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Ubuntu 18.04 — etcd — multiple vulnerabilities (5 CVEs) — patch and remediation guide — diagnosis and fix on Ubuntu 18.04

Ubuntu 18.04 — etcd — multiple vulnerabilities (5 CVEs) — patch and remediation guide

🟡 Medium   ⏱ 10–30 min  Last verified: 3 March 2021 Affected versions: Ubuntu 18.04 (bionic) 📖 ~4 min read  •  Source: Ubuntu Security Notice USN-6189-1 Related CVEs: CVE-2021-28235 CVE-2020-15106 CVE-2020-15112 CVE-2020-15113 CVE-2020-15114 Upstream summary: It was discovered that etcd leaked credentials when debugging was enabled. This allowed remote attackers to discover etcd authentication credentials […]

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

Oracle Linux 8 — GNOME security, bug fix, and — enhancement update — new behaviour and fixes (ELSA-2021-4381)

🟡 Medium   ⏱ 10–30 min  Last verified: 3 March 2021 Affected versions: Oracle Linux 8 📖 ~4 min read  •  Source: ELSA advisory ELSA-2021-4381 Related CVEs: CVE-2021-30682 CVE-2021-1871 CVE-2020-24870 CVE-2021-1765 CVE-2021-1789 CVE-2021-30744 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 119138

NFS Mount in fstab Delays or Breaks Boot on Ubuntu 14.04

🟡 Medium   ⏱ 5–30 min  Last verified: 3 March 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 117929

Ubuntu 18.04 LTS Time Drift Breaks Kerberos and TLS

🟠 High   ⏱ 5–30 min  Last verified: 3 March 2021 Affected versions: 18.04 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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How to Configure Traefik Reverse Proxy on SLES 12 — step-by-step SUSE Linux Enterprise 12 tutorial on Progressive Robot

How to Configure Traefik Reverse Proxy on SLES 12

Introduction This tutorial covers How to Configure Traefik Reverse Proxy 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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Oracle Linux 8 — virt:ol and virt-devel:ol — vulnerability — patch and remediation guide — diagnosis and fix on Oracle Linux 8

Oracle Linux 8 — virt:ol and virt-devel:ol — vulnerability — patch and remediation guide (ELSA-2021-5238)

🟢 Low   ⏱ 5–15 min  Last verified: 3 March 2021 Affected versions: Oracle Linux 8 📖 ~4 min read  •  Source: ELSA advisory ELSA-2021-5238 Related CVEs: CVE-2021-20257 CVE-2021-3930 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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Common Problems 112968

Windows Server 2016 – Display miniport TDR resets freeze RDP sessions – Fix and Prevention

🟡 Medium   ⏱ 5–30 min  Last verified: 3 March 2021 Affected versions: Windows Server 2016 📖 ~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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How to Configure Audit Subsystem on IBM AIX 7.1 — step-by-step IBM AIX 7.1 tutorial on Progressive Robot

How to Configure Audit Subsystem on IBM AIX 7.1

Introduction IBM AIX 7.1 is the latest release of IBM’s enterprise-grade UNIX operating system, running on IBM Power Systems hardware. Known for its reliability, security, and performance in mission-critical environments, AIX 7.1 introduces enhanced virtualization, security hardening, and cloud integration features. This guide covers how to configure audit subsystem on ibm aix 7.1 on IBM […]

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What is Python? — step-by-step Python tutorial on Progressive Robot

What is Python?

Python is a flexible programming language that prioritizes the clarity and readability of code. A good choice for many software development use cases, Python is often used for scripting, automation, data analysis, [machine…

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