Security Hardening

Common Problems 117996

Ubuntu 18.04 LTS – disk full under /var/log causes service failures – Fix & Prevention

🟠 High   ⏱ 5–30 min  Last verified: 1 October 2019 Affected versions: Ubuntu 18.04 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 113557

Windows Server 2012 R2 — Offline WIM Servicing Fails to Inject Security Update CAB — Fix & Prevention

🟡 Medium   ⏱ 5–30 min  Last verified: 1 October 2019 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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How to Set Up a Private Docker Registry on FreeBSD 12 — step-by-step FreeBSD 12 tutorial on Progressive Robot

How to Set Up a Private Docker Registry on FreeBSD 12

Introduction FreeBSD 12 is a UNIX-derived operating system renowned for its network stack performance, ZFS integration, and Jail isolation primitives. Setting up set up a private docker registry on freebsd 12 on FreeBSD 12 follows the rc.conf/service(8) paradigm rather than systemd, which means enabling a service and configuring its startup options are done differently from […]

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FreeBSD 12 — firebird25-server — vulnerability — patch and remediation guide — diagnosis and fix on FreeBSD 12

FreeBSD 12 — firebird25-server — vulnerability — patch and remediation guide

🟢 Low   ⏱ 5–15 min  Last verified: 1 October 2019 Affected versions: FreeBSD 12 📖 ~4 min read  •  Source: FreeBSD VuXML VuXML topic: firebird — Remote Stack Buffer Overflow Related CVEs: CVE-2013-2492 Upstream summary: Firebird Project reports: The FirebirdSQL server is vulnerable to a stack buffer overflow that can be triggered when an […]

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Common Problems 113532

Windows Server 2012 R2 Storage Replica Backlog Growth During Peak Write Periods – Fix & Prevention

🟠 High   ⏱ 5–30 min  Last verified: 1 October 2019 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 113389

Windows Server 2012 R2 — Active Directory Domain Services (NTDS) service fails to start — Fix & Prevention

🟠 High   ⏱ 5–30 min  Last verified: 1 October 2019 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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Ubuntu 14.04 — librabbitmq — vulnerability — patch and remediation guide — diagnosis and fix on Ubuntu 14.04

Ubuntu 14.04 — librabbitmq — vulnerability — patch and remediation guide

🟢 Low   ⏱ 5–15 min  Last verified: 1 October 2019 Affected versions: Ubuntu 14.04 (trusty) 📖 ~4 min read  •  Source: Ubuntu Security Notice USN-4214-1 Related CVEs: CVE-2019-18609 Upstream summary: It was discovered that RabbitMQ incorrectly handled certain inputs. An attacker could possibly use this issue to execute arbitrary code. Table of contents Symptom […]

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How to Enable Brotli Compression in Nginx on FreeBSD 12 — step-by-step FreeBSD 12 tutorial on Progressive Robot

How to Enable Brotli Compression in Nginx on FreeBSD 12

Introduction How to Enable Brotli Compression in Nginx on FreeBSD 12 is a core administration task for any FreeBSD 12 server operator. FreeBSD 12 ships with the 15.0-RELEASE kernel, ZFS as the default root filesystem, Capsicum capability sandboxing improvements, and an updated ports tree. Unlike Linux distributions, FreeBSD uses rc(8) for service management, pf for […]

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Alpine Linux edge — gtk-vnc — multiple vulnerabilities (2 CVEs) — patch and remediation guide — diagnosis and fix on Alpine Linux edge

Alpine Linux edge — gtk-vnc — multiple vulnerabilities (2 CVEs) — patch and remediation guide

🟡 Medium   ⏱ 10–30 min  Last verified: 25 May 2026 Affected versions: Alpine Linux edge / fixed in 0.7.0-r0 📖 ~4 min read  •  Source: Alpine secdb entry — gtk-vnc 0.7.0-r0 Related CVEs: CVE-2017-5884 CVE-2017-5885 Upstream summary: Alpine community repository for vedge ships gtk-vnc 0.7.0-r0 which addresses CVE-2017-5884. Table of contents Symptom & Impact […]

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Oracle Linux 8 — irssi — vulnerability — patch and remediation guide — diagnosis and fix on Oracle Linux 8

Oracle Linux 8 — irssi — vulnerability — patch and remediation guide (ELSA-2020-1616)

🟢 Low   ⏱ 5–15 min  Last verified: 1 October 2019 Affected versions: Oracle Linux 8 📖 ~4 min read  •  Source: ELSA advisory ELSA-2020-1616 Related CVEs: CVE-2019-13045 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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