April 2020 - Page 62 of 66

How to Configure DNSSEC on RHEL 8 — step-by-step RHEL 8 tutorial on Progressive Robot

How to Configure DNSSEC on RHEL 8

DNS Security Extensions (DNSSEC) protect against cache poisoning and spoofing by cryptographically signing DNS records. On RHEL 8, you can enforce DNSSEC validation using either BIND 9 or Unbound, both available in the default repositories. This tutorial walks through configuring a validating resolver, testing zone signatures, and detecting failures. Securing your resolver is a foundational […]

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FreeBSD 12 — percona56-client — multiple vulnerabilities (20 CVEs) — patch and remediation guide — diagnosis and fix on FreeBSD 12

FreeBSD 12 — percona56-client — multiple vulnerabilities (20 CVEs) — patch and remediation guide

🟠 High   ⏱ 15–60 min  Last verified: 25 May 2026 Affected versions: FreeBSD 12 📖 ~4 min read  •  Source: FreeBSD VuXML VuXML topic: MySQL Client — Multiple vulerabilities Related CVEs: CVE-2015-4792 CVE-2015-4802 CVE-2015-4807 CVE-2015-4815 CVE-2015-4826 CVE-2015-4830 CVE-2015-4836 CVE-2015-4858  +12 more Upstream summary: Oracle reports: This Critical Patch Update contains 45 new security patches […]

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How to Configure Prometheus Node Exporter on RHEL 9 — step-by-step RHEL 9 tutorial on Progressive Robot

How to Configure Prometheus Node Exporter on RHEL 9

Prometheus Node Exporter is the standard agent for exposing hardware and operating system metrics from Linux hosts to a Prometheus server. It collects data on CPU usage, memory, disk I/O, network throughput, filesystem utilisation, and dozens of other system-level indicators, making them available via a simple HTTP endpoint on port 9100. Installing Node Exporter on […]

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Gentoo Linux — dev-java/xmlrpc — multiple vulnerabilities (3 CVEs) — patch and remediation guide — diagnosis and fix on Gentoo Linux

Gentoo Linux — dev-java/xmlrpc — multiple vulnerabilities (3 CVEs) — patch and remediation guide

🟡 Medium   ⏱ 10–30 min  Last verified: 25 May 2026 Affected versions: Gentoo Linux 📖 ~4 min read  •  Source: Gentoo GLSA GLSA-202401-26 Related CVEs: CVE-2016-5002 CVE-2016-5003 CVE-2019-17570 Upstream summary: Multiple vulnerabilities have been discovered in Apache XML-RPC. Please review the CVE identifiers referenced below for details. Table of contents Symptom & Impact Environment […]

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Gentoo Linux — dev-embedded/u-boot-tools — vulnerability — patch and remediation guide — diagnosis and fix on Gentoo Linux

Gentoo Linux — dev-embedded/u-boot-tools — 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-202405-23 Related CVEs: CVE-2020-8432 Upstream summary: A vulnerability has been discovered in U-Boot tools. Please review the CVE identifier referenced below for details. Table of contents Symptom & Impact Environment & Reproduction […]

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Common Problems 115063

RHEL 8 multipath devices intermittently flap and fail paths

🟡 Medium   ⏱ 5–30 min  Last verified: 20 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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Gentoo Linux — net-ftp/atftp — multiple vulnerabilities (2 CVEs) — patch and remediation guide — diagnosis and fix on Gentoo Linux

Gentoo Linux — net-ftp/atftp — multiple vulnerabilities (2 CVEs) — patch and remediation guide

🟠 High   ⏱ 15–60 min  Last verified: 25 May 2026 Affected versions: Gentoo Linux 📖 ~4 min read  •  Source: Gentoo GLSA GLSA-202003-14 Related CVEs: CVE-2019-11365 CVE-2019-11366 Upstream summary: Multiple vulnerabilities have been discovered in atftp. Please review the CVE identifiers referenced below for details. Table of contents Symptom & Impact Environment & Reproduction […]

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