A large majority of the malware we find on compromised websites are backdoors that allow an attacker to maintain unauthorized access to the site and execute whatever commands they want. Another common scenario includes malware which is directly injected into a website’s files and used to redirect traffic, steal credit cards and other sensitive information, […]
Tag Archives: WordPress Security
WordPress Malware Disables Security Plugins to Avoid Detection
An alarm or monitoring system is a great tool that can be used to improve the security of a home or website, but what if an attacker can easily disable it? I’ve previously written about malware that reverses security hardening measures enacted either manually by the owner, or through the use of a security plugin […]
Reflected XSS in WordPress Plugin Admin Pages
The administrative dashboard in WordPress is a pretty safe place: Only elevated users can access it. Exploiting a plugin’s admin panel would serve very little purpose here — an administrator already has the required permissions to do all of the actions a vulnerability could cause. While this is usually true, there are a number of […]
Critical Vulnerability in File Manager Plugin Affecting 700k WordPress Websites
Yesterday, the WordPress plugin File Manager was updated, fixing a critical vulnerability allowing any website visitor to gain complete access to the website. Users of our WAF were never vulnerable to this exploit. The Sucuri firewall blocks malicious payloads by default using our generic exploitation rules. Technical Details The vulnerability originated from the remains of […]
Vulnerabilities Digest: July 2020
Relevant Plugins and Vulnerabilities: Plugin Vulnerability Patched Version Installs Asset CleanUp: Page Speed Authenticated XSS 1.4.6.7 80000 Quiz And Survey Master Authenticated Stored XSS 7.0.0 30000 Comments – wpDiscuz 7.0.0 – Arbitrary File Upload 7.0.5 70000 Real Estate 7 Reflected XSS 3.0.4 8000 CarePlus Reflected XSS — 5000 WooCommerce Subscriptions Unauthenticated Stored XSS 2.6.3 10000 […]
Reverse String WooCommerce WordPress Credit Card Swiper
As 2020 continues to be the worst year in almost anybody’s lifetime, allow me to take this opportunity to stoke the fires of your existential dread even further. As a sequel to my last blog post earlier this year about the credit card swiper that I found on a WordPress ecommerce website using WooCommerce, today […]
Fake WordPress Plugin SiteSpeed Serves Malicious Ads & Backdoors
Fake WordPress plugins appear to be trending as an effective way of establishing a foothold on compromised websites. During a recent investigation, we discovered a fake component which was masquerading as a legitimate plugin. Named SiteSpeed, it contained a lot of interesting malicious capabilities. Unwanted Advertisements The malicious plugin can be used by the attacker […]
Pirated WordPress Plugins Bundled with Backdoors
One widespread belief among webmasters is that attackers typically only compromise websites in a couple of ways: by exploiting vulnerabilities or stealing login credentials. Although these are certainly two of the more common attack vectors, another method is often overlooked — but the result is just as hazardous. Whenever an attacker can successfully trick a […]
How to Find & Fix WordPress Pharma Hack
It’s hard for any website owner to discover pharmaceutical spam. Finding bogus content for prescription drugs on a website you watched grow from a tiny blog can be heartbreaking. But don’t blame your website: it just got caught up in a bad crowd of SEO spammers. SEO spam occurs when bad actors inject a website […]
WordPress Malware Collects Sensitive WooCommerce Data
During a recent investigation, our team found malicious code that reveals how attackers are performing reconnaissance to identify if sites are actively using WooCommerce in a compromised hosting environment. These compromised websites are victims of the ongoing wave of exploits against vulnerable WordPress plugins. Why are WooCommerce websites being targeted? WooCommerce is a powerful WordPress […]
