October 2023 - Page 18 of 76

How to Install and Use tmux on Debian 12 — step-by-step Debian 12 tutorial on Progressive Robot

How to Install and Use tmux on Debian 12

Introduction Deploying install and use tmux on debian 12 on a Debian 12 Bookworm machine is straightforward thanks to Debian’s policy-compliant packaging. Unlike rpm-based distributions, Debian stores configuration helpers in /etc/default/, uses update-rc.d for older init scripts, and provides dpkg-reconfigure for interactive package configuration. This tutorial stays on the systemd path throughout. Prerequisites Before you […]

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Oracle Linux 9 — linux-firmware security, bug fix, and — enhancement update — new behaviour and fixes — diagnosis and fix on Oracle Linux 9

Oracle Linux 9 — linux-firmware security, bug fix, and — enhancement update — new behaviour and fixes (ELSA-2023-6595)

🟠 High   ⏱ 15–60 min  Last verified: 24 October 2023 Affected versions: Oracle Linux 9 📖 ~4 min read  •  Source: ELSA advisory ELSA-2023-6595 Related CVEs: CVE-2022-40964 CVE-2022-27635 CVE-2023-20569 CVE-2022-38076 CVE-2022-36351 CVE-2022-46329 Table of contents Symptom & Impact Environment & Reproduction Root Cause Analysis Quick Triage Step-by-Step Diagnosis Solution – Primary Fix Solution – […]

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Windows Server 2022 — KB5029653 — multiple vulnerabilities (2 CVEs) — patch and remediation guide — diagnosis and fix on Windows Server 2022

Windows Server 2022 — KB5029653 — multiple vulnerabilities (2 CVEs) — patch and remediation guide

🟠 High   ⏱ 15–60 min  Last verified: 25 May 2026 Affected versions: Windows Server 2022 📖 ~4 min read  •  Source: Microsoft KB5029653 • MSRC update-guide entry Related CVEs: CVE-2023-36873 CVE-2023-36899 Affected components: Microsoft .NET Framework 3.5 AND 4.8 on Windows Server 2022 Table of contents Symptom & Impact Environment & Reproduction Root Cause […]

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How to Set Up the ELK Stack on CentOS Stream 9 — step-by-step CentOS Stream 9 tutorial on Progressive Robot

How to Set Up the ELK Stack on CentOS Stream 9

Introduction This tutorial demonstrates how to Set Up the ELK Stack on CentOS Stream 9 on CentOS Stream 9. It is written for administrators who want a repeatable, well-explained walkthrough that goes beyond a bare command list and explains each configuration choice. Every command is tested against a freshly registered CentOS Stream 9 system with […]

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Alpine Linux edge — ruby-activesupport — multiple vulnerabilities (2 CVEs) — patch and remediation guide — diagnosis and fix on Alpine Linux edge

Alpine Linux edge — ruby-activesupport — multiple vulnerabilities (2 CVEs) — patch and remediation guide

🟡 Medium   ⏱ 10–30 min  Last verified: 25 May 2026 Affected versions: Alpine Linux edge / fixed in 7.0.4.3-r0 📖 ~4 min read  •  Source: Alpine secdb entry — ruby-activesupport 7.0.4.3-r0 Related CVEs: CVE-2023-28120 CVE-2023-22796 Upstream summary: Alpine community repository for vedge ships ruby-activesupport 7.0.4.3-r0 which addresses CVE-2023-28120. Table of contents Symptom & Impact […]

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Common Problems 120019

Debian 12: PostgreSQL not starting after config edit

🔴 Critical   ⏱ 5–30 min  Last verified: 24 October 2023 Affected versions: Debian 12 📖 ~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 & […]

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NetBSD 9.4 — firefox31 — vulnerability — patch and remediation guide — diagnosis and fix on NetBSD 9.4

NetBSD 9.4 — firefox31 — vulnerability — patch and remediation guide

🟡 Medium   ⏱ 10–30 min  Last verified: 25 May 2026 Affected versions: NetBSD 9.4 📖 ~4 min read  •  Source: pkgsrc audit-packages entry Upstream summary: pkgsrc audit-packages flagged firefox31>=31<31.3 for vulnerability class 'multiple-vulnerabilities'. Reference: https://www.mozilla.org/en-US/security/known-vulnerabilities/firefox-esr/#firefoxesr31.3 Table of contents Symptom & Impact Environment & Reproduction Root Cause Analysis Quick Triage Step-by-Step Diagnosis Solution – Primary […]

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How to Set Up TimescaleDB on Oracle Linux 9 — step-by-step Oracle Linux 9 tutorial on Progressive Robot

How to Set Up TimescaleDB on Oracle Linux 9

Introduction How to Set Up TimescaleDB on Oracle Linux 9 on Oracle Linux 9 provides administrators with a robust, enterprise-ready workflow that integrates cleanly with systemd, SELinux, firewalld, and the modern AppStream module system. In this tutorial we will walk through every step required, from package installation to verification, so that the resulting configuration is […]

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