How To Secure Nginx with Let’s Encrypt on Rocky Linux 9
Let’s Encrypt is a Certificate Authority (CA) that provides an accessible way to obtain and install free TLS/SSL certificates, thereby enabling encrypted HTTPS on web servers.
Debian 11 — cacti — multiple vulnerabilities (20 CVEs) — patch and remediation guide
🟠 High ⏱ 15–60 min Last verified: 18 July 2022 Affected versions: Debian 11 (bullseye) 📖 ~4 min read • Source: Debian Security Tracker Related CVEs: CVE-2002-1477 CVE-2002-1478 CVE-2002-1479 CVE-2004-1736 CVE-2004-1737 CVE-2005-10004 CVE-2005-1524 CVE-2005-1525 +12 more Upstream summary: graphs.php in Cacti before 0.6.8 allows remote authenticated Cacti administrators to execute arbitrary commands via shell […]
Debian 11 — exim4 — multiple vulnerabilities (20 CVEs) — patch and remediation guide
🟠 High ⏱ 15–60 min Last verified: 18 July 2022 Affected versions: Debian 11 (bullseye) 📖 ~4 min read • Source: Debian Security Tracker Related CVEs: CVE-2002-1381 CVE-2004-0399 CVE-2004-0400 CVE-2005-0021 CVE-2005-0022 CVE-2010-2023 CVE-2010-2024 CVE-2010-4344 +12 more Upstream summary: Format string vulnerability in daemon.c for Exim 4.x through 4.10, and 3.x through 3.36, allows exim […]
How to Set Up SSH Key Authentication on Debian 11
Introduction This guide explains how to Set Up SSH Key Authentication on Debian 11 on Debian 11 Bullseye. Debian Bullseye uses systemd for service management, nftables as the underlying packet filter (with ufw or iptables front-ends still available), and AppArmor for mandatory access control. Every command is designed for a minimal Debian 11 install with […]
Comment installer et utiliser TimescaleDB sur CentOS 7
L’auteur a choisi le Computer History Museum comme bénéficiaire d’une donation dans le cadre du programme Write for Donations. De nombreuses apps, telles que les systèmes de…
Oracle Linux 8 — ruby:3.1 security, bug fix, and — enhancement update — new behaviour and fixes (ELSA-2024-3546)
🟡 Medium ⏱ 10–30 min Last verified: 17 July 2022 Affected versions: Oracle Linux 8 📖 ~4 min read • Source: ELSA advisory ELSA-2024-3546 Related CVEs: CVE-2024-27281 CVE-2024-27282 CVE-2024-27280 Table of contents Symptom & Impact Environment & Reproduction Root Cause Analysis Quick Triage Step-by-Step Diagnosis Solution – Primary Fix Solution – Alternative Approaches Verification […]
AlmaLinux 8 — gcc-toolset-9-dwz — vulnerability — patch and remediation guide
🟡 Medium ⏱ 10–30 min Last verified: 25 May 2026 Affected versions: AlmaLinux 8 📖 ~4 min read • Source: AlmaLinux ALSA ALBA-2019:3439 Upstream summary: GCC Toolset is a compiler toolset that provides recent versions of development tools. GCC Toolset is an Application Stream packaged as a Software Collection. This enhancement update adds the […]
Debian 11 – SSH login denied after hardening changes
🟠 High ⏱ 5–30 min Last verified: 17 July 2022 Affected versions: Debian 11 📖 ~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 & […]
Debian 11 — slic3r — multiple vulnerabilities (7 CVEs) — patch and remediation guide
🟡 Medium ⏱ 10–30 min Last verified: 17 July 2022 Affected versions: Debian 11 (bullseye) 📖 ~4 min read • Source: Debian Security Tracker Related CVEs: CVE-2020-28590 CVE-2020-28591 CVE-2021-44961 CVE-2021-44962 CVE-2021-45846 CVE-2021-45847 CVE-2022-36788 Upstream summary: An out-of-bounds read vulnerability exists in the Obj File TriangleMesh::TriangleMesh() functionality of Slic3r libslic3r 1.3.0 and Master Commit 92abbc42. […]
How to Install and Configure Drone CI on RHEL 9
Drone CI is an open-source, container-native continuous integration and delivery platform that runs every pipeline step inside an isolated Docker container. It integrates natively with GitHub, Gitea, GitLab, and Bitbucket, making it a lightweight alternative to Jenkins for teams already working with containers. Drone’s configuration lives in a .drone.yml file committed alongside your code, keeping […]