USN-4088-1: PHP vulnerability

7 August 2019

php5 vulnerability

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

  • Ubuntu 14.04 ESM
  • Ubuntu 12.04 ESM


PHP could be made to denial of service, expose sensitive information or execute arbitrary code if it received a specially crafted regular expression.

Software Description

  • php5 - HTML-embedded scripting language interpreter


It was discovered that PHP incorrectly handled certain regular expressions. An attacker could possibly use this issue to expose sensitive information, cause a denial of service or execute arbitrary code.

Update instructions

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

Ubuntu 14.04 ESM
libapache2-mod-php5 - 5.5.9+dfsg-1ubuntu4.29+esm4
php5-cgi - 5.5.9+dfsg-1ubuntu4.29+esm4
php5-cli - 5.5.9+dfsg-1ubuntu4.29+esm4
php5-fpm - 5.5.9+dfsg-1ubuntu4.29+esm4
php5-xmlrpc - 5.5.9+dfsg-1ubuntu4.29+esm4
Ubuntu 12.04 ESM
libapache2-mod-php5 - 5.3.10-1ubuntu3.38
php5-cgi - 5.3.10-1ubuntu3.38
php5-cli - 5.3.10-1ubuntu3.38
php5-fpm - 5.3.10-1ubuntu3.38
php5-xmlrpc - 5.3.10-1ubuntu3.38

To update your system, please follow these instructions:

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