On Monday, Daniel Cid, CTO of Sucuri, blogged that "After a bit more time investigating this issue, we were able to confirm that the attack vector is the RevSlider plugin." Some may not find it an easy flush. "The biggest issue is that the RevSlider plugin is a premium plugin, it's not something everyone can easily upgrade and that in itself becomes a disaster for website owner. Some website owners don't even know they have it as it's been packaged and bundled into their themes. We're currently remediating thousands of sites and when engaging with our clients many had no idea the plugin was even within their environment."
Graham Cluley, security blogger and researcher, gave credit to Google for its blacklisting over 11,000 domains on Sunday morning as "a quick-thinking reaction" which hopefully will make it more difficult for attackers to monetize their campaign. Stuart Dredge wrote in the Guardian that "affected site owners have been figuring out how to get their blogs cleaned up and back on Google. If you're one of them, this thread on the official WordPress forum may be useful." He provided the link.
ThemePunch, the company behind the slider, meanwhile, posted a clarification in the comments section on the Securi site about events: "As the developer of the Slider Revolution Responsive WordPress Plugin (referred to as "RevSlider" in this article), we would like to clarify a few things." They said that the nature of plugins bundled in themes caused a lot of older plugin versions to linger around on the web and providing a window for malicious attacks. They said that direct buyers of their plugin were hardly affected by the exploit, as they could use the automatic update tool to keep their plugin secure.
"In February 2014, a critical vulnerability was discovered in our Slider Revolution WordPress Plugin which we immediately fixed in Version 4.2." They emphasized, "Please note !! In fact, only versions 4.1.4 or below, allow for the vulnerability and have to be updated." They said that Envato, which is the marketplace on which they are selling their products, has an article with steps to take.
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