Security Hardening

Oracle Linux 8 — ghostscript — vulnerability — patch and remediation guide — diagnosis and fix on Oracle Linux 8

Oracle Linux 8 — ghostscript — vulnerability — patch and remediation guide (ELSA-2019-0971)

🟠 High   ⏱ 15–60 min  Last verified: 9 December 2020 Affected versions: Oracle Linux 8 📖 ~4 min read  •  Source: ELSA advisory ELSA-2019-0971 Related CVEs: CVE-2019-3839 CVE-2019-3838 CVE-2019-3835 Table of contents Symptom & Impact Environment & Reproduction Root Cause Analysis Quick Triage Step-by-Step Diagnosis Solution – Primary Fix Solution – Alternative Approaches Verification […]

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Common Problems 121553

Debian 9: inode exhaustion on web content volume

🟠 High   ⏱ 5–30 min  Last verified: 8 December 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 & […]

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Oracle Linux 8 — grafana security, bug fix, and — enhancement update — new behaviour and fixes — diagnosis and fix on Oracle Linux 8

Oracle Linux 8 — grafana security, bug fix, and — enhancement update — new behaviour and fixes (ELSA-2021-1859)

🟡 Medium   ⏱ 10–30 min  Last verified: 8 December 2020 Affected versions: Oracle Linux 8 📖 ~4 min read  •  Source: ELSA advisory ELSA-2021-1859 Related CVEs: CVE-2020-27846 CVE-2020-24303 Table of contents Symptom & Impact Environment & Reproduction Root Cause Analysis Quick Triage Step-by-Step Diagnosis Solution – Primary Fix Solution – Alternative Approaches Verification & […]

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

Arch Linux — inetutils — 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-202106-20 Related CVEs: CVE-2020-10188 CVE-2019-0053 Upstream summary: Type: arbitrary code execution. Status: Fixed. Affected: 1.9.4-9. Fixed in: 2.0-1. Group: AVG-1003. Table of contents Symptom & Impact Environment & Reproduction Root […]

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Common Problems 117621

Ubuntu 20.04 LTS – Certbot renewal fails because port 80 is in use – Fix & Prevention

🟡 Medium   ⏱ 5–30 min  Last verified: 8 December 2020 Affected versions: Ubuntu 20.04 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 […]

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How to Set Up TimescaleDB on SLES 12 — step-by-step SUSE Linux Enterprise 12 tutorial on Progressive Robot

How to Set Up TimescaleDB on SLES 12

Introduction This tutorial covers How to Set Up TimescaleDB on SLES 12 on SLES 12. SLES 12 (SUSE Linux Enterprise Server 16) is SUSE’s enterprise-grade Linux distribution. It uses the zypper package manager, AppArmor for mandatory access control, and systemctl for service management. Prerequisites Ensure your SLES 12 system is up to date: zypper refresh […]

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Common Problems 115038

RHEL 8 tuned Profile Causes Unexpected CPU Throttling

🟡 Medium   ⏱ 5–30 min  Last verified: 8 December 2020 📖 ~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 […]

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How to Configure PowerVS Network Connectivity on IBM AIX 7.1 — step-by-step IBM AIX 7.1 tutorial on Progressive Robot

How to Configure PowerVS Network Connectivity on IBM AIX 7.1

Introduction IBM AIX 7.1 is the latest release of IBM’s enterprise-grade UNIX operating system, running on IBM Power Systems hardware. Known for its reliability, security, and performance in mission-critical environments, AIX 7.1 introduces enhanced virtualization, security hardening, and cloud integration features. This guide covers how to configure powervs network connectivity on ibm aix 7.1 on […]

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FreeBSD 12 — sqlite — multiple vulnerabilities (20 CVEs) — patch and remediation guide — diagnosis and fix on FreeBSD 12

FreeBSD 12 — sqlite — multiple vulnerabilities (20 CVEs) — patch and remediation guide

🟠 High   ⏱ 15–60 min  Last verified: 8 December 2020 Affected versions: FreeBSD 12 📖 ~4 min read  •  Source: FreeBSD VuXML VuXML topic: SQLite < 3.50.3 — CWE-190 Integer Overflow or Wraparound in FTS5 module Related CVEs: CVE-2015-3414 CVE-2015-3415 CVE-2015-3416 CVE-2016-6153 CVE-2017-10989 CVE-2018-8740 CVE-2019-5018 CVE-2020-11655  +12 more Upstream summary: https://github.com/google/security-research/security/advisories/GHSA-v2c8-vqqp-hv3g reports: An integer […]

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How to Configure Traefik Reverse Proxy on Oracle Linux 8 — step-by-step Oracle Linux 8 tutorial on Progressive Robot

How to Configure Traefik Reverse Proxy on Oracle Linux 8

Introduction Setting up configure traefik reverse proxy on oracle linux 8 on a Oracle Linux 8 server is a common task for system administrators, DevOps engineers, and site reliability engineers. This guide explains how to Configure Traefik Reverse Proxy on Oracle Linux 8, with all the commands you need, the SELinux and firewalld considerations to […]

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