Linux

Scaling Ruby on Rails: Setting Up A Dedicated PostgreSQL Server (Part 3) — step-by-step Linux tutorial on Progressive Robot

Scaling Ruby on Rails: Setting Up A Dedicated PostgreSQL Server (Part 3)

In this installation of our the cloud provider Scaling-Rails series, we are going to find out how to build a PostgreSQL server from scratch to use as the database persistence layer for Ruby-on-Rails web-applications. Continuing, we are going to see how to connect our Rails application servers with the database by making the necessary configuration changes.

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Debian 11 — xsok — vulnerability — patch and remediation guide — diagnosis and fix on Debian 11

Debian 11 — xsok — vulnerability — patch and remediation guide

🟢 Low   ⏱ 5–15 min  Last verified: 27 December 2022 Affected versions: Debian 11 (bullseye) 📖 ~4 min read  •  Source: Debian Security Tracker Related CVEs: CVE-2003-0949 Upstream summary: xsok 1.02 does not properly drop privileges before finding and executing the "gunzip" program, which allows local users to execute arbitrary commands. Table of contents […]

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How To Use SQLite with Node.js on Ubuntu 22.04 — step-by-step Linux tutorial on Progressive Robot

How To Use SQLite with Node.js on Ubuntu 22.04

In this tutorial, readers will use node-sqlite3 to create a connection with an SQLite database. Next, they’ll create a Node.js app that creates a table and insert data into the database. Finally, they’ll modify the app to use node-sqlite3 to retrieve, update, and delete data from the database.

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Oracle Linux 8 — Unbreakable Enterprise kernel — vulnerability — patch and remediation guide — diagnosis and fix on Oracle Linux 8

Oracle Linux 8 — Unbreakable Enterprise kernel — vulnerability — patch and remediation guide (ELSA-2022-9689)

🟠 High   ⏱ 15–60 min  Last verified: 27 December 2022 Affected versions: Oracle Linux 8 📖 ~4 min read  •  Source: ELSA advisory ELSA-2022-9689 Related CVEs: CVE-2022-2588 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 Install Nginx on CentOS 8 — step-by-step Linux tutorial on Progressive Robot

How to Install Nginx on CentOS 8

Nginx is one of the most popular web servers in the world and is responsible for hosting some of the largest and highest-traffic sites on the internet. It is more resource-friendly than Apache in most cases and can be used as a web server or reverse proxy. In this guide, we’ll discuss how to install Nginx on a CentOS 8 server.

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Oracle Linux 9 — firefox — vulnerability — patch and remediation guide — diagnosis and fix on Oracle Linux 9

Oracle Linux 9 — firefox — vulnerability — patch and remediation guide (ELSA-2022-6700)

🟠 High   ⏱ 15–60 min  Last verified: 27 December 2022 Affected versions: Oracle Linux 9 📖 ~4 min read  •  Source: ELSA advisory ELSA-2022-6700 Related CVEs: CVE-2022-40958 CVE-2022-40957 CVE-2022-40962 CVE-2022-40959 CVE-2022-40960 CVE-2022-40956 Table of contents Symptom & Impact Environment & Reproduction Root Cause Analysis Quick Triage Step-by-Step Diagnosis Solution – Primary Fix Solution – […]

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Common Problems 115098

RHEL 8 MariaDB Service Fails After Parameter Mismatch Change

🟡 Medium   ⏱ 5–30 min  Last verified: 26 December 2022 📖 ~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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Debian 11 — screenie — vulnerability — patch and remediation guide — diagnosis and fix on Debian 11

Debian 11 — screenie — vulnerability — patch and remediation guide

🟢 Low   ⏱ 5–15 min  Last verified: 26 December 2022 Affected versions: Debian 11 (bullseye) 📖 ~4 min read  •  Source: Debian Security Tracker Related CVEs: CVE-2008-5371 Upstream summary: screenie in screenie 1.30.0 allows local users to overwrite arbitrary files via a symlink attack on a /tmp/.screenie.##### temporary file. Table of contents Symptom & […]

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openSUSE Tumbleweed — python38-PyJWT — vulnerability — patch and remediation guide — diagnosis and fix on openSUSE Tumbleweed

openSUSE Tumbleweed — python38-PyJWT — vulnerability — patch and remediation guide

🟠 High   ⏱ 15–60 min  Last verified: 25 May 2026 Affected versions: openSUSE Tumbleweed 📖 ~4 min read  •  Source: SUSE advisory openSUSE-SU-2025:14987-1 (see also SUSE bugzilla) Related CVEs: CVE-2022-29217 Upstream summary: PyJWT is a Python implementation of RFC 7519. PyJWT supports multiple different JWT signing algorithms. With JWT, an attacker submitting the JWT […]

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Debian 11 — prosody-modules — vulnerability — patch and remediation guide — diagnosis and fix on Debian 11

Debian 11 — prosody-modules — vulnerability — patch and remediation guide

🟢 Low   ⏱ 5–15 min  Last verified: 26 December 2022 Affected versions: Debian 11 (bullseye) 📖 ~4 min read  •  Source: Debian Security Tracker Related CVEs: CVE-2020-8086 Upstream summary: The mod_auth_ldap and mod_auth_ldap2 Community Modules through 2020-01-27 for Prosody incompletely verify the XMPP address passed to the is_admin() function. This grants remote entities admin-only […]

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