Troubleshooting

Common Problems 113065

Windows Server 2016 – NTFS ACL inheritance disabled causing access denied – Fix & Prevention

🟡 Medium   ⏱ 5–30 min  Last verified: 8 February 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 14.04 — libjpeg6b — multiple vulnerabilities (5 CVEs) — patch and remediation guide — diagnosis and fix on Ubuntu 14.04

Ubuntu 14.04 — libjpeg6b — multiple vulnerabilities (5 CVEs) — patch and remediation guide

🟡 Medium   ⏱ 10–30 min  Last verified: 8 February 2020 Affected versions: Ubuntu 14.04 (trusty) 📖 ~4 min read  •  Source: Ubuntu Security Notice USN-5497-1 Related CVEs: CVE-2018-11212 CVE-2018-11213 CVE-2018-11214 CVE-2018-11813 CVE-2020-14152 Upstream summary: It was discovered that Libjpeg6b was not properly performing bounds checks when compressing PPM and Targa image files. An attacker […]

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openSUSE Tumbleweed — kvirc — multiple vulnerabilities (2 CVEs) — patch and remediation guide — diagnosis and fix on openSUSE Tumbleweed

openSUSE Tumbleweed — kvirc — multiple vulnerabilities (2 CVEs) — patch and remediation guide

🟠 High   ⏱ 15–60 min  Last verified: 25 May 2026 Affected versions: openSUSE Tumbleweed 📖 ~4 min read  •  Source: SUSE security advisory (see also SUSE bugzilla) Related CVEs: CVE-2008-4748 CVE-2010-2785 Upstream summary: Format string vulnerability in the URI handler in KVirc 3.4.0, when set as the default application for processing IRC URIs, allows […]

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

Oracle Linux 8 — GraalVM — vulnerability — patch and remediation guide (ELSA-2023-12313)

🟠 High   ⏱ 15–60 min  Last verified: 8 February 2020 Affected versions: Oracle Linux 8 📖 ~4 min read  •  Source: ELSA advisory ELSA-2023-12313 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 […]

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Oracle Linux 8 — .NET Core on Red Hat Enterprise Linux 8 — vulnerability — patch and remediation guide — diagnosis and fix on Oracle Linux 8

Oracle Linux 8 — .NET Core on Red Hat Enterprise Linux 8 — vulnerability — patch and remediation guide

🟠 High   ⏱ 15–60 min  Last verified: 8 February 2020 Affected versions: Oracle Linux 8 📖 ~4 min read  •  Source: ELSA advisory ELSA-2020-2471 Related CVEs: CVE-2020-1108 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 121524

Debian 9 – kernel or grub updates fail because /boot is full

🟠 High   ⏱ 5–30 min  Last verified: 7 February 2020 Affected versions: Debian 9 📖 ~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 117977

Ubuntu 18.04 UFW Rules Not Applied After Reboot

🟡 Medium   ⏱ 5–30 min  Last verified: 7 February 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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How to Configure MariaDB Galera Cluster on FreeBSD 12 — step-by-step FreeBSD 12 tutorial on Progressive Robot

How to Configure MariaDB Galera Cluster on FreeBSD 12

Introduction This guide explains how to Configure MariaDB Galera Cluster on FreeBSD 12 on FreeBSD 12. FreeBSD uses the pkg(8) binary package manager, rc.conf(5) for service startup configuration, and pf(4) as its primary packet filter. There is no SELinux or AppArmor — instead, FreeBSD provides the MAC (Mandatory Access Control) framework and Capsicum for fine-grained […]

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FreeBSD 12 — ruby25-gems — multiple vulnerabilities (6 CVEs) — patch and remediation guide — diagnosis and fix on FreeBSD 12

FreeBSD 12 — ruby25-gems — multiple vulnerabilities (6 CVEs) — patch and remediation guide

🟡 Medium   ⏱ 10–30 min  Last verified: 7 February 2020 Affected versions: FreeBSD 12 📖 ~4 min read  •  Source: FreeBSD VuXML VuXML topic: RubyGems — multiple vulnerabilities Related CVEs: CVE-2019-8320 CVE-2019-8321 CVE-2019-8322 CVE-2019-8323 CVE-2019-8324 CVE-2019-8325 Upstream summary: RubyGems Security Advisories: CVE-2019-8320: Delete directory using symlink when decompressing tar CVE-2019-8321: Escape sequence injection vulnerability […]

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How to Configure Active Directory Auditing on Windows Server 2012 R2 — step-by-step Windows Server 2012 R2 tutorial on Progressive Robot

How to Configure Active Directory Auditing on Windows Server 2012 R2

How to Configure Active Directory Auditing on Windows Server 2012 R2 Active Directory auditing provides visibility into who is making changes to directory objects, when those changes occur, and what the values were before and after the change. Comprehensive AD auditing is essential for security compliance, forensic investigation, and change management. Windows Server 2012 R2 […]

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