Common Problems

Common Problems 113126

Windows Server 2016 Write Cache Policy Disabled Reducing Array Write Performance – Fix & Prevention

🟠 High   ⏱ 5–30 min  Last verified: 26 December 2020 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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Ubuntu 20.04 — ntp — multiple vulnerabilities (2 CVEs) — patch and remediation guide — diagnosis and fix on Ubuntu 20.04

Ubuntu 20.04 — ntp — multiple vulnerabilities (2 CVEs) — patch and remediation guide

🟢 Low   ⏱ 5–15 min  Last verified: 26 December 2020 Affected versions: Ubuntu 20.04 (focal) 📖 ~4 min read  •  Source: Ubuntu Security Notice USN-5175-1 Related CVEs: CVE-2020-15025 CVE-2019-8936 Upstream summary: It was discovered that ntpd incorrectly handled memory when CMAC keys were used. A remote attacker could possibly use this issue to cause […]

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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-2021-9486)

🟠 High   ⏱ 15–60 min  Last verified: 26 December 2020 Affected versions: Oracle Linux 8 📖 ~4 min read  •  Source: ELSA advisory ELSA-2021-9486 Related CVEs: CVE-2020-16119 CVE-2017-6074 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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Oracle Linux 8 — tomcat — security and stability fixes — required update — diagnosis and fix on Oracle Linux 8

Oracle Linux 8 — tomcat — security and stability fixes — required update (ELSA-2024-3666)

🟠 High   ⏱ 15–60 min  Last verified: 25 December 2020 Affected versions: Oracle Linux 8 📖 ~4 min read  •  Source: ELSA advisory ELSA-2024-3666 Related CVEs: CVE-2024-23672 CVE-2024-24549 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 118566

Ubuntu 16.04 LTS – cron jobs stop running unexpectedly

🟡 Medium   ⏱ 5–30 min  Last verified: 25 December 2020 Affected versions: Ubuntu 16.04 LTS Ubuntu 16.04 Ubuntu 16.04.7 📖 ~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 […]

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Common Problems 113011

Windows Server 2016 — Update Install Stuck at 100 Percent for Hours — Fix & Prevention

🟡 Medium   ⏱ 5–30 min  Last verified: 25 December 2020 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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Ubuntu 20.04 — xcftools — multiple vulnerabilities (2 CVEs) — patch and remediation guide — diagnosis and fix on Ubuntu 20.04

Ubuntu 20.04 — xcftools — multiple vulnerabilities (2 CVEs) — patch and remediation guide

🟢 Low   ⏱ 5–15 min  Last verified: 25 December 2020 Affected versions: Ubuntu 20.04 (focal) 📖 ~4 min read  •  Source: Ubuntu Security Notice USN-5988-1 Related CVEs: CVE-2019-5086 CVE-2019-5087 Upstream summary: It was discovered that integer overflows vulnerabilities existed in Xcftools. An attacker could use this to cause a denial of service (system crash) […]

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

Debian 10 — freeimage — vulnerability — patch and remediation guide

🟢 Low   ⏱ 5–15 min  Last verified: 25 December 2020 Affected versions: Debian 10 (buster) 📖 ~4 min read  •  Source: Debian Security Tracker Related CVEs: CVE-2019-12211 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 — postgresql:10 — security and stability fixes — required update — diagnosis and fix on Oracle Linux 8

Oracle Linux 8 — postgresql:10 — security and stability fixes — required update (ELSA-2020-3669)

🟡 Medium   ⏱ 10–30 min  Last verified: 24 December 2020 Affected versions: Oracle Linux 8 📖 ~4 min read  •  Source: ELSA advisory ELSA-2020-3669 Related CVEs: CVE-2019-10164 CVE-2019-10208 CVE-2020-14350 CVE-2019-10130 CVE-2020-14349 CVE-2020-1720 Table of contents Symptom & Impact Environment & Reproduction Root Cause Analysis Quick Triage Step-by-Step Diagnosis Solution – Primary Fix Solution – […]

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