Linux

Ubuntu 18.04 — software-properties — vulnerability — patch and remediation guide — diagnosis and fix on Ubuntu 18.04

Ubuntu 18.04 — software-properties — vulnerability — patch and remediation guide

🟢 Low   ⏱ 5–15 min  Last verified: 14 September 2020 Affected versions: Ubuntu 18.04 (bionic) 📖 ~4 min read  •  Source: Ubuntu Security Notice USN-4457-1 Related CVEs: CVE-2020-15709 Upstream summary: Jason A. Donenfeld discovered that Software Properties incorrectly filtered certain escape sequences when displaying PPA descriptions. If a user were tricked into adding an […]

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Common Problems 115516

RHEL 7 systemctl StartLimitHit on Repeated Service Crashes

🟠 High   ⏱ 5–30 min  Last verified: 14 September 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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How to Set Up PostgreSQL Streaming Replication on Debian 10 — step-by-step Debian 10 tutorial on Progressive Robot

How to Set Up PostgreSQL Streaming Replication on Debian 10

Introduction Deploying set up postgresql streaming replication on debian 10 on a Debian 10 Buster 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 […]

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SLES 12 — xtrans — vulnerability — patch and remediation guide — diagnosis and fix on SLES 12

SLES 12 — xtrans — vulnerability — patch and remediation guide

🟡 Medium   ⏱ 10–30 min  Last verified: 14 September 2020 Affected versions: SLES 12 📖 ~4 min read  •  Source: SUSE advisory SUSE-SU-2023:3189-1 (see also SUSE bugzilla) Related CVEs: CVE-2020-25697 Upstream summary: A privilege escalation flaw was found in the Xorg-x11-server due to a lack of authentication for X11 clients. This flaw allows an […]

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How To Install the Apache Web Server on Ubuntu 20.04 [Quickstart] — step-by-step Linux tutorial on Progressive Robot

How To Install the Apache Web Server on Ubuntu 20.04 [Quickstart]

The Apache HTTP server is the most widely-used web server in the world. It provides many powerful features, including dynamically loadable modules, robust media support, and extensive integration with other popular software. In this guide, we’ll explain how to install an Apache web server on your Ubuntu 20.04 server.

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How To Install Linux, Nginx, MySQL, PHP (LEMP) stack On CentOS 7 — step-by-step Linux tutorial on Progressive Robot

How To Install Linux, Nginx, MySQL, PHP (LEMP) stack On CentOS 7

In this guide, we’ll get a LEMP stack installed on an CentOS 7 server. A LEMP software stack is a group of open source software that is typically installed together to enable a server to host dynamic websites and web apps. This term is actually an acronym which represents the Linux operating system, with the ENginx web server (which replaces the Apache component of a LAMP stack). The site data is stored in a MySQL database (using MariaDB), and dynamic content is processed by PHP.

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Debian 9 — vlc — multiple vulnerabilities (8 CVEs) — patch and remediation guide — diagnosis and fix on Debian 9

Debian 9 — vlc — multiple vulnerabilities (8 CVEs) — patch and remediation guide

🟡 Medium   ⏱ 10–30 min  Last verified: 14 September 2020 Affected versions: Debian 9 (stretch) 📖 ~4 min read  •  Source: Debian Security Tracker Related CVEs: CVE-2017-9300 CVE-2017-17670 CVE-2018-11529 CVE-2018-19857 CVE-2019-5439 CVE-2019-13602 CVE-2020-6071 CVE-2020-13428 Table of contents Symptom & Impact Environment & Reproduction Root Cause Analysis Quick Triage Step-by-Step Diagnosis Solution – Primary Fix […]

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