Linux

Arch Linux — lib32-freetype2 — multiple vulnerabilities (3 CVEs) — patch and remediation guide — diagnosis and fix on Arch Linux

Arch Linux — lib32-freetype2 — multiple vulnerabilities (3 CVEs) — patch and remediation guide

🟠 High   ⏱ 15–60 min  Last verified: 25 May 2026 Affected versions: Arch Linux (rolling release) 📖 ~4 min read  •  Source: Arch ASA ASA-202010-11 Related CVEs: CVE-2020-15999 CVE-2017-8287 CVE-2017-8105 Upstream summary: Type: arbitrary code execution. Status: Fixed. Affected: 2.10.3-1. Fixed in: 2.10.4-1. Group: AVG-1255. Table of contents Symptom & Impact Environment & Reproduction […]

Read more
How To Use Port Knocking to Hide your SSH Daemon from Attackers on Ubuntu — step-by-step Linux tutorial on Progressive Robot

How To Use Port Knocking to Hide your SSH Daemon from Attackers on Ubuntu

Port knocking is a method of protecting your services behind a firewall until connection attempts are made to a specific sequence of ports in a certain amount of time. The firewall rules are then modified to allow access to the service and the user can connect as normal. In this article, we will discuss how to implement port knocking to add an extra layer of protection to your SSH daemon in order to dissuade attackers.

Read more
How To Install MediaWiki on Ubuntu 14.04 — step-by-step Linux tutorial on Progressive Robot

How To Install MediaWiki on Ubuntu 14.04

MediaWiki is a PHP wiki package, originally intended for use on Wikipedia, which allows anyone to create their own personal wiki site. This tutorial goes through how to set up MediaWiki on a Ubuntu 14.04 Droplet.

Read more
How To Install and Configure Ghost on CentOS 7 — step-by-step Linux tutorial on Progressive Robot

How To Install and Configure Ghost on CentOS 7

Ghost is a light-weight open-source blogging platform which is easy to use. Ghost is fully customizable, with many themes available. In this tutorial, you’ll set up Ghost on CentOS 7. You’ll also configure Nginx to proxy requests to Ghost, and keep…

Read more
Arch Linux — gnupg — multiple vulnerabilities (2 CVEs) — patch and remediation guide — diagnosis and fix on Arch Linux

Arch Linux — gnupg — multiple vulnerabilities (2 CVEs) — patch and remediation guide

🔴 Critical   ⏱ 15–90 min  Last verified: 25 May 2026 Affected versions: Arch Linux (rolling release) 📖 ~4 min read  •  Source: Arch ASA ASA-202009-5 Related CVEs: CVE-2020-25125 CVE-2018-12020 Upstream summary: Type: arbitrary code execution. Status: Fixed. Affected: 2.2.21-2. Fixed in: 2.2.23-1. Group: AVG-1218. Table of contents Symptom & Impact Environment & Reproduction Root […]

Read more
Ubuntu 14.04 — intel-microcode — multiple vulnerabilities (20 CVEs) — patch and remediation guide — diagnosis and fix on Ubuntu 14.04

Ubuntu 14.04 — intel-microcode — multiple vulnerabilities (20 CVEs) — patch and remediation guide

🟠 High   ⏱ 15–60 min  Last verified: 25 October 2020 Affected versions: Ubuntu 14.04 (trusty) 📖 ~4 min read  •  Source: Ubuntu Security Notice USN-4985-1 Related CVEs: CVE-2020-24511 CVE-2020-24512 CVE-2020-24513 CVE-2020-24489 https://launchpad.net/bugs/1903883 CVE-2020-8695 CVE-2020-8696 CVE-2020-8698  +12 more Upstream summary: It was discovered that some Intel processors may not properly invalidate cache entries used by […]

Read more
Oracle Linux 8 — container-tools:ol8 security, bug fix, and — enhancement update — new behaviour and fixes — diagnosis and fix on Oracle Linux 8

Oracle Linux 8 — container-tools:ol8 security, bug fix, and — enhancement update — new behaviour and fixes (ELSA-2023-2758)

🟡 Medium   ⏱ 10–30 min  Last verified: 24 October 2020 Affected versions: Oracle Linux 8 📖 ~4 min read  •  Source: ELSA advisory ELSA-2023-2758 Related CVEs: CVE-2022-30633 CVE-2022-27664 CVE-2022-30632 CVE-2022-30630 CVE-2022-30635 CVE-2022-1962 Table of contents Symptom & Impact Environment & Reproduction Root Cause Analysis Quick Triage Step-by-Step Diagnosis Solution – Primary Fix Solution – […]

Read more
Common Problems 121561

Debian 9 – systemd Journal Consumes Disk Space – Retention and Vacuum Strategy

🟡 Medium   ⏱ 5–30 min  Last verified: 24 October 2020 Affected versions: Debian 9 📖 ~1 min read Table of contents Symptom & Impact Environment & Reproduction Root Cause Analysis Quick Triage Step-by-Step Diagnosis Solution – Primary Fix Solution – Alternative Approaches Verification & Acceptance Criteria Rollback Plan Prevention & Hardening Related Errors & […]

Read more
CHAT