Category: Linux

Cybersecurity, Linux

Dirty COW (CVE-2016–5195): a 0-day local privilege escalation vulnerability in the Linux kernel…

Any user can become root in less than 5 seconds! The bug has existed since Linux kernel version 2.6.22 and was found by Phil Oester. Exploitation of this bug does not leave any trace of anything abnormal happening to the logs. So you can not detect if someone has exploited this against your server. From official page: […]


VirtualBox on Linux: solve USB access problems

With just a simple command! Have you just installed VirtualBox on your Linux Box, but the virtual machine cannot access the host’s USB ports? It’s just a permission issue: simply run VirtualBox as root, or (more correctly) add you user account to the vboxusers group: sudo usermod -aG vboxusers <your username> It’s easy! 🙂


Five complete solutions for email server deploy

For inexperienced or impatient admins! Five complete solutions for rapidly deploy a complete mail server with a single installation. Enjoy! Citadel: Versatile and powerful mail server, written in C.License: GPLv3 iRedMail: Mail server solution based on Postfix and Dovecot.License: GPLv3 Mailcow: Mail server suite based on Dovecot, Postfix and other open source software. Provides a […]