Package Management

Debian 10 — json-c — vulnerability — patch and remediation guide — diagnosis and fix on Debian 10

Debian 10 — json-c — vulnerability — patch and remediation guide

🟢 Low   ⏱ 5–15 min  Last verified: 29 December 2020 Affected versions: Debian 10 (buster) 📖 ~4 min read  •  Source: Debian Security Tracker Related CVEs: CVE-2020-12762 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 Use nim to Manage AIX Installations on IBM AIX 7.2 — step-by-step IBM AIX 7.2 tutorial on Progressive Robot

How to Use nim to Manage AIX Installations on IBM AIX 7.2

Introduction IBM AIX 7.2 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 7.2 introduces enhanced virtualization, security hardening, and cloud integration features. This guide covers how to use nim to manage aix installations on ibm aix […]

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How to Set Up Two-Factor Authentication with Google Authenticator on Oracle Linux 8 — step-by-step Oracle Linux 8 tutorial on Progressive Robot

How to Set Up Two-Factor Authentication with Google Authenticator on Oracle Linux 8

Introduction Setting up set up two-factor authentication with google authenticator on oracle linux 8 on a Oracle Linux 8 server is a common task for system administrators, DevOps engineers, and site reliability engineers. This guide explains how to Set Up Two-Factor Authentication with Google Authenticator on Oracle Linux 8, with all the commands you need, […]

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How to Configure a GitHub Actions Self-Hosted Runner on Windows Server 2012 R2 — step-by-step Windows Server 2012 R2 tutorial on Progressive Robot

How to Configure a GitHub Actions Self-Hosted Runner on Windows Server 2012 R2

How to Configure a GitHub Actions Self-Hosted Runner on Windows Server 2012 R2 GitHub Actions self-hosted runners allow you to execute CI/CD workflows on your own infrastructure rather than GitHub-hosted virtual machines. This is essential when your build process requires access to internal network resources, licensed software, hardware dongles, or a specific Windows Server configuration […]

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Ubuntu 14.04 — libpodofo — multiple vulnerabilities (10 CVEs) — patch and remediation guide — diagnosis and fix on Ubuntu 14.04

Ubuntu 14.04 — libpodofo — multiple vulnerabilities (10 CVEs) — patch and remediation guide

🟠 High   ⏱ 15–60 min  Last verified: 29 December 2020 Affected versions: Ubuntu 14.04 (trusty) 📖 ~4 min read  •  Source: Ubuntu Security Notice USN-7217-1 Related CVEs: CVE-2017-5886 CVE-2018-11255 CVE-2018-12983 CVE-2018-20797 CVE-2018-5308 CVE-2018-8002 CVE-2019-10723 CVE-2020-18971  +2 more Upstream summary: It was discovered that the PoDoFo library could dereference a NULL pointer when getting the […]

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

Oracle Linux 8 — libreoffice security, bug fix, and — enhancement update — new behaviour and fixes (ELSA-2020-4628)

🟢 Low   ⏱ 5–15 min  Last verified: 28 December 2020 Affected versions: Oracle Linux 8 📖 ~4 min read  •  Source: ELSA advisory ELSA-2020-4628 Related CVEs: CVE-2020-12802 CVE-2020-12803 Table of contents Symptom & Impact Environment & Reproduction Root Cause Analysis Quick Triage Step-by-Step Diagnosis Solution – Primary Fix Solution – Alternative Approaches Verification & […]

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Common Problems 115555

RHEL 7 firewalld Rich Rule Accidentally Blocks App Traffic

🟠 High   ⏱ 5–30 min  Last verified: 28 December 2020 Affected versions: RHEL 7 📖 ~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 115397

yum Fails Due to Another App Holding the RPM Lock

🟡 Medium   ⏱ 5–30 min  Last verified: 28 December 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 Add Software Repositories in SLES 12 — step-by-step SUSE Linux Enterprise 12 tutorial on Progressive Robot

How to Add Software Repositories in SLES 12

Introduction This tutorial covers How to Add Software Repositories in SLES 12 on SLES 12. SLES 12 (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 12 system is up to date: zypper refresh […]

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Ubuntu 14.04 — libssh2 — vulnerability — patch and remediation guide — diagnosis and fix on Ubuntu 14.04

Ubuntu 14.04 — libssh2 — vulnerability — patch and remediation guide

🟢 Low   ⏱ 5–15 min  Last verified: 28 December 2020 Affected versions: Ubuntu 14.04 (trusty) 📖 ~4 min read  •  Source: Ubuntu Security Notice USN-6371-1 Related CVEs: CVE-2020-22218 Upstream summary: It was discovered that libssh2 incorrectly handled memory access. An attacker could possibly use this issue to cause a crash. Table of contents Symptom […]

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