08.06.14: WordPress 3.9.2 is now available as a security release for all previous versions. You are strongly encouraged to update your sites immediately.
This release fixes a possible denial of service issue in PHP’s XML processing, reported by Nir Goldshlager of the Salesforce.com Product Security Team. It was fixed by Michael Adams and Andrew Nacin of the WordPress security team and David Rothstein of the Drupal security team. This is the first time our two projects have coordinated on joint security releases.
WordPress 3.9.2 also contains other security changes:
- 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.
We appreciated responsible disclosure of these issues directly to our security team. For more information, see the release notes or consult the list of changes.
WordPress Updating Tips
If you have automatic updates enabled WordPress will take care of this security update for you and you’ll get a system e-mail letting you know that process was a success.
When updating WordPress themes or plugins following the simple steps below can save you some headaches. Take the time to double-check with your theme’s developer *before* updating to see if they have any concerns or comments about your theme and this new version. If you are on a quality theme your developer will be on top of this.
Step-by-step instructions to help you safely and easily update to the most recent version of WordPress.
Before you update we need to do a little housekeeping:
- Save a copy of all your WordPress files, pages and posts to your hard drive. You do this by clicking on the Tools icon in the left sidebar and then Export. On the next screen click on Download Export File. You might want to create a new Folder on your hard drive where you keep all your Website files. Name it WP Backup so you know to save all backup files for WP there (and you’ll know where to find them if you need them). It is a good idea to back up this file once a month anyway regardless if an update is needed.
- Backup your WordPress database. There is a nifty plugin that makes this process a no brainer, WP-DBManager. This plugin is also a must have for repairing and optimizing your database (which you should be doing minimally monthly to keep things running smoothly).
- Do a quick double-check with your framework/theme developer to see if there are an issues with their themes and the most recent WordPress update. Same goes for your plugins. The last thing you want to do is update WordPress to find out after the fact your theme or plugins have conflicts.
- Cover all the bases and download your theme/framework/child theme folders to your local hard drive. This is just good practice if you have customized any theme files.
- To be safe, deactivate all plugins before upgrading.
It is a good idea to Review my article:
WordPress How To: Do the Mother of All Backups
Once you get the above tasks accomplished, follow the links in the nag bar (it’s called a nag because that yellow bar will be up there “nagging” you until you take care of the important issue noted) and update your site to the latest version of WordPress.
Then, don’t forget to reactivate and update your plugins. You’ll see with each WordPress update that plugin developers also update their plugins which you can also do with one click. You’ll see the now familiar yellow nag bar under the plugin name in the plugins area with a link to “upgrade automatically.”
If you find after an update that something is not working as it was, go through the systematic process of deactivating your plugins one at a time until you find the culprit. If the developer has not updated his/her plugin to work with the lasted update, find another plugin whose developer is on top of these things.
Updating should not be ignored or put off. When you keep up with WordPress, have a Premium Theme and Plugin updates, you are not only keeping up with technology, but you make sure your site is secure and functioning error free.
At your service,