Threat Level: green Handler on Duty: Brad Duncan

SANS ISC: WordPress Forces Password Reset - SANS Internet Storm Center SANS ISC InfoSec Forums

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WordPress Forces Password Reset

WordPress is currently investigating a series of "[...] suspicious commits to several popular plugins (AddThis, WPtouch, and W3 Total Cache) containing cleverly disguised backdoors. We determined the commits were not from the authors, rolled them back, pushed updates to the plugins, and shut down access to the plugin repository while we looked for anything else unsavory." [1]

If you have a, and account, you will be required to choose a new password. You can change your password here.



Guy Bruneau IPSS Inc. gbruneau at isc dot sans dot edu


523 Posts
ISC Handler
Jun 22nd 2011
I have a few WordPress sites and they are prompting me to update WPtouch and W3 Total Cache. Usually, I just do the automatic updates but it sounds like the current versions have a backdoor?

W3 Total Cache
You have version installed. Update to

You have version 1.9.27 installed. Update to 1.9.29.

8 Posts
> WordPress WPtouch Plugin - Backdoor Security Issue
Release Date: 2011-06-23
Criticality level: Highly critical
Solution Status: Vendor Patch ...
... compromised source files were distributed on June 21st, 2011 and possibly prior.
Solution: Update to version 1.9.29.
> WordPress W3 Total Cache Plugin - Backdoor Security Issue
Solution: Manually install version downloaded after June 21st, 2011.
> WordPress AddThis Plugin - Backdoor Security Issue
Solution: Manually install version 2.2.0 downloaded after June 21st, 2011.

160 Posts

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