Security Hardening

Common Problems 124097

Oracle Linux 10 SSH Public Key Login Fails Due to Permission and SELinux Context Issues

🟠 High   ⏱ 5–30 min  Last verified: 9 August 2025 Affected versions: Oracle Linux 10 📖 ~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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Common Problems 124028

Oracle Linux 10 – firewalld Rules Not Persisting Across Reload – Policy Repair

🟡 Medium   ⏱ 5–30 min  Last verified: 9 August 2025 Affected versions: Oracle Linux 10 📖 ~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 10.0 — go124 — multiple vulnerabilities (20 CVEs) — patch and remediation guide — diagnosis and fix on NetBSD 10.0

NetBSD 10.0 — go124 — multiple vulnerabilities (20 CVEs) — patch and remediation guide

🟡 Medium   ⏱ 10–30 min  Last verified: 25 May 2026 Affected versions: NetBSD 10.0 📖 ~4 min read  •  Source: pkgsrc audit-packages entry Related CVEs: CVE-2025-4673 CVE-2025-22874 CVE-2025-4674 CVE-2024-8244 CVE-2025-47907 CVE-2025-47906 CVE-2025-47910 CVE-2025-22871  +12 more Upstream summary: pkgsrc audit-packages flagged go124<1.24.4 for vulnerability class 'http-header-injection'. Reference: https://nvd.nist.gov/vuln/detail/CVE-2025-4673 Table of contents Symptom & Impact Environment […]

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How to Monitor MySQL with PMM on Oracle Linux 10 — step-by-step Oracle Linux 10 tutorial on Progressive Robot

How to Monitor MySQL with PMM on Oracle Linux 10

Introduction How to Monitor MySQL with PMM on Oracle Linux 10 on Oracle Linux 10 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 […]

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Common Problems 114637

Rsyslog Not Forwarding Logs to Remote Collector on RHEL 9

🟡 Medium   ⏱ 5–30 min  Last verified: 9 August 2025 📖 ~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 Tune PostgreSQL Performance on RHEL 10 — step-by-step RHEL 10 tutorial on Progressive Robot

How to Tune PostgreSQL Performance on RHEL 10

Introduction RHEL 10 ships with a stable, security-hardened base that makes deploying tune postgresql performance both straightforward and auditable. This tutorial covers the complete procedure for how to Tune PostgreSQL Performance on RHEL 10, including dnf module streams where applicable, systemd unit management, and the firewalld rules required for network-facing services. Prerequisites The procedure assumes […]

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NetBSD 10.0 — dspam — vulnerability — patch and remediation guide — diagnosis and fix on NetBSD 10.0

NetBSD 10.0 — dspam — vulnerability — patch and remediation guide

🟡 Medium   ⏱ 10–30 min  Last verified: 25 May 2026 Affected versions: NetBSD 10.0 📖 ~4 min read  •  Source: pkgsrc audit-packages entry Related CVEs: CVE-2007-6418 Upstream summary: pkgsrc audit-packages flagged dspam<3.8.0 for vulnerability class 'password-exposure'. Reference: https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2007-6418 Table of contents Symptom & Impact Environment & Reproduction Root Cause Analysis Quick Triage Step-by-Step Diagnosis […]

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NetBSD 10.0 — squidGuard — multiple vulnerabilities (3 CVEs) — patch and remediation guide — diagnosis and fix on NetBSD 10.0

NetBSD 10.0 — squidGuard — multiple vulnerabilities (3 CVEs) — patch and remediation guide

🟠 High   ⏱ 15–60 min  Last verified: 25 May 2026 Affected versions: NetBSD 10.0 📖 ~4 min read  •  Source: pkgsrc audit-packages entry Related CVEs: CVE-2009-3826 CVE-2015-8936 CVE-2009-3700 Upstream summary: pkgsrc audit-packages flagged squidGuard-[0-9]* for vulnerability class 'remote-security-bypass'. Reference: https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2009-3826 Table of contents Symptom & Impact Environment & Reproduction Root Cause Analysis Quick Triage […]

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Common Problems 116485

Ubuntu 24.04 LTS – time drift causes TLS and authentication failures – Fix & Prevention

🟠 High   ⏱ 5–30 min  Last verified: 9 August 2025 Affected versions: Ubuntu 24.04 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 — linux-rl9-sqlite — multiple vulnerabilities (2 CVEs) — patch and remediation guide — diagnosis and fix on FreeBSD 12

FreeBSD 12 — linux-rl9-sqlite — multiple vulnerabilities (2 CVEs) — patch and remediation guide

🟢 Low   ⏱ 5–15 min  Last verified: 9 August 2025 Affected versions: FreeBSD 12 📖 ~4 min read  •  Source: FreeBSD VuXML VuXML topic: sqlite — Integer Truncation on SQLite Related CVEs: CVE-2024-0232 CVE-2025-6965 Upstream summary: [email protected] reports: There exists a vulnerability in SQLite versions before 3.50.2 where the number of aggregate terms could […]

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