Multiple Vulnerabilities in PHP Could Allow for Arbitrary Code Execution

March 2, 2018


Multiple vulnerabilities have been discovered in PHP, the most severe of which could allow an attacker to execute arbitrary code.  PHP is a programming language originally designed for use in web-based applications with HTML content.  PHP supports a wide variety of platforms and is used by numerous web-based software applications.  [1]


Depending on the privileges associated with the application, an attacker
could install programs; view, change, or delete data; or create new accounts
with full user rights.  Failed exploitation could result in a denial-of-service


  • PHP 7.2 prior to 7.2.3
  • PHP 7.0 prior to 7.0.28
  • PHP 5.0 prior to 5.6.34


  • Upgrade to the latest version of PHP immediately, after appropriate testing.
  • Verify no unauthorized system modifications have occurred on system before applying patch.
  • Apply the principle of Least Privilege to all systems and services.
  • Remind users not to visit websites or follow links provided by unknown or untrusted sources.