Linux

Common Problems 115111

RHEL 8 sudoers Syntax Error Breaking Privileged Access

🟡 Medium   ⏱ 5–30 min  Last verified: 16 November 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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Ubuntu 18.04 — glib-networking — vulnerability — patch and remediation guide — diagnosis and fix on Ubuntu 18.04

Ubuntu 18.04 — glib-networking — vulnerability — patch and remediation guide

🟢 Low   ⏱ 5–15 min  Last verified: 16 November 2020 Affected versions: Ubuntu 18.04 (bionic) 📖 ~4 min read  •  Source: Ubuntu Security Notice USN-4405-1 Related CVEs: CVE-2020-13645 Upstream summary: It was discovered that glib-networking skipped hostname certificate verification if the application failed to specify the server identity. A remote attacker could use this […]

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How To Publish Books with Booktype on Debian 8 — step-by-step Linux tutorial on Progressive Robot

How To Publish Books with Booktype on Debian 8

Booktype is a specialized content management system for the production of books, including real, good-looking books you can hold in your hands. You can produce Booktype output in PDF, EPUB, MOBI, XML, and HTML formats ready for book stores or the open web. This tutorial shows you have to install it on Debian 8.

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How to Configure the System Timezone on Debian 9 — step-by-step Debian 9 tutorial on Progressive Robot

How to Configure the System Timezone on Debian 9

Introduction Deploying configure the system timezone on debian 9 on a Debian 9 Stretch machine is straightforward thanks to Debian’s policy-compliant packaging. Unlike rpm-based distributions, Debian stores configuration helpers in /etc/default/, uses update-rc.d for older init scripts, and provides dpkg-reconfigure for interactive package configuration. This tutorial stays on the systemd path throughout. Prerequisites You will […]

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How To Install and Use Composer on Debian 8 — step-by-step Linux tutorial on Progressive Robot

How To Install and Use Composer on Debian 8

Composer is a popular dependency management tool for PHP, created to facilitate installation and update of project dependencies. It will check which other packages a specific project depends on and install them for you, using the appropriate versions according to the project requirements.

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Como instalar e configurar o Postfix no Ubuntu 18.04 — step-by-step Linux tutorial on Progressive Robot

Como instalar e configurar o Postfix no Ubuntu 18.04

O Postfix é um Agente de Transferência de E-mail (MTA) de código aberto popular que pode ser usado para rotear e entregar e-mails em um sistema Linux. Estima-se que cerca de 25% dos servidores públicos de e-mail na internet executem o Postfix. Neste guia, vamos ensinar como…

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

Oracle Linux 8 — sssd security, bug fix, and — enhancement update — new behaviour and fixes (ELSA-2019-3651)

🟢 Low   ⏱ 5–15 min  Last verified: 15 November 2020 Affected versions: Oracle Linux 8 📖 ~4 min read  •  Source: ELSA advisory ELSA-2019-3651 Related CVEs: CVE-2018-16838 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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