Common Problems

Common Problems 113112

Windows Server 2016 — TLS cipher suite hardening breaks legacy API integrations on internal services — Fix & Prevention

🟡 Medium   ⏱ 5–30 min  Last verified: 4 January 2021 Affected versions: Windows Server 2016 📖 ~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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Ubuntu 16.04 — libproxy — multiple vulnerabilities (2 CVEs) — patch and remediation guide — diagnosis and fix on Ubuntu 16.04

Ubuntu 16.04 — libproxy — multiple vulnerabilities (2 CVEs) — patch and remediation guide

🟢 Low   ⏱ 5–15 min  Last verified: 4 January 2021 Affected versions: Ubuntu 16.04 (xenial) 📖 ~4 min read  •  Source: Ubuntu Security Notice USN-4673-1 Related CVEs: CVE-2020-26154 CVE-2020-25219 Upstream summary: Li Fei discovered that libproxy incorrectly handled certain PAC files. An attacker could possibly use this issue to cause a crash or execute […]

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VMware ESXi 7.0 — ovf — multiple ESXi vulnerabilities (2 CVEs) — VIB / vLCM patch and remediation guide — diagnosis and fix on VMware ESXi 7.0

VMware ESXi 7.0 — ovf — multiple ESXi vulnerabilities (2 CVEs) — VIB / vLCM patch and remediation guide

🔴 Critical   ⏱ 30–120 min  Last verified: 25 May 2026 Affected versions: VMware ESXi 7.0 📖 ~4 min read  •  Source: VMware advisory VMSA-2020-0026 Related CVEs: CVE-2020-4004 CVE-2020-4005 Fixed image profile / build: ESXi670-202011301-SG Upstream summary: An issue in OVF descriptor parsing on ESXi (CVE-2020-4004 / CVE-2020-4005) lets a malicious actor with local access […]

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Oracle Linux 8 — rsync security and — enhancement update — new behaviour and fixes — diagnosis and fix on Oracle Linux 8

Oracle Linux 8 — rsync security and — enhancement update — new behaviour and fixes (ELSA-2022-7793)

🟡 Medium   ⏱ 10–30 min  Last verified: 3 January 2021 Affected versions: Oracle Linux 8 📖 ~4 min read  •  Source: ELSA advisory ELSA-2022-7793 Related CVEs: CVE-2022-37434 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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Common Problems 119142

Ubuntu 14.04 LTS NFS mounts return stale file handle

🟡 Medium   ⏱ 5–30 min  Last verified: 3 January 2021 Affected versions: 14.04 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 117526

Ubuntu 20.04 Slow APT Downloads

🟡 Medium   ⏱ 5–30 min  Last verified: 3 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 115627

RHEL 7 Yum Transaction Test Error After Interrupted Upgrade

🟡 Medium   ⏱ 5–30 min  Last verified: 3 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 113626

Windows Server 2012 R2 – PnP driver rollback loop keeps reinstalling faulty package – Fix and Prevention

🟡 Medium   ⏱ 5–30 min  Last verified: 3 January 2021 Affected versions: Windows Server 2012 R2 📖 ~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 […]

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Gentoo Linux — sys-fs/f2fs-tools — multiple vulnerabilities (5 CVEs) — patch and remediation guide — diagnosis and fix on Gentoo Linux

Gentoo Linux — sys-fs/f2fs-tools — multiple vulnerabilities (5 CVEs) — patch and remediation guide

🟡 Medium   ⏱ 10–30 min  Last verified: 25 May 2026 Affected versions: Gentoo Linux 📖 ~4 min read  •  Source: Gentoo GLSA GLSA-202101-26 Related CVEs: CVE-2020-6104 CVE-2020-6105 CVE-2020-6106 CVE-2020-6107 CVE-2020-6108 Upstream summary: Multiple vulnerabilities have been discovered in f2fs-tools. Please review the CVE identifiers referenced below for details. Table of contents Symptom & Impact […]

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