One of the ways we help to improve the security of WordPress plugins, not just for our customers, but for everyone using them, is the proactive monitoring of changes made to plugins in the Plugin Directory to try to catch serious vulnerabilities. That sometimes leads to us catching a vulnerability of a more limited version of one of those serious vulnerability types, which isn’t as much concern for the average website, but could be utilized in a targeted attack. That happened with the authenticated PHP object injection vulnerability we found in the plugin Autoship Cloud. This vulnerability could have allowed an attacker that had access to a WordPress account that has access to admin pages, which would normally be Subscriber level users and above, to exploit a PHP object injection vulnerability.
Since the check used to spot this is also included in our Plugin Security Checker (which is now accessible through a WordPress plugin of its own), it is another of reminder of how that can help to indicate which plugins are in greater need of security review (for which we do as part of our service as well as separately). [Read more]