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

Author Archive: Mikey Veenstra

Botnet of Infected WordPress Sites Attacking WordPress Sites

This entry was posted in Research, Wordfence, WordPress Security on December 05, 2018 by Mikey Veenstra   17 Replies

The Defiant Threat Intelligence team recently began tracking the behavior of an organized brute force attack campaign against WordPress sites. This campaign has created a botnet of infected WordPress websites to perform its attacks, which attempt XML-RPC authentication to other WordPress sites in order to access privileged accounts. Between Wordfence’s brute force protection and the premium real-time …
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XSS Injection Campaign Exploits WordPress AMP Plugin

This entry was posted in Research, Vulnerabilities, WordPress Security on November 20, 2018 by Mikey Veenstra   19 Replies

News broke last week disclosing a number of vulnerabilities in the AMP For WP plugin, installed on over 100,000 WordPress sites. WordPress contributor Sybre Waaijer identified the security issue and confidentially disclosed it to the WordPress plugins team. To exploit the flaw, an attacker needs to have a minimum of subscriber-level access on a vulnerable site. The …
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Trends Emerging Following Vulnerability In WP GDPR Compliance Plugin

This entry was posted in Research, Vulnerabilities, WordPress Security on November 09, 2018 by Mikey Veenstra   19 Replies

Earlier this week the WP GDPR Compliance plugin was briefly removed from the WordPress.org repository after the discovery of critical security issues impacting its users. In yesterday’s post, we provided some details regarding these issues and illustrated their severity. In the hours since that post was published, our team has continued tracking the adversaries seeking …
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Privilege Escalation Flaw In WP GDPR Compliance Plugin Exploited In The Wild

This entry was posted in Vulnerabilities, WordPress Security on November 08, 2018 by Mikey Veenstra   23 Replies

After its removal from the WordPress plugin repository yesterday, the popular plugin WP GDPR Compliance released version 1.4.3, an update which patched multiple critical vulnerabilities. At the time of this writing, the plugin has been reinstated in the WordPress repository and has over 100,000 active installs. The reported vulnerabilities allow unauthenticated attackers to achieve privilege escalation, …
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Defiant’s Top 5 Spooky Security Jokes

This entry was posted in Miscellaneous on October 31, 2018 by Mikey Veenstra   0 Replies

Among a plethora of reasons to enjoy working here, we at Defiant are particularly vocal about our love for the remote office. A team spread across timezones and continents might sound like a challenge in group cohesion, but even though we’re divided geographically, we’ve forged a great culture that a breakroom ping-pong table just can’t …
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Three WordPress Security Mistakes You Didn’t Realize You Made

This entry was posted in General Security, WordPress Security on October 02, 2018 by Mikey Veenstra   20 Replies

Considering the amount of malicious activity that takes place on the internet, it’s no surprise that successful attacks on WordPress sites are launched across a wide variety of vectors. Whether outdated plugin code is to blame, or password reuse, or any number of other security flaws, no site owner sets out to introduce a vulnerability …
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Yes, You Should Probably Have A TLS Certificate

This entry was posted in General Security, WordPress Security on September 18, 2018 by Mikey Veenstra   13 Replies

Last week’s article covering the decision to distrust Symantec-issued TLS certificates generated a great response from our readers. One common question we received, and one that pops up just about any time SSL/TLS comes up, is how to determine when a site does and does not need such a certificate. Spoiler: Your site should probably …
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PSA: Multiple Vulnerabilities Present In Firefox 61

This entry was posted in General Security, Vulnerabilities on September 06, 2018 by Mikey Veenstra   2 Replies

In an advisory published yesterday, Mozilla disclosed the presence of nine security flaws in Firefox 61 which have been patched in the latest release of the browser. Some of the bugs are severe, but at this time do not appear to be receiving attacks in the wild. To protect yourself as a Firefox user, ensure …
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Duplicator Update Patches Remote Code Execution Flaw

This entry was posted in Vulnerabilities, WordPress Security on September 05, 2018 by Mikey Veenstra   3 Replies

A critical remote code execution (RCE) vulnerability has been patched in the latest release of Duplicator, a WordPress backup and migration plugin with millions of downloads. In their public disclosure of this flaw, Synacktiv detailed its scope and severity, and provided a viable proof of concept exploit for the security community. In this post we’ll …
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Ninja Forms Security Updates: What You Need To Know

This entry was posted in Vulnerabilities, WordPress Security on August 28, 2018 by Mikey Veenstra   1 Reply

Yesterday, the popular WordPress plugin Ninja Forms released version 3.3.14, which disclosed and patched two security issues present in the plugin. Upon review of these issues we’ve determined their severity to be moderately low, however due to the plugin’s wide userbase of more than a million active installs we’ve elected to provide a detailed exploration …
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