SUMMARY
cPanel, Inc. has released updated RPMs for EasyApache 4 on June 29, 2016, with PHP version 5.5.37. This release addresses vulnerabilities related to CVE-2015-8874. We strongly encourage all PHP 5.5 users to upgrade to version 5.5.37.

AFFECTED VERSIONS

All versions of PHP 5.5 through version 5.5.36

SECURITY RATING
The National Vulnerability Database (NIST) has given the following severity ratings to these CVEs:

CVE-2015-8874 – HIGH
PHP 5.5.37
Fixed bug in the GD module related to CVE-2015-8874

SOLUTION
cPanel, Inc. has released updated RPMs for EasyApache 4 on June 28, 2016, with an updated version of PHP 5.5.37. Unless you have enabled automatic RPM updates in your cron, update your system with either yum update or WHM’s Run System Update interface.

REFERENCES
https://web.nvd.nist.gov/view/vuln/detail?vulnId=CVE-2015-8874
http://php.net/ChangeLog-5.php

For the PGP-signed message, please see EA4 2016-6-28 CVE