May 2021 - Page 30 of 69

Arch Linux — powerdns-recursor — multiple vulnerabilities (16 CVEs) — patch and remediation guide — diagnosis and fix on Arch Linux

Arch Linux — powerdns-recursor — multiple vulnerabilities (16 CVEs) — patch and remediation guide

  • May 18, 2021
  • Linux
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🟠 High   ⏱ 15–60 min  Last verified: 25 May 2026 Affected versions: Arch Linux (rolling release) 📖 ~4 min read  •  Source: Arch ASA ASA-202010-6 Related CVEs: CVE-2020-25829 CVE-2020-12244 CVE-2020-10995 CVE-2019-3807 CVE-2019-3806 CVE-2018-16855 CVE-2018-14644 CVE-2018-14626  +8 more Upstream summary: Type: denial of service. Status: Fixed. Affected: 4.3.4-1. Fixed in: 4.3.5-1. Group: AVG-1243. Table of […]

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Common Problems 115029

RHEL 8 – Podman Pull Fails Due to Untrusted Registry Certificate

  • May 18, 2021
  • Linux
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🟡 Medium   ⏱ 5–30 min  Last verified: 19 May 2026 📖 ~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 K3s Lightweight Kubernetes on Oracle Linux 8 — step-by-step Oracle Linux 8 tutorial on Progressive Robot

How to Set Up K3s Lightweight Kubernetes on Oracle Linux 8

Introduction How to Set Up K3s Lightweight Kubernetes on Oracle Linux 8 on Oracle Linux 8 provides administrators with a robust, enterprise-ready workflow that integrates cleanly with systemd, SELinux, firewalld, and the modern AppStream module system. In this tutorial we will walk through every step required, from package installation to verification, so that the resulting […]

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FreeBSD 13 — py26-django-devel — multiple vulnerabilities (10 CVEs) — patch and remediation guide — diagnosis and fix on FreeBSD 13

FreeBSD 13 — py26-django-devel — multiple vulnerabilities (10 CVEs) — patch and remediation guide

  • May 18, 2021
  • BSD
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🟠 High   ⏱ 15–60 min  Last verified: 25 May 2026 Affected versions: FreeBSD 13 📖 ~4 min read  •  Source: FreeBSD VuXML VuXML topic: django — multiple vulnerabilities Related CVEs: CVE-2009-3695 CVE-2010-3082 CVE-2012-3442 CVE-2012-3443 CVE-2012-3444 CVE-2013-1443 CVE-2013-4315 CVE-2014-0472  +2 more Upstream summary: The Django project reports: These releases address an unexpected code-execution issue, a […]

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Common Problems 114389

DNF Metadata Expired Too Frequently on RHEL 9

🟡 Medium   ⏱ 5–30 min  Last verified: 19 May 2026 📖 ~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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FreeBSD 13 — ko-netscape-communicator-linux — multiple vulnerabilities (3 CVEs) — patch and remediation guide — diagnosis and fix on FreeBSD 13

FreeBSD 13 — ko-netscape-communicator-linux — multiple vulnerabilities (3 CVEs) — patch and remediation guide

  • May 18, 2021
  • BSD
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🟡 Medium   ⏱ 10–30 min  Last verified: 25 May 2026 Affected versions: FreeBSD 13 📖 ~4 min read  •  Source: FreeBSD VuXML VuXML topic: libpng stack-based buffer overflow and other code concerns Related CVEs: CVE-2004-0597 CVE-2004-0598 CVE-2004-0599 Upstream summary: Chris Evans has discovered multiple vulnerabilities in libpng, which can be exploited by malicious people […]

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Common Problems 113414

Windows Server 2016 – Failover cluster loses quorum after witness outage – Fix & Prevention (FIX-PREVENTION-2)

🟠 High   ⏱ 5–30 min  Last verified: 18 May 2026 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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Debian 10 — libspf2 — vulnerability — patch and remediation guide — diagnosis and fix on Debian 10

Debian 10 — libspf2 — vulnerability — patch and remediation guide

  • May 18, 2021
  • Linux
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🟢 Low   ⏱ 5–15 min  Last verified: 25 May 2026 Affected versions: Debian 10 (buster) 📖 ~4 min read  •  Source: Debian Security Tracker Related CVEs: CVE-2021-20314 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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How to Configure OSPF with FRRouting on FreeBSD 12 — step-by-step FreeBSD 12 tutorial on Progressive Robot

How to Configure OSPF with FRRouting on FreeBSD 12

Introduction This guide explains how to Configure OSPF with FRRouting 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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