LINUX

Pierluigi Paganini October 31, 2025
Old Linux Kernel flaw CVE-2024-1086 resurfaces in ransomware attacks

CISA warns ransomware gangs exploit CVE-2024-1086, a Linux kernel flaw in netfilter: nf_tables, introduced in 2014 and patched in Jan 2024. CISA warned that ransomware gangs are exploiting CVE-2024-1086, a high-severity Linux kernel flaw introduced in 2014 and patched in January 2024. CISA didn’t provide details about the ransomware attacks exploiting the flaw or name […]

Pierluigi Paganini October 27, 2025
Linux variant of Qilin Ransomware targets Windows via remote management tools and BYOVD

Qilin ransomware group used Linux binaries on Windows to evade EDRs, steal backups, and disable defenses via BYOVD attacks. Trend Research found that the Qilin ransomware group (aka Agenda) used a Linux ransomware binary on Windows systems via legitimate remote tools, bypassing Windows defenses and EDRs. The cross-platform method enables stealthy attacks, stealing backup credentials […]

Pierluigi Paganini October 16, 2025
Operation Zero Disco: Threat actors targets Cisco SNMP flaw to drop Linux rootkits

Hackers exploit Cisco SNMP flaw CVE-2025-20352 in “Zero Disco” attacks to deploy Linux rootkits on outdated systems, researchers report. Trend Micro researchers disclosed details of a new campaign, tracked as Operation Zero Disco, that exploited a recently disclosed security flaw impacting Cisco IOS Software and IOS XE Software to deploy Linux rootkits on older, unprotected […]

Pierluigi Paganini October 15, 2025
200,000 Linux systems from Framework are shipped with signed UEFI components vulnerable to Secure Boot bypass

About 200K Linux systems from Framework shipped with signed UEFI components vulnerable to Secure Boot bypass, allowing bootkit installation and persistence. Firmware security company Eclypsium warns that about 200,000 Linux systems from Framework are shipped with signed UEFI components vulnerable to Secure Boot bypass, allowing bootkit installation and persistence. The experts pointed out that signed […]

Pierluigi Paganini August 21, 2025
Hackers deploy DripDropper via Apache ActiveMQ flaw, patch systems to evade detection

Hackers exploit Apache ActiveMQ flaw to install DripDropper on Linux, then patch it to block rivals and hide their tracks. Red Canary researchers observed attackers exploit a 2-year-old Apache ActiveMQ vulnerability, tracked as CVE-2023-46604 (CVSS score of 10.0), to gain persistence on cloud Linux systems and deploy DripDropper malware. Uniquely, they patch the flaw post-exploit […]

Pierluigi Paganini August 10, 2025
BadCam: Linux-based Lenovo webcam bugs enable BadUSB attacks

Lenovo webcam flaws, dubbed BadCam, let attackers turn them into BadUSB devices to inject keystrokes and launch OS-independent attacks. Eclypsium researchers found vulnerabilities in some Lenovo webcams, collectively dubbed BadCam, that could let attackers turn them into BadUSB devices to inject keystrokes and launch OS-independent attacks. Principal security researchers Jesse Michael and Mickey Shkatov demonstrated […]

Pierluigi Paganini August 02, 2025
New Linux backdoor Plague bypasses auth via malicious PAM module

A stealthy Linux backdoor named Plague, hidden as a malicious PAM module, allows attackers to bypass auth and maintain persistent SSH access. Nextron Systems researchers discovered a new stealthy Linux backdoor called Plague, hidden as a malicious PAM (Pluggable Authentication Module) module. It silently bypasses authentication and grants persistent SSH access. A Pluggable Authentication Module […]

Pierluigi Paganini July 25, 2025
Koske, a new AI-Generated Linux malware appears in the threat landscape

Koske is a new Linux malware designed for cryptomining, likely developed with the help of artificial intelligence. Koske is a new Linux AI-generated malware that was developed for cryptomining activities. Aquasec researchers reported that the malicious code uses rootkits and polyglot image file abuse to evade detection. Attackers exploit a misconfigured server to drop backdoors […]

Pierluigi Paganini July 04, 2025
Critical Sudo bugs expose major Linux distros to local Root exploits

Critical Sudo flaws let local users gain root access on Linux systems, the vulnerabilities affect major Linux distributions. Cybersecurity researchers disclosed two vulnerabilities in the Sudo command-line utility for Linux and Unix-like operating systems. Local attackers can exploit the vulnerabilities to escalate privileges to root on affected systems. Sudo (short for “superuser do”) is a […]

Pierluigi Paganini June 20, 2025
Linux flaws chain allows Root access across major distributions

Researchers discovered two local privilege escalation flaws that could let attackers gain root access on systems running major Linux distributions. Qualys researchers discovered two local privilege escalation (LPE) vulnerabilities, an attacker can exploit them to gain root privileges on machines running major Linux distributions. The two vulnerabilities are: The first flaw (CVE-2025-6018) allows an unprivileged […]