==========================================================================
Ubuntu Security Notice USN-3600-1
March 19, 2018

php5, php7.0, php7.1 vulnerabilities
==========================================================================

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

- Ubuntu 17.10
- Ubuntu 16.04 LTS
- Ubuntu 14.04 LTS

Summary:

Several security issues were fixed in PHP.

Software Description:
- php7.1: 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 stream metadata. A
remote attacker could possibly use this issue to set arbitrary metadata.
This issue only affected Ubuntu 14.04 LTS. (CVE-2016-10712)

It was discovered that PHP incorrectly handled the PHAR 404 error page. A
remote attacker could possibly use this issue to conduct cross-site
scripting (XSS) attacks. This issue only affected Ubuntu 16.04 LTS and
Ubuntu 17.10. (CVE-2018-5712)

It was discovered that PHP incorrectly handled parsing certain HTTP
responses. A remote attacker could use this issue to cause PHP to crash,
resulting in a denial of service, or possibly execute arbitrary code.
(CVE-2018-7584)

Update instructions:

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

Ubuntu 17.10:
  libapache2-mod-php7.1           7.1.15-0ubuntu0.17.10.1
  php7.1-cgi                      7.1.15-0ubuntu0.17.10.1
  php7.1-cli                      7.1.15-0ubuntu0.17.10.1
  php7.1-fpm                      7.1.15-0ubuntu0.17.10.1

Ubuntu 16.04 LTS:
  libapache2-mod-php7.0           7.0.28-0ubuntu0.16.04.1
  php7.0-cgi                      7.0.28-0ubuntu0.16.04.1
  php7.0-cli                      7.0.28-0ubuntu0.16.04.1
  php7.0-fpm                      7.0.28-0ubuntu0.16.04.1

Ubuntu 14.04 LTS:
  libapache2-mod-php5             5.5.9+dfsg-1ubuntu4.24
  php5-cgi                        5.5.9+dfsg-1ubuntu4.24
  php5-cli                        5.5.9+dfsg-1ubuntu4.24
  php5-fpm                        5.5.9+dfsg-1ubuntu4.24

In Ubuntu 16.04 LTS and Ubuntu 17.10, 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-3600-1
  CVE-2016-10712, CVE-2018-5712, CVE-2018-7584

Package Information:
  https://launchpad.net/ubuntu/+source/php7.1/7.1.15-0ubuntu0.17.10.1
  https://launchpad.net/ubuntu/+source/php7.0/7.0.28-0ubuntu0.16.04.1
  https://launchpad.net/ubuntu/+source/php5/5.5.9+dfsg-1ubuntu4.24