Security Hardening

Common Problems 118503

Ubuntu 16.04 LTS – NTP drift causes clock skew and auth failures – Fix & Prevention

🟠 High   ⏱ 5–30 min  Last verified: 27 October 2020 Affected versions: Ubuntu 16.04 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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Common Problems 117964

Ubuntu 18.04 root partition out of disk space

🟡 Medium   ⏱ 5–30 min  Last verified: 27 October 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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Ubuntu 16.04 — libmediainfo — multiple vulnerabilities (4 CVEs) — patch and remediation guide — diagnosis and fix on Ubuntu 16.04

Ubuntu 16.04 — libmediainfo — multiple vulnerabilities (4 CVEs) — patch and remediation guide

🟡 Medium   ⏱ 10–30 min  Last verified: 27 October 2020 Affected versions: Ubuntu 16.04 (xenial) 📖 ~4 min read  •  Source: Ubuntu Security Notice USN-5237-1 Related CVEs: CVE-2020-15395 CVE-2020-26797 CVE-2019-11372 CVE-2019-11373 Upstream summary: It was discovered that MediaInfoLib incorrectly handled certain specially crafted files. An attacker could possibly use this issue to cause a […]

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How to Configure IIS Web Server on Windows Server 2019 — step-by-step Windows Server 2019 tutorial on Progressive Robot

How to Configure IIS Web Server on Windows Server 2019

How to Configure IIS Web Server on Windows Server 2019 Internet Information Services (IIS) 10 on Windows Server 2019 is a full-featured, modular web server platform supporting HTTP, HTTPS, FTP, FTPS, and WebDAV. IIS powers millions of websites and web applications worldwide and integrates tightly with the .NET framework, ASP.NET Core, PHP, and Node.js via […]

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SLES 15 — libjpeg8 — multiple vulnerabilities (12 CVEs) — patch and remediation guide — diagnosis and fix on SLES 15

SLES 15 — libjpeg8 — multiple vulnerabilities (12 CVEs) — patch and remediation guide

🟠 High   ⏱ 15–60 min  Last verified: 27 October 2020 Affected versions: SLES 15 📖 ~4 min read  •  Source: SUSE advisory SUSE-SU-2021:1957-1 (see also SUSE bugzilla) Related CVEs: CVE-2020-17541 CVE-2019-2201 CVE-2020-35538 CVE-2018-19644 CVE-2014-9092 CVE-2017-15232 CVE-2018-1152 CVE-2018-11813  +4 more Upstream summary: Libjpeg-turbo all version have a stack-based buffer overflow in the "transform" component. A […]

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Common Problems 125053

Oracle Linux 8 – Common Problem 009 – Diagnosis and Fix

🔴 Critical   ⏱ 5–30 min  Last verified: 26 October 2020 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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Common Problems 118399

Ubuntu 16.04 LTS apt Lock Contention During Maintenance

🟡 Medium   ⏱ 5–30 min  Last verified: 26 October 2020 Affected versions: 16.04 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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Common Problems 115557

yum Update Fails on GPG Signature Verification

🟡 Medium   ⏱ 5–30 min  Last verified: 26 October 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 IPv6 on SLES 15 — step-by-step SUSE Linux Enterprise 15 tutorial on Progressive Robot

How to Configure IPv6 on SLES 15

Introduction This tutorial covers How to Configure IPv6 on SLES 15 on SLES 15. SLES 15 (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 15 system is up to date: zypper refresh && […]

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Debian 10 — influxdb — vulnerability — patch and remediation guide — diagnosis and fix on Debian 10

Debian 10 — influxdb — vulnerability — patch and remediation guide

🟢 Low   ⏱ 5–15 min  Last verified: 26 October 2020 Affected versions: Debian 10 (buster) 📖 ~4 min read  •  Source: Debian Security Tracker Related CVEs: CVE-2019-20933 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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