Dissecting a PHP web server rootkit

SophosLabs recently acquired a Linux implant associated with compromised BIG-IP Access Policy Management (APM) environments that use Apache and PHP components. The malware demonstrates advanced techniques including custom ELF loading, function hooking, and runtime code patching to evade detection while Read More …

A clever new Linux malware is breaking into systems and then shutting the door behind it to avoid detection

A hacker was recently spotted patching someone’s vulnerable cloud Linux instance – but they did not do it out of the goodness of their heart. Security researchers Red Canary observed a threat actor abusing a maximum severity flaw, tracked as Read More …

Apache Under the Lens: Tomcat’s Partial PUT and Camel’s Header Hijack

In March 2025, Apache disclosed CVE-2025-24813, a vulnerability impacting Apache Tomcat. This is a widely used platform that allows Apache web servers to run Java-based web applications. The flaw allows remote code execution, affecting Apache Tomcat versions 9.0.0.M1 to 9.0.98, Read More …

Proof-of-Concept Released for Critical Apache Struts Vulnerability

Apache has released a security bulletin addressing a critical vulnerability in Apache Struts 2. Apache Struts is an open-source model-view-controller (MVC) framework for creating Java web applications. CVE-2024-53677 is a ‘Unrestricted Upload of File with Dangerous Type’ vulnerability and has Read More …

Weaponizing Apache OFBiz CVE-2023-51467

On December 26, SonicWall disclosed an authentication bypass affecting Apache OFBiz. SonicWall demonstrated the vulnerability, assigned CVE-2023-51467, by accessing the protected HTTP endpoint /webtools/control/ping without authentication. While that proved the vulnerability existed, it did not demonstrate arbitrary code execution. However, Read More …

GoTitan Botnet – Ongoing Exploitation on Apache ActiveMQ

This past October, Apache issued a critical advisory addressing CVE-2023-46604, a vulnerability involving the deserialization of untrusted data in Apache. On November 2, the Cybersecurity and Infrastructure Security Agency (CISA) added CVE-2023-46604 to its known exploited list, KEV Catalog, indicating Read More …

Ransomware gang HelloKitty exploits critical Apache ActiveMQ bug CVE-2023-46604

Beginning Friday, October 27, Rapid7 Managed Detection and Response (MDR) identified suspected exploitation of Apache ActiveMQ CVE-2023-46604 in two different customer environments. In both instances, the adversary attempted to deploy ransomware binaries on target systems in an effort to ransom Read More …

Budworm: Espionage Group Returns to Targeting U.S. Organizations

The Budworm espionage group has mounted attacks over the past six months against a number of strategically significant targets, including the government of a Middle Eastern country, a multinational electronics manufacturer, and a U.S. state legislature. The latter attack is Read More …