On August 6 wordpress released an update 3.9.2 to address some security issues on the latest version and a summary of the changes include :
- Fixes a possible denial of service issue in PHP’s XML processing, reported by Nir Goldshlager of the Salesforce.com Product Security Team. Fixed by Michael Adams and Andrew Nacin of the WordPress security team and David Rothstein of the Drupal security team.
- Fixes a possible but unlikely code execution when processing widgets (WordPress is not affected by default), discovered by Alex Concha of the WordPress security team.
- Prevents information disclosure via XML entity attacks in the external GetID3 library, reported by Ivan Novikov of ONSec.
- Adds protections against brute attacks against CSRF tokens, reported by David Tomaschik of the Google Security Team.
- Contains some additional security hardening, like preventing cross-site scripting that could be triggered only by administrators.
A List of Files Revised
readme.html wp-admin/about.php wp-includes/ID3/getid3.lib.php wp-includes/class-IXR.php wp-includes/class-wp-customize-widgets.php wp-includes/compat.php wp-includes/pluggable.php wp-includes/version.php wp-login.php
Since its a security update affecting known and reported DoS service issues I would recommend everyone to take the time and upgrade their wordpress installations to the latest versions.
PS: Don’t forget to update the plugins associated with your wordpress install as well!