Systemd Services

How to Install Lua on FreeBSD 12 — step-by-step FreeBSD 12 tutorial on Progressive Robot

How to Install Lua on FreeBSD 12

Introduction This guide explains how to Install Lua on FreeBSD 12 on FreeBSD 12. FreeBSD uses the pkg(8) binary package manager, rc.conf(5) for service startup configuration, and pf(4) as its primary packet filter. There is no SELinux or AppArmor — instead, FreeBSD provides the MAC (Mandatory Access Control) framework and Capsicum for fine-grained privilege separation. […]

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Debian 10 — unbound — multiple vulnerabilities (2 CVEs) — patch and remediation guide — diagnosis and fix on Debian 10

Debian 10 — unbound — multiple vulnerabilities (2 CVEs) — patch and remediation guide

🟢 Low   ⏱ 5–15 min  Last verified: 29 October 2020 Affected versions: Debian 10 (buster) 📖 ~4 min read  •  Source: Debian Security Tracker Related CVEs: CVE-2019-16866 CVE-2020-12662 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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Alpine Linux edge — openjdk11 — multiple vulnerabilities (20 CVEs) — patch and remediation guide — diagnosis and fix on Alpine Linux edge

Alpine Linux edge — openjdk11 — multiple vulnerabilities (20 CVEs) — patch and remediation guide

🟠 High   ⏱ 15–60 min  Last verified: 25 May 2026 Affected versions: Alpine Linux edge / fixed in 11.0.9_p11-r0 📖 ~4 min read  •  Source: Alpine secdb entry — openjdk11 11.0.9_p11-r0 Related CVEs: CVE-2020-14779 CVE-2020-14781 CVE-2020-14782 CVE-2020-14792 CVE-2020-14796 CVE-2020-14797 CVE-2020-14798 CVE-2020-14803  +12 more Upstream summary: Alpine community repository for vedge ships openjdk11 11.0.9_p11-r0 which […]

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Debian 10 — firefox-esr — multiple vulnerabilities (20 CVEs) — patch and remediation guide — diagnosis and fix on Debian 10

Debian 10 — firefox-esr — multiple vulnerabilities (20 CVEs) — patch and remediation guide

🟠 High   ⏱ 15–60 min  Last verified: 29 October 2020 Affected versions: Debian 10 (buster) 📖 ~4 min read  •  Source: Debian Security Tracker Related CVEs: CVE-2019-9811 CVE-2019-9812 CVE-2019-11757 CVE-2019-17005 CVE-2019-17026 CVE-2019-20503 CVE-2020-6831 CVE-2020-12399  +12 more Table of contents Symptom & Impact Environment & Reproduction Root Cause Analysis Quick Triage Step-by-Step Diagnosis Solution – […]

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Oracle Linux 8 — maven:3.6 security and — enhancement update — new behaviour and fixes — diagnosis and fix on Oracle Linux 8

Oracle Linux 8 — maven:3.6 security and — enhancement update — new behaviour and fixes (ELSA-2022-1860)

🟡 Medium   ⏱ 10–30 min  Last verified: 28 October 2020 Affected versions: Oracle Linux 8 📖 ~4 min read  •  Source: ELSA advisory ELSA-2022-1860 Related CVEs: CVE-2020-13956 Table of contents Symptom & Impact Environment & Reproduction Root Cause Analysis Quick Triage Step-by-Step Diagnosis Solution – Primary Fix Solution – Alternative Approaches Verification & Acceptance […]

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Common Problems 117411

Ubuntu 20.04 LTS apt Lock Contention During Auto Updates

🟡 Medium   ⏱ 5–30 min  Last verified: 28 October 2020 Affected versions: 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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FreeBSD 12 — payara — multiple vulnerabilities (15 CVEs) — patch and remediation guide — diagnosis and fix on FreeBSD 12

FreeBSD 12 — payara — multiple vulnerabilities (15 CVEs) — patch and remediation guide

🟠 High   ⏱ 15–60 min  Last verified: 28 October 2020 Affected versions: FreeBSD 12 📖 ~4 min read  •  Source: FreeBSD VuXML VuXML topic: Payara — path trasversal flaw via either loc/con parameters in Eclipse Mojarra Related CVEs: CVE-2016-1000031 CVE-2016-5528 CVE-2017-12615 CVE-2017-3239 CVE-2017-3247 CVE-2017-3249 CVE-2017-3250 CVE-2018-14371  +7 more Upstream summary: Payara Releases reports: The […]

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How to Install Netdata on Oracle Linux 8 — step-by-step Oracle Linux 8 tutorial on Progressive Robot

How to Install Netdata on Oracle Linux 8

Introduction How to Install Netdata on Oracle Linux 8 on Oracle Linux 8 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 reproducible […]

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Oracle Linux 8 — varnish:6 security, bug fix, and — enhancement update — new behaviour and fixes — diagnosis and fix on Oracle Linux 8

Oracle Linux 8 — varnish:6 security, bug fix, and — enhancement update — new behaviour and fixes (ELSA-2020-4756)

🟡 Medium   ⏱ 10–30 min  Last verified: 27 October 2020 Affected versions: Oracle Linux 8 📖 ~4 min read  •  Source: ELSA advisory ELSA-2020-4756 Related CVEs: CVE-2019-20637 CVE-2019-15892 CVE-2020-11653 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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How to Set Up the ELK Stack on Oracle Linux 8 — step-by-step Oracle Linux 8 tutorial on Progressive Robot

How to Set Up the ELK Stack on Oracle Linux 8

Introduction This tutorial demonstrates how to Set Up the ELK Stack on Oracle Linux 8 on Oracle Linux 8. 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 Oracle Linux 8 system with […]

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