Security Hardening

SLES 12 — libEMF1 — multiple vulnerabilities (5 CVEs) — patch and remediation guide — diagnosis and fix on SLES 12

SLES 12 — libEMF1 — multiple vulnerabilities (5 CVEs) — patch and remediation guide

🟠 High   ⏱ 15–60 min  Last verified: 22 December 2020 Affected versions: SLES 12 📖 ~4 min read  •  Source: SUSE advisory SUSE-SU-2020:1621-1 (see also SUSE bugzilla) Related CVEs: CVE-2020-11865 CVE-2020-11866 CVE-2020-13999 CVE-2020-11863 CVE-2020-11864 Upstream summary: libEMF (aka ECMA-234 Metafile Library) through 1.0.11 allows out-of-bounds memory access. Table of contents Symptom & Impact Environment […]

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Common Problems 115053

RHEL 8 tuned profile does not persist after reboot

🟡 Medium   ⏱ 5–30 min  Last verified: 22 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 Install Minio as S3-Compatible Storage on Debian 9 — step-by-step Debian 9 tutorial on Progressive Robot

How to Install Minio as S3-Compatible Storage on Debian 9

Introduction Debian 9 Stretch is built around the ethos of stability and free software. Setting up install minio as s3-compatible storage on debian 9 on Stretch leverages the same proven Debian packaging system that powers millions of servers worldwide, while benefiting from the latest upstream releases included in the Stretch freeze. Follow each step carefully […]

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openSUSE Tumbleweed — libvpx7 — vulnerability — patch and remediation guide — diagnosis and fix on openSUSE Tumbleweed

openSUSE Tumbleweed — libvpx7 — vulnerability — patch and remediation guide

🟡 Medium   ⏱ 10–30 min  Last verified: 25 May 2026 Affected versions: openSUSE Tumbleweed 📖 ~4 min read  •  Source: SUSE advisory openSUSE-SU-2020:0680-1 (see also SUSE bugzilla) Related CVEs: CVE-2020-0034 Upstream summary: In vp8_decode_frame of decodeframe.c, there is a possible out of bounds read due to improper input validation. This could lead to remote […]

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Oracle Linux 8 — httpd:2.4 security, bug fix, and — enhancement update — new behaviour and fixes — diagnosis and fix on Oracle Linux 8

Oracle Linux 8 — httpd:2.4 security, bug fix, and — enhancement update — new behaviour and fixes (ELSA-2020-4751)

🟡 Medium   ⏱ 10–30 min  Last verified: 21 December 2020 Affected versions: Oracle Linux 8 📖 ~4 min read  •  Source: ELSA advisory ELSA-2020-4751 Related CVEs: CVE-2019-10082 CVE-2018-17189 CVE-2020-1927 CVE-2019-10081 CVE-2019-10097 CVE-2019-10092 Table of contents Symptom & Impact Environment & Reproduction Root Cause Analysis Quick Triage Step-by-Step Diagnosis Solution – Primary Fix Solution – […]

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Common Problems 121681

Debian 9 – Fail2ban Not Banning with nftables Backend – Jail Action Fix

🟡 Medium   ⏱ 5–30 min  Last verified: 21 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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Common Problems 112604

Windows Server 2019 — RID master pool exhaustion approaching: new objects refused soon — Fix & Prevention

🟠 High   ⏱ 5–30 min  Last verified: 21 December 2020 Affected versions: Windows Server 2019 📖 ~2 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 Terraform on Oracle Linux 8 — step-by-step Oracle Linux 8 tutorial on Progressive Robot

How to Set Up Terraform on Oracle Linux 8

Introduction Oracle Linux 8 ships with a stable, security-hardened base that makes deploying set up terraform on oracle linux 8 both straightforward and auditable. This tutorial covers the complete procedure for how to Set Up Terraform on Oracle Linux 8, including dnf module streams where applicable, systemd unit management, and the firewalld rules required for […]

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