Common Problems

Common Problems 113606

Windows Server 2012 R2 – WFP callout driver blocks RPC and domain traffic – Fix and Prevention

🟠 High   ⏱ 5–30 min  Last verified: 13 December 2020 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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Oracle Linux 8 — httpd:2.4 — vulnerability — patch and remediation guide — diagnosis and fix on Oracle Linux 8

Oracle Linux 8 — httpd:2.4 — vulnerability — patch and remediation guide (ELSA-2022-5163)

🟢 Low   ⏱ 5–15 min  Last verified: 13 December 2020 Affected versions: Oracle Linux 8 📖 ~4 min read  •  Source: ELSA advisory ELSA-2022-5163 Related CVEs: CVE-2020-13950 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 — gcc-toolset-13-gcc — vulnerability — patch and remediation guide — diagnosis and fix on Oracle Linux 8

Oracle Linux 8 — gcc-toolset-13-gcc — vulnerability — patch and remediation guide (ELSA-2025-1306)

🟡 Medium   ⏱ 10–30 min  Last verified: 13 December 2020 Affected versions: Oracle Linux 8 📖 ~4 min read  •  Source: ELSA advisory ELSA-2025-1306 Related CVEs: CVE-2020-11023 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 — freerdp — vulnerability — patch and remediation guide — diagnosis and fix on Oracle Linux 8

Oracle Linux 8 — freerdp — vulnerability — patch and remediation guide (ELSA-2020-2336)

🟠 High   ⏱ 15–60 min  Last verified: 13 December 2020 Affected versions: Oracle Linux 8 📖 ~4 min read  •  Source: ELSA advisory ELSA-2020-2336 Related CVEs: CVE-2020-11521 CVE-2020-11523 CVE-2020-11524 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 — virt:ol and virt-devel:rhel security, bug fix, and — enhancement update — new behaviour and fixes — diagnosis and fix on Oracle Linux 8

Oracle Linux 8 — virt:ol and virt-devel:rhel security, bug fix, and — enhancement update — new behaviour and fixes (ELSA-2021-1762)

🟡 Medium   ⏱ 10–30 min  Last verified: 12 December 2020 Affected versions: Oracle Linux 8 📖 ~4 min read  •  Source: ELSA advisory ELSA-2021-1762 Related CVEs: CVE-2020-11947 CVE-2020-16092 CVE-2020-25637 CVE-2020-25707 CVE-2020-25723 CVE-2020-27821 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 118520

Ubuntu 16.04 sudo unable to resolve host error

🟡 Medium   ⏱ 5–30 min  Last verified: 12 December 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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Common Problems 113627

Windows Server 2012 R2 — Language Pack Mismatch Prevents LCU Applicability — Fix & Prevention

🟡 Medium   ⏱ 5–30 min  Last verified: 12 December 2020 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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Common Problems 113509

Windows Server 2012 R2 – SChannel TLS handshake failures after cipher hardening – Fix & Prevention

🟠 High   ⏱ 5–30 min  Last verified: 12 December 2020 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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openSUSE Tumbleweed — ipmitool — vulnerability — patch and remediation guide — diagnosis and fix on openSUSE Tumbleweed

openSUSE Tumbleweed — ipmitool — vulnerability — patch and remediation guide

🟠 High   ⏱ 15–60 min  Last verified: 25 May 2026 Affected versions: openSUSE Tumbleweed 📖 ~4 min read  •  Source: SUSE advisory openSUSE-SU-2020:0247-1 (see also SUSE bugzilla) Related CVEs: CVE-2020-5208 Upstream summary: It's been found that multiple functions in ipmitool before 1.8.19 neglect proper checking of the data received from a remote LAN party, […]

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