How to Get Started with FreeBSD
FreeBSD is a secure, high performance operating system that is suitable for a variety of server roles. In this guide, we will cover some basic information about how to get started with a server running FreeBSD 11.2.
Ubuntu 14.04 LTS repository 404 errors after end-of-life
🟡 Medium ⏱ 5–30 min Last verified: 18 August 2019 📖 ~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 & Cross-Refs References & Further […]
Ubuntu 14.04 LTS apt repositories return 404 after EOL
🟠 High ⏱ 5–30 min Last verified: 18 August 2019 Affected versions: 14.04 LTS 📖 ~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 & […]
How to Configure the APT Package Manager on Debian 9
Introduction Debian 9 Stretch is built around the ethos of stability and free software. Setting up configure the apt package manager on debian 9 on Stretch leverages the same proven Debian packaging system that powers millions of servers worldwide, while benefiting from the latest upstream releases included in the Stretch freeze. Follow each step carefully […]
Ubuntu 18.04 — pango1.0 — vulnerability — patch and remediation guide
🟢 Low ⏱ 5–15 min Last verified: 18 August 2019 Affected versions: Ubuntu 18.04 (bionic) 📖 ~4 min read • Source: Ubuntu Security Notice USN-3750-1 Related CVEs: CVE-2018-15120 Upstream summary: Jeffrey M. discovered that Pango incorrectly handled certain files. An attacker could possibly use this issue to cause a denial of service. Table of […]
openSUSE Tumbleweed — libykcs11 — multiple vulnerabilities (2 CVEs) — patch and remediation guide
🟠 High ⏱ 15–60 min Last verified: 25 May 2026 Affected versions: openSUSE Tumbleweed 📖 ~4 min read • Source: SUSE advisory openSUSE-SU-2018:2623-1 (see also SUSE bugzilla) Related CVEs: CVE-2018-14779 CVE-2018-14780 Upstream summary: A buffer overflow issue was discovered in the Yubico-Piv 1.5.0 smartcard driver. The file lib/ykpiv.c contains the following code in the […]
SLES 15 — libneon27 — multiple vulnerabilities (2 CVEs) — patch and remediation guide
🟡 Medium ⏱ 10–30 min Last verified: 18 August 2019 Affected versions: SLES 15 📖 ~4 min read • Source: SUSE advisory SUSE-SR:2009:018 (see also SUSE bugzilla) Related CVEs: CVE-2009-2473 CVE-2009-2474 Upstream summary: neon before 0.28.6, when expat is used, does not properly detect recursion during entity expansion, which allows context-dependent attackers to cause […]
UFW Essentials: Common Firewall Rules and Commands for Linux Security
Master the essentials of UFW with this guide to common firewall rules and commands. Learn how to configure, enable, and secure your Linux system using UFW.
SLES 15 — enigmail — multiple vulnerabilities (5 CVEs) — patch and remediation guide
🟡 Medium ⏱ 10–30 min Last verified: 18 August 2019 Affected versions: SLES 15 📖 ~4 min read • Source: SUSE advisory openSUSE-SU-2018:1329-1 (see also SUSE bugzilla) Related CVEs: CVE-2017-17688 CVE-2017-17689 CVE-2018-12019 CVE-2014-5369 CVE-2019-12269 Upstream summary: The OpenPGP specification allows a Cipher Feedback Mode (CFB) malleability-gadget attack that can indirectly lead to plaintext exfiltration, […]
Arch Linux — ettercap — multiple vulnerabilities (2 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-201709-16 Related CVEs: CVE-2017-8366 CVE-2017-6430 Upstream summary: Type: multiple issues. Status: Fixed. Affected: 0.8.2-4. Fixed in: 0.8.2-5. Group: AVG-212. Table of contents Symptom & Impact Environment & Reproduction Root Cause […]
