli                      7.2.10-0ubuntu0.18.04.1
  php7.2-fpm                      7.2.10-0ubuntu0.18.04.1

Ubuntu 16.04 LTS:
  libapache2-mod-php7.0           7.0.32-0ubuntu0.16.04.1
  php7.0-cgi                      7.0.32-0ubuntu0.16.04.1
  php7.0-cli                      7.0.32-0ubuntu0.16.04.1
  php7.0-fpm                      7.0.32-0ubuntu0.16.04.1

Ubuntu 14.04 LTS:
  libapache2-mod-php5             5.5.9+dfsg-1ubuntu4.26
  php5-cgi                        5.5.9+dfsg-1ubuntu4.26
  php5-cli                        5.5.9+dfsg-1ubuntu4.26
  php5-fpm                        5.5.9+dfsg-1ubuntu4.26

In Ubuntu 16.04 LTS and Ubuntu 18.04 LTS, this update uses a new upstream
release, which includes additional bug fixes.

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

References:
  https://usn.ubuntu.com/usn/usn-3766-1
  CVE-2015-9253, CVE-2018-14851, CVE-2018-14883

Package Information:
  https://launchpad.net/ubuntu/+source/php7.2/7.2.10-0ubuntu0.18.04.1
  https://launchpad.net/ubuntu/+source/php7.0/7.0.32-0ubuntu0.16.04.1
  https://launchpad.net/ubuntu/+source/php5/5.5.9+dfsg-1ubuntu4.26

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