Troubleshooting

Oracle Linux 8 — .NET 7.0 security, bug fix, and — enhancement update — new behaviour and fixes — diagnosis and fix on Oracle Linux 8

Oracle Linux 8 — .NET 7.0 security, bug fix, and — enhancement update — new behaviour and fixes (ELSA-2023-4058)

🟠 High   ⏱ 15–60 min  Last verified: 23 October 2020 Affected versions: Oracle Linux 8 📖 ~4 min read  •  Source: ELSA advisory ELSA-2023-4058 Related CVEs: CVE-2023-33170 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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Ubuntu 18.04 — node-bl — vulnerability — patch and remediation guide — diagnosis and fix on Ubuntu 18.04

Ubuntu 18.04 — node-bl — vulnerability — patch and remediation guide

🟢 Low   ⏱ 5–15 min  Last verified: 23 October 2020 Affected versions: Ubuntu 18.04 (bionic) 📖 ~4 min read  •  Source: Ubuntu Security Notice USN-5098-1 Related CVEs: CVE-2020-8244 Upstream summary: It was discovered that bl didn't properly sanitize the inputs. An attacker could use this to leak sensitive information. Table of contents Symptom & […]

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Common Problems 121462

Debian 9 – APT Lock Contention Blocks Security Updates – Safe Recovery

🟠 High   ⏱ 5–30 min  Last verified: 23 October 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 117542

Ubuntu 20.04 LTS rsyslog Queue Backlog Delays Alerts

🟡 Medium   ⏱ 5–30 min  Last verified: 23 October 2020 Affected versions: 20.04 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 Perform a CIS Benchmark Audit on Oracle Linux 8 — step-by-step Oracle Linux 8 tutorial on Progressive Robot

How to Perform a CIS Benchmark Audit on Oracle Linux 8

Introduction Setting up perform a cis benchmark audit on oracle linux 8 on a Oracle Linux 8 server is a common task for system administrators, DevOps engineers, and site reliability engineers. This guide explains how to Perform a CIS Benchmark Audit on Oracle Linux 8, with all the commands you need, the SELinux and firewalld […]

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Common Problems 112613

Windows Server 2019 — TLS cipher suite hardening breaks legacy API integrations on internal services — Fix & Prevention

🟡 Medium   ⏱ 5–30 min  Last verified: 23 October 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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Common Problems 112450

Windows Server 2019 Storage Deduplication Jobs Saturating CPU and Starving Workloads – Fix & Prevention

🟡 Medium   ⏱ 5–30 min  Last verified: 23 October 2020 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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Oracle Linux 8 — lz4 — vulnerability — patch and remediation guide — diagnosis and fix on Oracle Linux 8

Oracle Linux 8 — lz4 — vulnerability — patch and remediation guide (ELSA-2025-11035)

🟡 Medium   ⏱ 10–30 min  Last verified: 23 October 2020 Affected versions: Oracle Linux 8 📖 ~4 min read  •  Source: ELSA advisory ELSA-2025-11035 Related CVEs: CVE-2019-17543 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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Oracle Linux 8 — mod_auth_openidc:2.3 — security and stability fixes — required update — diagnosis and fix on Oracle Linux 8

Oracle Linux 8 — mod_auth_openidc:2.3 — security and stability fixes — required update (ELSA-2023-6940)

🟡 Medium   ⏱ 10–30 min  Last verified: 22 October 2020 Affected versions: Oracle Linux 8 📖 ~4 min read  •  Source: ELSA advisory ELSA-2023-6940 Related CVEs: CVE-2022-23527 CVE-2023-28625 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 118952

Ubuntu 14.04 LTS DNS lookups time out intermittently

🟠 High   ⏱ 5–30 min  Last verified: 22 October 2020 Affected versions: 14.04 📖 ~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 […]

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