==========================================================================
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

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