Operations

How to Configure SNMP with net-snmp on RHEL 8 — step-by-step RHEL 8 tutorial on Progressive Robot

How to Configure SNMP with net-snmp on RHEL 8

SNMP (Simple Network Management Protocol) is the foundation of most enterprise network monitoring stacks. While SNMPv1 and v2c rely on community strings that travel in plaintext, SNMPv3 adds authentication and encryption, making it suitable for production environments where security matters. On RHEL 8 the net-snmp package provides both the agent daemon (snmpd) and a rich […]

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Oracle Linux 8 — kernel security, bug fix, and — enhancement update — new behaviour and fixes — diagnosis and fix on Oracle Linux 8

Oracle Linux 8 — kernel security, bug fix, and — enhancement update — new behaviour and fixes (ELSA-2023-7077)

🟠 High   ⏱ 15–60 min  Last verified: 26 May 2022 Affected versions: Oracle Linux 8 📖 ~4 min read  •  Source: ELSA advisory ELSA-2023-7077 Related CVEs: CVE-2021-43975 CVE-2022-28388 CVE-2022-3594 CVE-2022-3640 CVE-2022-38457 CVE-2022-40133 Table of contents Symptom & Impact Environment & Reproduction Root Cause Analysis Quick Triage Step-by-Step Diagnosis Solution – Primary Fix Solution – […]

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Common Problems 115069

RHEL 8 – tuned Profile Selection Causes High I/O Wait

🟡 Medium   ⏱ 5–30 min  Last verified: 26 May 2022 📖 ~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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Alpine Linux edge — git-lfs — multiple vulnerabilities (3 CVEs) — patch and remediation guide — diagnosis and fix on Alpine Linux edge

Alpine Linux edge — git-lfs — multiple vulnerabilities (3 CVEs) — patch and remediation guide

🟡 Medium   ⏱ 10–30 min  Last verified: 25 May 2026 Affected versions: Alpine Linux edge / fixed in 3.1.2-r4 📖 ~4 min read  •  Source: Alpine secdb entry — git-lfs 3.1.2-r4 Related CVEs: CVE-2022-27191 CVE-2021-38561 CVE-2020-27955 Upstream summary: Alpine community repository for vedge ships git-lfs 3.1.2-r4 which addresses CVE-2022-27191. Table of contents Symptom & […]

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How to Configure Persistent Reserve with SCSI on IBM AIX 7.3 — step-by-step IBM AIX 7.3 tutorial on Progressive Robot

How to Configure Persistent Reserve with SCSI on IBM AIX 7.3

Introduction IBM AIX 7.3 is the latest release of IBM’s enterprise-grade UNIX operating system, running on IBM Power Systems hardware. Known for its reliability, security, and performance in mission-critical environments, AIX 7.3 introduces enhanced virtualization, security hardening, and cloud integration features. This guide covers how to configure persistent reserve with scsi on IBM AIX 7.3 […]

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FreeBSD 13 — rubygem-json — vulnerability — patch and remediation guide — diagnosis and fix on FreeBSD 13

FreeBSD 13 — rubygem-json — vulnerability — patch and remediation guide

🟢 Low   ⏱ 5–15 min  Last verified: 26 May 2022 Affected versions: FreeBSD 13 📖 ~4 min read  •  Source: FreeBSD VuXML VuXML topic: rubygem-json — Unsafe Objection Creation Vulnerability in JSON (Additional fix) Related CVEs: CVE-2020-10663 Upstream summary: When parsing certain JSON documents, the json gem (including the one bundled with Ruby) can […]

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FreeBSD 13 — htdig — vulnerability — patch and remediation guide — diagnosis and fix on FreeBSD 13

FreeBSD 13 — htdig — vulnerability — patch and remediation guide

🟢 Low   ⏱ 5–15 min  Last verified: 26 May 2022 Affected versions: FreeBSD 13 📖 ~4 min read  •  Source: FreeBSD VuXML VuXML topic: htdig — cross site scripting vulnerability Related CVEs: CVE-2005-0085 Upstream summary: Michael Krax reports a vulnerability within htdig. The vulnerability lies within an unsanitized config parameter, allowing a malicious attacker […]

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Debian 11 — snmptt — vulnerability — patch and remediation guide — diagnosis and fix on Debian 11

Debian 11 — snmptt — vulnerability — patch and remediation guide

🟢 Low   ⏱ 5–15 min  Last verified: 26 May 2022 Affected versions: Debian 11 (bullseye) 📖 ~4 min read  •  Source: Debian Security Tracker Related CVEs: CVE-2020-24361 Upstream summary: SNMPTT before 1.4.2 allows attackers to execute shell code via EXEC, PREXEC, or unknown_trap_exec. Table of contents Symptom & Impact Environment & Reproduction Root Cause […]

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