Troubleshooting

Debian 10 — webkit2gtk — multiple vulnerabilities (20 CVEs) — patch and remediation guide — diagnosis and fix on Debian 10

Debian 10 — webkit2gtk — multiple vulnerabilities (20 CVEs) — patch and remediation guide

🟠 High   ⏱ 15–60 min  Last verified: 19 September 2020 Affected versions: Debian 10 (buster) 📖 ~4 min read  •  Source: Debian Security Tracker Related CVEs: CVE-2019-8625 CVE-2019-8644 CVE-2019-8812 CVE-2019-8835 CVE-2020-10018 CVE-2020-11793 CVE-2020-9947 CVE-2020-13558  +12 more Table of contents Symptom & Impact Environment & Reproduction Root Cause Analysis Quick Triage Step-by-Step Diagnosis Solution – […]

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Alpine Linux edge — ngircd — vulnerability — patch and remediation guide — diagnosis and fix on Alpine Linux edge

Alpine Linux edge — ngircd — vulnerability — patch and remediation guide

🟡 Medium   ⏱ 10–30 min  Last verified: 25 May 2026 Affected versions: Alpine Linux edge / fixed in 25-r1 📖 ~4 min read  •  Source: Alpine secdb entry — ngircd 25-r1 Related CVEs: CVE-2020-14148 Upstream summary: Alpine main repository for vedge ships ngircd 25-r1 which addresses CVE-2020-14148. Table of contents Symptom & Impact Environment […]

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How to Configure Teaming Network Adapters on Windows Server 2019 — step-by-step Windows Server 2019 tutorial on Progressive Robot

How to Configure Teaming Network Adapters on Windows Server 2019

Introduction to NIC Teaming on Windows Server 2019 NIC Teaming (also known as Link Aggregation or Network Adapter Bonding) allows you to combine two or more physical network adapters into a single logical adapter. In Windows Server 2019, NIC Teaming is built in as a feature called Load Balancing and Failover (LBFO). The primary benefits […]

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Oracle Linux 8 — git-lfs — security and stability fixes — required update — diagnosis and fix on Oracle Linux 8

Oracle Linux 8 — git-lfs — security and stability fixes — required update (ELSA-2023-2866)

🟡 Medium   ⏱ 10–30 min  Last verified: 18 September 2020 Affected versions: Oracle Linux 8 📖 ~4 min read  •  Source: ELSA advisory ELSA-2023-2866 Related CVEs: CVE-2022-2880 CVE-2022-41717 CVE-2022-41715 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 119061

Ubuntu 14.04 LTS sudo fails due to unresolved hostname

🟢 Low   ⏱ 5–30 min  Last verified: 18 September 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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Ubuntu 14.04 — libpam-krb5 — vulnerability — patch and remediation guide — diagnosis and fix on Ubuntu 14.04

Ubuntu 14.04 — libpam-krb5 — vulnerability — patch and remediation guide

🟢 Low   ⏱ 5–15 min  Last verified: 18 September 2020 Affected versions: Ubuntu 14.04 (trusty) 📖 ~4 min read  •  Source: Ubuntu Security Notice USN-4314-1 Related CVEs: CVE-2020-10595 Upstream summary: Russ Allbery discovered that pam-krb5 incorrectly handled some responses. An attacker could possibly use this issue to execute arbitrary code. Table of contents Symptom […]

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How to Configure SLES 12 in Azure — step-by-step SUSE Linux Enterprise 12 tutorial on Progressive Robot

How to Configure SLES 12 in Azure

Introduction This tutorial covers How to Configure SLES 12 in Azure 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 refresh && […]

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Common Problems 113432

Windows Server 2012 R2 Disk Queue Length Sustained Above Threshold on VM Hosts – Fix & Prevention

🟠 High   ⏱ 5–30 min  Last verified: 18 September 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 113394

Windows Server 2012 R2 — DNS Server service intermittently stops responding after cumulative update on Windows Server 2012 R2 — Fix & Prevention

🟠 High   ⏱ 5–30 min  Last verified: 18 September 2020 Affected versions: Windows Server 2012 R2 📖 ~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 […]

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Common Problems 112573

Windows Server 2019 — NLB multicast mode conflicts with upstream switch ARP handling and causes packet loss — Fix & Prevention

🟠 High   ⏱ 5–30 min  Last verified: 18 September 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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