Linux

Arch Linux — inetutils — multiple vulnerabilities (2 CVEs) — patch and remediation guide — diagnosis and fix on Arch Linux

Arch Linux — inetutils — multiple vulnerabilities (2 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-202106-20 Related CVEs: CVE-2020-10188 CVE-2019-0053 Upstream summary: Type: arbitrary code execution. Status: Fixed. Affected: 1.9.4-9. Fixed in: 2.0-1. Group: AVG-1003. Table of contents Symptom & Impact Environment & Reproduction Root […]

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Common Problems 117621

Ubuntu 20.04 LTS – Certbot renewal fails because port 80 is in use – Fix & Prevention

🟡 Medium   ⏱ 5–30 min  Last verified: 8 December 2020 Affected versions: Ubuntu 20.04 LTS 📖 ~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 115038

RHEL 8 tuned Profile Causes Unexpected CPU Throttling

🟡 Medium   ⏱ 5–30 min  Last verified: 8 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 Perform Server-Side OCR on PDFs and Images — step-by-step Linux tutorial on Progressive Robot

How to Perform Server-Side OCR on PDFs and Images

Optical Character Recognition, or OCR, is primarily used to turn text from scanned images into embedded text. Many modern desktop and mobile applications and scanner software stacks have some OCR functionality built in, and most circulating PDFs have text embedded. However, you may still encounter documents or images that contain significant amounts of non-embedded text which cannot be automatically extracted. This tutorial will cover setting up an OCR pipeline.

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How to Install Rsnapshot on Ubuntu 12.04 — step-by-step Linux tutorial on Progressive Robot

How to Install Rsnapshot on Ubuntu 12.04

In this article, we describe how to install and configure Rsnapshot in Ubuntu. Rsnapshot is a remote backup solution based on the rsync protocol which can be used to create scheduled, incremental backups.

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How To Install Jenkins on Ubuntu 18.04 — step-by-step Linux tutorial on Progressive Robot

How To Install Jenkins on Ubuntu 18.04

Jenkins is an open-source automation server that automates the repetitive technical tasks involved in the continuous integration and delivery of software. In this tutorial, you will install Jenkins by adding its Debian package repository, and using that repository to install the package with `apt`.

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Настройка аутентификации на базе ключей SSH на сервере Linux — step-by-step Linux tutorial on Progressive Robot

Настройка аутентификации на базе ключей SSH на сервере Linux

SSH или защищенная оболочка — самый распространенный способ администрирования удаленных серверов Linux. Хотя демон поддерживает аутентификацию на базе паролей, возможность доступа к защищенной паролем учетной записи через сеть может сделать ваш сервер уязвимым к атакам методом перебора. В этом учебном руководстве мы продемонстрируем, как настраивать сервер с использованием ключей SSH, которые представляют собой рекомендованный метод аутентификации. Злоумышленникам намного сложнее обойти такую за

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

Oracle Linux 8 — sqlite — vulnerability — patch and remediation guide (ELSA-2020-4442)

🟡 Medium   ⏱ 10–30 min  Last verified: 8 December 2020 Affected versions: Oracle Linux 8 📖 ~4 min read  •  Source: ELSA advisory ELSA-2020-4442 Related CVEs: CVE-2020-13631 CVE-2020-13632 CVE-2019-5018 CVE-2020-9327 CVE-2019-16168 CVE-2019-20218 Table of contents Symptom & Impact Environment & Reproduction Root Cause Analysis Quick Triage Step-by-Step Diagnosis Solution – Primary Fix Solution – […]

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Oracle Linux 8 — spice-vdagent — security and stability fixes — required update — diagnosis and fix on Oracle Linux 8

Oracle Linux 8 — spice-vdagent — security and stability fixes — required update (ELSA-2021-1791)

🟡 Medium   ⏱ 10–30 min  Last verified: 7 December 2020 Affected versions: Oracle Linux 8 📖 ~4 min read  •  Source: ELSA advisory ELSA-2021-1791 Related CVEs: CVE-2020-25650 CVE-2020-25651 CVE-2020-25652 CVE-2020-25653 Table of contents Symptom & Impact Environment & Reproduction Root Cause Analysis Quick Triage Step-by-Step Diagnosis Solution – Primary Fix Solution – Alternative Approaches […]

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