Updates on CyberSecurity, WordPress and what we're cooking in the lab today.

Category Archive: WordPress Security

New Attacker Scanning for SSH Private Keys on Websites

This entry was posted in General Security, WordPress Security on October 18, 2017 by Mark Maunder   11 Replies

Wordfence is seeing a significant spike in SSH private key scanning activity. We are releasing this advisory to ensure that our customers and the broader WordPress community are aware of this new activity and of the risk of making private SSH keys public, and to explain how to avoid this problem....read more

12.8% of Sites Have Sensitive File Disclosure Vulnerabilities

This entry was posted in Vulnerabilities, WordPress Security on October 12, 2017 by Dan Moen   3 Replies

As you probably know we launched Gravityscan this May. Gravityscan is a security scanner for any website that serves as a great complement to Wordfence. Yesterday we were analyzing aggregate scan result data from Gravityscan, and we noticed data that surprised us: 12.8% of sites we scan have at least one sensitive file visible to anyone on the internet....read more

Postman SMTP Plugin With Unpatched Vulnerability Removed From Directory

This entry was posted in Vulnerabilities, Wordfence, WordPress Security on October 6, 2017 by Dan Moen   24 Replies

We have received a number of questions regarding the Postman SMTP plugin which was removed from the WordPress.org directory this week. According to an archived snapshot, the plugin is installed on over 100,000 websites. We assume it was removed because it contains a publicly known reflected cross-site scripting (XSS) vulnerability that has not been fixed. Both Wordfence Free and Premium users who have the firewall enabled have been protected against attempts to exploit this vulnerability from day one. In addition, we alerted all Wordfence users who have the plugin installed when it was removed from the plugin directory....read more

The September 2017 WordPress Attack Report

This entry was posted in Monthly Attack Activity Report, WordPress Security on October 6, 2017 by Dan Moen   5 Replies

This edition of the WordPress Attack Report is a continuation of the monthly series we've been publishing since December 2016. Reports from the previous months can be found here....read more

Ask Wordfence Episode 1: Setting Up Minimum Viable WordPress Security

This entry was posted in Videos, WordPress Security on October 3, 2017 by Mark Maunder   28 Replies

Last week we emailed a small group of our customers asking them to contribute questions for a series of videos we will be running. We received questions from many of you, so thank you very much for participating!...read more

3 Zero-Day Plugin Vulnerabilities Being Exploited In The Wild

This entry was posted in Vulnerabilities, WordPress Security on October 2, 2017 by Brad Haas   6 Replies

As part of our site cleaning service, our security analysts track down the method the attacker used to compromise the site. Often this involves quite a bit of investigative work, and recently it led us to find 0-day exploits in three separate plugins. The exploits were elusive: a malicious file seemed to appear out of nowhere, and even sites with access logs only showed a POST request to /wp-admin/admin-ajax.php at the time the file was created. But we captured the attacks in our threat data, and our lead developer Matt Barry was able to reconstruct the exploits. We quickly pushed new WAF rules to block these exploits. Premium customers received the new rules and were protected immediately. We also notified the plugin authors; all three have published updates to fix the vulnerabilities....read more

9 WordPress Plugins Targeted in Coordinated 4.5-Year Spam Campaign

This entry was posted in WordPress Security on September 20, 2017 by Mark Maunder   70 Replies

On Tuesday last week we published a post that described how someone had released an update to the Display Widgets plugin which contained a backdoor that allowed them to publish content to any site using the plugin. We also described how they exploited that backdoor to publish spam....read more

WordPress Security Update 4.8.2 – Update Immediately

This entry was posted in WordPress Security on September 19, 2017 by Mark Maunder   9 Replies

WordPress Core version 4.8.2 has just been released. This is a minor update and a security release which means that your sites will update automatically within the next 24 hours unless you have disabled auto updates....read more

Staying Ahead of WordPress Attackers with the Real-Time IP Blacklist

This entry was posted in Wordfence, WordPress Security on September 19, 2017 by Dan Moen   12 Replies

WordPress sites are under constant attack by criminals around the world. It is unnerving to see them at work, looking for security vulnerabilities to exploit and trying thousands of passwords. And when they are successful, they inflict pain in the form of lost revenue, damaged reputation and clean-up expenses. It's no wonder that Wordfence users love our blocking features. There's nothing more satisfying than taking direct action against an evil adversary....read more

The August 2017 WordPress Attack Report

This entry was posted in Monthly Attack Activity Report, WordPress Security on September 15, 2017 by Dan Moen   6 Replies

This is the ninth edition of the WordPress Attack Report series we've been publishing since December 2016. You can find reports from the previous months here:...read more

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