Kernel 2.6 rootkits and the quest for Linux security
BREAKING IN AND KEEPING OUT
Your Linux system may not be so airtight after all. To understand the threats, you need to think like an intruder. We'll show you what the intruders are thinking now about the Linux 2.6 kernel.
Of all the most devilish creations in the history of cyber crime, the rootkit is perhaps the most ingenious. A rootkit is a bundle of tools for the network intruder. An attacker who gains access to a computer can upload the rootkit and use the tools to gain control of the system. One interesting aspect of a rootkit is its ability to cover the intruder’s tracks. Doctored-up versions of common monitoring utilities such as netstat and ps hide any sign of the attack. Many, many rootkits were copied onto many computers around the world. But eventually, developers and security specialists grew wise to the ways of user space rootkits. Experts learned to detect the intruder’s presence by looking behind the standard Unix tools for evidence of changes. But rather than giving up, the intruders went on to something new. The kernel rootkit is a new generation of intrusion tool that weaves itself into the Linux system at a very deep level – below the reach of any userland detection tools. Armed with the kernel rootkit, the intruders again gained the upper hand – at least temporarily.
Buy this article as PDF
(incl. VAT)
Buy Linux Magazine
US / Canada
UK / Australia
News
-
EndeavorOS 21.4 Has Arrived
Arch-based EndeavorOS 21.4 is finally available for download with plenty of new features and improvements.
-
NixOS 21.11 Now Available for Download
NixOS “Porcupine” has been made available for installation and includes numerous improvements.
-
KDE Plasma Developers Introduce a GNOME-Like Overview
A new overview effect makes it easier for users to interact with both Plasma Activities and Virtual Desktops.
-
Rocky Linux 8.5 Now Available with Secure Boot Support
The latest iteration of CentOS alternative, Rocky Linux has arrived and includes numerous updates as well as support for Secure Boot.
-
System76 Developing a New Desktop Environment
The makers of Pop!_OS are currently in the early stages of creating a brand new, non-GNOME, desktop environment.
-
Hetzner Opens New Location in the USA
The Hetzner cost-effective Cloud solution has arrived in the United States to offer cloud servers that offer solid performance without a high price.
-
KDE Plasma 5.24 Introduces Fingerprint Reader Support
The next release of the KDE Plasma desktop environment will include support for fingerprint readers for session authentication and more.
-
Ubuntu 21.10 Released and Finally Includes Gnome 40
The most anticipated update to Ubuntu is finally here and the workflow couldn't be better.
-
Linux Can Now Run on Apple’s M1 Chipset
Linux users looking to take advantage of Apple Silicon are about to get their wish with the M1 chipset.
-
MX Linux 21 RC Candidate Available For Testing
The MX Linux development team has released the RC images for MX Linux 21 for testing purposes.