Security Hardening

Oracle Linux 8 — Unbreakable Enterprise kernel — vulnerability — patch and remediation guide — diagnosis and fix on Oracle Linux 8

Oracle Linux 8 — Unbreakable Enterprise kernel — vulnerability — patch and remediation guide (ELSA-2021-9474)

  • January 17, 2021
  • Linux
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🟠 High   ⏱ 15–60 min  Last verified: 17 January 2021 Affected versions: Oracle Linux 8 📖 ~4 min read  •  Source: ELSA advisory ELSA-2021-9474 Related CVEs: CVE-2021-3743 CVE-2021-40490 CVE-2021-3739 CVE-2021-37159 CVE-2021-38198 Table of contents Symptom & Impact Environment & Reproduction Root Cause Analysis Quick Triage Step-by-Step Diagnosis Solution – Primary Fix Solution – Alternative […]

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IBM AIX 7.1 — CVE-2020-4762 — vulnerability — patch and remediation guide — diagnosis and fix on IBM AIX 7.1

IBM AIX 7.1 — CVE-2020-4762 — vulnerability — patch and remediation guide

🟠 High   ⏱ 30–90 min  Last verified: 17 January 2021 Affected versions: IBM AIX 7.1 📖 ~4 min read  •  Source: NVD CVE-2020-4762, IBM Support Bulletin CVE: CVE-2020-4762 NVD summary: IBM Sterling B2B Integrator Standard Edition 5.2.0.0 through 5.2.6.5_2, 6.0.0.0 through 6.0.3.2, and 6.1.0.0 could allow an authenticated user to create a privileged account […]

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Common Problems 125104

Oracle Linux 8 – Common Problem 014 – Diagnosis and Fix

  • January 16, 2021
  • Linux
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🟡 Medium   ⏱ 5–30 min  Last verified: 16 January 2021 Affected versions: Oracle Linux 8 📖 ~3 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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Alpine Linux edge — cpio — multiple vulnerabilities (4 CVEs) — patch and remediation guide — diagnosis and fix on Alpine Linux edge

Alpine Linux edge — cpio — multiple vulnerabilities (4 CVEs) — patch and remediation guide

  • January 16, 2021
  • Linux
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🟡 Medium   ⏱ 10–30 min  Last verified: 25 May 2026 Affected versions: Alpine Linux edge / fixed in 2.13-r2 📖 ~4 min read  •  Source: Alpine secdb entry — cpio 2.13-r2 Related CVEs: CVE-2021-38185 CVE-2015-1197 CVE-2019-14866 CVE-2016-2037 Upstream summary: Alpine community repository for vedge ships cpio 2.13-r2 which addresses CVE-2021-38185. Table of contents Symptom […]

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Common Problems 119148

Locale Misconfiguration Produces perl Warnings on Ubuntu 14.04

🟡 Medium   ⏱ 5–30 min  Last verified: 16 January 2021 📖 ~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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Common Problems 115473

RHEL 7 – Incorrect fstab Entry Sends Host to Emergency Mode

  • January 16, 2021
  • Linux
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🟡 Medium   ⏱ 5–30 min  Last verified: 16 January 2021 📖 ~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 Harbor Container Registry on SLES 12 — step-by-step SUSE Linux Enterprise 12 tutorial on Progressive Robot

How to Configure Harbor Container Registry on SLES 12

Introduction This tutorial covers How to Configure Harbor Container Registry 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 […]

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FreeBSD 12 — sympa — multiple vulnerabilities (5 CVEs) — patch and remediation guide — diagnosis and fix on FreeBSD 12

FreeBSD 12 — sympa — multiple vulnerabilities (5 CVEs) — patch and remediation guide

  • January 16, 2021
  • BSD
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🟡 Medium   ⏱ 10–30 min  Last verified: 16 January 2021 Affected versions: FreeBSD 12 📖 ~4 min read  •  Source: FreeBSD VuXML VuXML topic: sympa — Inappropriate use of the cookie parameter can be a security threat. This parameter may also not provide sufficient security. Related CVEs: CVE-2005-0073 CVE-2012-2352 CVE-2015-1306 CVE-2020-29668 CVE-2020-9369 Upstream summary: […]

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Common Problems 112570

Windows Server 2019 Tiered Storage Spaces Not Rebalancing Hot Data Correctly – Fix & Prevention

🟡 Medium   ⏱ 5–30 min  Last verified: 16 January 2021 Affected versions: Windows Server 2019 📖 ~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 — icingaweb — vulnerability — patch and remediation guide — diagnosis and fix on FreeBSD 12

FreeBSD 12 — icingaweb — vulnerability — patch and remediation guide

  • January 16, 2021
  • BSD
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🟢 Low   ⏱ 5–15 min  Last verified: 16 January 2021 Affected versions: FreeBSD 12 📖 ~4 min read  •  Source: FreeBSD VuXML VuXML topic: Icinga Web 2 — directory traversal vulnerability Related CVEs: CVE-2020-24368 Upstream summary: Icinga development team reports: CVE-2020-24368 Icinga Icinga Web2 2.0.0 through 2.6.4, 2.7.4 and 2.8.2 has a Directory Traversal […]

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