Linux

Oracle Linux 8 — libyang — vulnerability — patch and remediation guide — diagnosis and fix on Oracle Linux 8

Oracle Linux 8 — libyang — vulnerability — patch and remediation guide (ELSA-2019-4360)

🟠 High   ⏱ 15–60 min  Last verified: 6 October 2020 Affected versions: Oracle Linux 8 📖 ~4 min read  •  Source: ELSA advisory ELSA-2019-4360 Related CVEs: CVE-2019-19334 CVE-2019-19333 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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Arch Linux — tcpreplay — multiple vulnerabilities (5 CVEs) — patch and remediation guide — diagnosis and fix on Arch Linux

Arch Linux — tcpreplay — multiple vulnerabilities (5 CVEs) — patch and remediation guide

🟠 High   ⏱ 15–60 min  Last verified: 25 May 2026 Affected versions: Arch Linux (rolling release) 📖 ~4 min read  •  Source: Arch ASA ASA-201905-5 Related CVEs: CVE-2019-8381 CVE-2019-8377 CVE-2019-8376 CVE-2017-6429 CVE-2020-12740 Upstream summary: Type: multiple issues. Status: Fixed. Affected: 4.3.1-1. Fixed in: 4.3.2-1. Group: AVG-902. Table of contents Symptom & Impact Environment & […]

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Ubuntu 18.04 — libmediainfo — multiple vulnerabilities (4 CVEs) — patch and remediation guide — diagnosis and fix on Ubuntu 18.04

Ubuntu 18.04 — libmediainfo — multiple vulnerabilities (4 CVEs) — patch and remediation guide

🟡 Medium   ⏱ 10–30 min  Last verified: 5 October 2020 Affected versions: Ubuntu 18.04 (bionic) 📖 ~4 min read  •  Source: Ubuntu Security Notice USN-5237-1 Related CVEs: CVE-2020-15395 CVE-2020-26797 CVE-2019-11372 CVE-2019-11373 Upstream summary: It was discovered that MediaInfoLib incorrectly handled certain specially crafted files. An attacker could possibly use this issue to cause a […]

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Oracle Linux 8 — dotnet3.1 security and bugfix update — diagnosis and fix on Oracle Linux 8

Oracle Linux 8 — dotnet3.1 security and bugfix update (ELSA-2021-0790)

🟠 High   ⏱ 15–60 min  Last verified: 5 October 2020 Affected versions: Oracle Linux 8 📖 ~4 min read  •  Source: ELSA advisory ELSA-2021-0790 Related CVEs: CVE-2021-26701 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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Common Problems 115093

RHEL 8 cockpit web console unreachable after certificate update

🟡 Medium   ⏱ 5–30 min  Last verified: 5 October 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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Cara Membaca dan Mengatur Variabel Lingkungan dan Shell pada Linux — step-by-step Linux tutorial on Progressive Robot

Cara Membaca dan Mengatur Variabel Lingkungan dan Shell pada Linux

Dalam sistem Linux, variabel lingkungan dan shell digunakan untuk menentukan kondisi operasi bagi shell. Mereka dapat diberikan ke proses anak dan dapat digunakan untuk mengatur opsi serta membuat informasi tertentu tersedia untuk proses yang dihasilkan di dalam sesi. Dalam panduan ini, kita akan membahas cara membaca, memodifikasi, menciptakan, dan menghancurkan variabel lingkungan dan shell.

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How to Install WordPress with LEMP on Ubuntu — step-by-step Linux tutorial on Progressive Robot

How to Install WordPress with LEMP on Ubuntu

WordPress has seen an incredible adoption rate among new and experienced engineers alike, and is a great choice for getting a website up and running efficiently. After an initial setup, almost all administration for WordPress websites can be done through its graphical interface. In this tutorial, learn how to set up a WordPress instance on Ubuntu.

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How To Install and Configure Drone on Ubuntu 16.04 — step-by-step Linux tutorial on Progressive Robot

How To Install and Configure Drone on Ubuntu 16.04

Drone is a popular continuous integration and delivery platform built in Go. It integrates with many popular version control repository services like GitHub, GitLab, and Bitbucket to watch for code changes and automatically build and test changes as they…

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How To Define and Use Handlers in Ansible Playbooks — step-by-step Linux tutorial on Progressive Robot

How To Define and Use Handlers in Ansible Playbooks

In a nutshell, handlers are special tasks that only get executed when triggered via the notify directive. Handlers are executed at the end of the play, once all tasks are finished. In Ansible, handlers are typically used to start, reload, restart, and stop services. In this guide, learn more about how to define and use handlers in Ansible playbooks.

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How To Create an SSH CA to Validate Hosts and Clients with Ubuntu — step-by-step Linux tutorial on Progressive Robot

How To Create an SSH CA to Validate Hosts and Clients with Ubuntu

When dealing with an extensive infrastructure and many team members, managing SSH keys for authentication can become unwieldy. However, SSH can utilize certificates in order to sign and validate user and host credentials to allow a seamless experience. In this guide, we’ll learn how to set this up using three Ubuntu 12.04 VPS instances.

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