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New Linux Bug in Netfilter Firewall Module Lets Attackers Gain Root Access

New Linux Bug in Netfilter Firewall Module Lets Attackers Gain Root Access

Mar 14, 2022
A newly disclosed security flaw in the Linux kernel could be leveraged by a local adversary to gain elevated privileges on vulnerable systems to execute arbitrary code, escape containers, or induce a  kernel panic . Tracked as  CVE-2022-25636  (CVSS score: 7.8), the vulnerability impacts Linux kernel versions 5.4 through 5.6.10 and is a result of a heap out-of-bounds write in the netfilter subcomponent in the kernel. The issue was  discovered  by Nick Gregory, a senior threat researcher at Sophos. "This flaw allows a local attacker with a user account on the system to gain access to out-of-bounds memory, leading to a system crash or a privilege escalation threat," Red Hat  said  in an advisory published on February 22, 2022. Similar alerts have been released by  Debian ,  Oracle Linux ,  SUSE , and  Ubuntu . Netfilter is a  framework  provided by the Linux kernel that enables various networking-related operations, including packet filtering, network address translation,
Hackers Trick Microsoft Into Signing Netfilter Driver Loaded With Rootkit Malware

Hackers Trick Microsoft Into Signing Netfilter Driver Loaded With Rootkit Malware

Jun 28, 2021
Microsoft on Friday said it's investigating an incident wherein a driver signed by the company turned out to be a malicious Windows rootkit that was observed communicating with command-and-control (C2) servers located in China. The driver, called " Netfilter ," is said to target gaming environments, specifically in the East Asian country, with the Redmond-based firm noting that "the actor's goal is to use the driver to spoof their geo-location to cheat the system and play from anywhere." "The malware enables them to gain an advantage in games and possibly exploit other players by compromising their accounts through common tools like keyloggers," Microsoft Security Response Center (MSRC)  said . It's worth pointing out that Netfilter also refers to a legitimate software package , which enables packet filtering and network address translation for Linux based systems. Microsoft dubbed the malware " Retliften ," alluding to "ne
Why Regulated Industries are Turning to Military-Grade Cyber Defenses

Why Regulated Industries are Turning to Military-Grade Cyber Defenses

Jun 14, 2024Cybersecurity / Regulatory Compliance
As cyber threats loom large and data breaches continue to pose increasingly significant risks. Organizations and industries that handle sensitive information and valuable assets make prime targets for cybercriminals seeking financial gain or strategic advantage.  Which is why many highly regulated sectors, from finance to utilities, are turning to military-grade cyber defenses to safeguard their operations. Regulatory Pressures Impacting Cyber Decisions Industries such as finance, healthcare, and government are subject to strict regulatory standards, governing data privacy, security, and compliance. Non-compliance with these regulations can result in severe penalties, legal repercussions, and damage to reputation. To meet regulatory requirements and mitigate the ever-increasing risk, organizations are shifting to adopt more robust cybersecurity measures. Understanding the Increase of Threats Attacks on regulated industries have increased dramatically over the past 5 years, with o
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