Operations

Alpine Linux edge — ntpsec — multiple vulnerabilities (6 CVEs) — patch and remediation guide — diagnosis and fix on Alpine Linux edge

Alpine Linux edge — ntpsec — multiple vulnerabilities (6 CVEs) — patch and remediation guide

🟠 High   ⏱ 15–60 min  Last verified: 25 May 2026 Affected versions: Alpine Linux edge / fixed in 1.2.2a-r0 📖 ~4 min read  •  Source: Alpine secdb entry — ntpsec 1.2.2a-r0 Related CVEs: CVE-2023-4012 CVE-2021-22212 CVE-2019-6442 CVE-2019-6443 CVE-2019-6444 CVE-2019-6445 Upstream summary: Alpine community repository for vedge ships ntpsec 1.2.2a-r0 which addresses CVE-2023-4012. Table of […]

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Common Problems 117615

Ubuntu 20.04 LTS CIFS Mount Fails with Permission Denied

🟡 Medium   ⏱ 5–30 min  Last verified: 18 April 2023 📖 ~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 Set Up VLANs on SLES 15 — step-by-step SUSE Linux Enterprise 15 tutorial on Progressive Robot

How to Set Up VLANs on SLES 15

Introduction This tutorial covers How to Set Up VLANs on SLES 15 on SLES 15. SLES 15 (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 15 system is up to date: zypper refresh […]

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Common Problems 111689

Windows Server 2022 — Storage Spaces Virtual Disk Shows Degraded with Missing Physical Disk — Fix & Prevention

🟠 High   ⏱ 5–30 min  Last verified: 18 April 2023 Affected versions: Windows Server 2022 📖 ~1 min read Table of contents Symptom & Impact Quick Checks Deep Diagnosis Primary Fix Verification Prevention & Hardening Symptom & Impact A virtual disk enters degraded state after a disk dropout, causing reduced resiliency and slow I/O. […]

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Gentoo Linux — sys-apps/less — vulnerability — patch and remediation guide — diagnosis and fix on Gentoo Linux

Gentoo Linux — sys-apps/less — vulnerability — patch and remediation guide

🟡 Medium   ⏱ 10–30 min  Last verified: 25 May 2026 Affected versions: Gentoo Linux 📖 ~4 min read  •  Source: Gentoo GLSA GLSA-202310-11 Related CVEs: CVE-2022-46663 Upstream summary: less suffered from a flaw in its terminal escape sequence handling which made its filtering incomplete. Table of contents Symptom & Impact Environment & Reproduction Root […]

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FreeBSD 12 — py38-configobj — vulnerability — patch and remediation guide — diagnosis and fix on FreeBSD 12

FreeBSD 12 — py38-configobj — vulnerability — patch and remediation guide

🟢 Low   ⏱ 5–15 min  Last verified: 18 April 2023 Affected versions: FreeBSD 12 📖 ~4 min read  •  Source: FreeBSD VuXML VuXML topic: Configobj — Regular Expression Denial of Service attack Related CVEs: CVE-2023-26112 Upstream summary: [email protected] reports: All versions of the package configobj are vulnerable to Regular Expression Denial of Service (ReDoS) […]

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How to Monitor Nginx Access Logs with GoAccess on RHEL 9 — step-by-step RHEL 9 tutorial on Progressive Robot

How to Monitor Nginx Access Logs with GoAccess on RHEL 9

GoAccess is a fast, open-source real-time web log analyzer that runs entirely in the terminal or generates self-contained HTML reports without requiring a separate database or web framework. On RHEL 9, it can parse Nginx access logs in seconds to surface the metrics that matter most — unique visitors, top requested URLs, HTTP response code […]

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Windows Server 2019 — KB5029295 — multiple vulnerabilities (20 CVEs) — patch and remediation guide — diagnosis and fix on Windows Server 2019

Windows Server 2019 — KB5029295 — multiple vulnerabilities (20 CVEs) — patch and remediation guide

🔴 Critical   ⏱ 15–90 min  Last verified: 25 May 2026 Affected versions: Windows Server 2019 📖 ~4 min read  •  Source: Microsoft KB5029295 • MSRC update-guide entry Related CVEs: CVE-2023-36910 CVE-2023-36911 CVE-2023-35385 CVE-2023-35359 CVE-2023-36882 CVE-2023-36889 CVE-2023-36900 CVE-2023-36903  +12 more Affected components: Windows Server 2019 (Server Core installation) Table of contents Symptom & Impact Environment […]

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Debian 11 — libxerces2-java — multiple vulnerabilities (3 CVEs) — patch and remediation guide — diagnosis and fix on Debian 11

Debian 11 — libxerces2-java — multiple vulnerabilities (3 CVEs) — patch and remediation guide

🟡 Medium   ⏱ 10–30 min  Last verified: 18 April 2023 Affected versions: Debian 11 (bullseye) 📖 ~4 min read  •  Source: Debian Security Tracker Related CVEs: CVE-2009-2625 CVE-2012-0881 CVE-2022-23437 Upstream summary: XMLScanner.java in Apache Xerces2 Java, as used in Sun Java Runtime Environment (JRE) in JDK and JRE 6 before Update 15 and JDK […]

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