USN-3566-1: PHP vulnerabilities
Ubuntu Security Notice USN-3566-1
12th February, 2018
A security issue affects these releases of Ubuntu and its derivatives:
- Ubuntu 14.04 LTS
Several security issues were fixed in PHP.
- php5 - HTML-embedded scripting language interpreter
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. (CVE-2018-5712)
It was discovered that PHP incorrectly handled memory when unserializing
certain data. A remote attacker could use this issue to cause PHP to crash,
resulting in a denial of service, or possibly execute arbitrary code.
It was discovered that PHP incorrectly handled 'front of' and 'back of'
date directives. A remote attacker could possibly use this issue to obtain
sensitive information. (CVE-2017-16642)
The problem can be corrected by updating your system to the following package version:
- Ubuntu 14.04 LTS:
- php5-cli 5.5.9+dfsg-1ubuntu4.23
- php5-cgi 5.5.9+dfsg-1ubuntu4.23
- libapache2-mod-php5 5.5.9+dfsg-1ubuntu4.23
- php5-fpm 5.5.9+dfsg-1ubuntu4.23
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.