Linux

How to Set Up Galera Cluster for MariaDB on CentOS Stream 9 — step-by-step CentOS Stream 9 tutorial on Progressive Robot

How to Set Up Galera Cluster for MariaDB on CentOS Stream 9

Introduction Setting up set up galera cluster for mariadb on centos stream 9 on a CentOS Stream 9 server is a common task for system administrators, DevOps engineers, and site reliability engineers. This guide explains how to Set Up Galera Cluster for MariaDB on CentOS Stream 9, with all the commands you need, the SELinux […]

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AlmaLinux 8 — rhn-custom-info — vulnerability — patch and remediation guide — diagnosis and fix on AlmaLinux 8

AlmaLinux 8 — rhn-custom-info — vulnerability — patch and remediation guide

🟡 Medium   ⏱ 10–30 min  Last verified: 25 May 2026 Affected versions: AlmaLinux 8 📖 ~4 min read  •  Source: AlmaLinux ALSA ALBA-2019:3355 Upstream summary: For detailed information on changes in this release, see the AlmaLinux Release Notes linked from the References section. Table of contents Symptom & Impact Environment & Reproduction Root Cause […]

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AlmaLinux 8 — python-configshell — vulnerability — patch and remediation guide — diagnosis and fix on AlmaLinux 8

AlmaLinux 8 — python-configshell — vulnerability — patch and remediation guide

🟡 Medium   ⏱ 10–30 min  Last verified: 25 May 2026 Affected versions: AlmaLinux 8 📖 ~4 min read  •  Source: AlmaLinux ALSA ALEA-2020:4506 Upstream summary: For detailed information on changes in this release, see the AlmaLinux Release Notes linked from the References section. Table of contents Symptom & Impact Environment & Reproduction Root Cause […]

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Debian 11 — golang-github-revel-revel — vulnerability — patch and remediation guide — diagnosis and fix on Debian 11

Debian 11 — golang-github-revel-revel — vulnerability — patch and remediation guide

🟢 Low   ⏱ 5–15 min  Last verified: 8 December 2021 Affected versions: Debian 11 (bullseye) 📖 ~4 min read  •  Source: Debian Security Tracker Related CVEs: CVE-2020-36568 Upstream summary: Unsanitized input in the query parser in github.com/revel/revel before v1.0.0 allows remote attackers to cause resource exhaustion via memory allocation. Table of contents Symptom & […]

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Debian 11 — transmission — multiple vulnerabilities (10 CVEs) — patch and remediation guide — diagnosis and fix on Debian 11

Debian 11 — transmission — multiple vulnerabilities (10 CVEs) — patch and remediation guide

🟠 High   ⏱ 15–60 min  Last verified: 8 December 2021 Affected versions: Debian 11 (bullseye) 📖 ~4 min read  •  Source: Debian Security Tracker Related CVEs: CVE-2009-1757 CVE-2010-0012 CVE-2010-0748 CVE-2010-0749 CVE-2010-1853 CVE-2012-4037 CVE-2012-6129 CVE-2014-4909  +2 more Upstream summary: Cross-site request forgery (CSRF) vulnerability in Transmission 1.5 before 1.53 and 1.6 before 1.61 allows remote […]

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Debian 11 — rubygems — multiple vulnerabilities (20 CVEs) — patch and remediation guide — diagnosis and fix on Debian 11

Debian 11 — rubygems — multiple vulnerabilities (20 CVEs) — patch and remediation guide

🟠 High   ⏱ 15–60 min  Last verified: 8 December 2021 Affected versions: Debian 11 (bullseye) 📖 ~4 min read  •  Source: Debian Security Tracker Related CVEs: CVE-2012-2125 CVE-2012-2126 CVE-2013-4287 CVE-2013-4363 CVE-2017-0899 CVE-2017-0900 CVE-2017-0901 CVE-2017-0902  +12 more Upstream summary: RubyGems before 1.8.23 can redirect HTTPS connections to HTTP, which makes it easier for remote attackers […]

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Debian 11 — unadf — multiple vulnerabilities (2 CVEs) — patch and remediation guide — diagnosis and fix on Debian 11

Debian 11 — unadf — multiple vulnerabilities (2 CVEs) — patch and remediation guide

🟢 Low   ⏱ 5–15 min  Last verified: 8 December 2021 Affected versions: Debian 11 (bullseye) 📖 ~4 min read  •  Source: Debian Security Tracker Related CVEs: CVE-2016-1243 CVE-2016-1244 Upstream summary: Stack-based buffer overflow in the extractTree function in unADF allows remote attackers to execute arbitrary code via a long pathname. Table of contents Symptom […]

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How To Set Up SSL Certificates With PhpMyAdmin On An Ubuntu 12.04 VPS — step-by-step Linux tutorial on Progressive Robot

How To Set Up SSL Certificates With PhpMyAdmin On An Ubuntu 12.04 VPS

PhpMyAdmin is a web-based front end used to configure MySQL databases in a graphical interface. While this software is very useful and can make managing databases easy, without SSL and the proper precautions, you could be exposing sensitive data to the internet. This guide shows you how to better secure your PhpMyAdmin installation.

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AlmaLinux 8 — jetty — vulnerability — patch and remediation guide — diagnosis and fix on AlmaLinux 8

AlmaLinux 8 — jetty — vulnerability — patch and remediation guide

🟡 Medium   ⏱ 10–30 min  Last verified: 25 May 2026 Affected versions: AlmaLinux 8 📖 ~4 min read  •  Source: AlmaLinux ALSA ALBA-2020:5097 Upstream summary: Eclipse is an integrated development environment (IDE). The metadata for the eclipse:rhel8 module has been updated to remove the following unused profiles: c everything To check whether you have […]

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How to Install and Configure Postfix Mail Server on RHEL 7 — step-by-step RHEL 7 tutorial on Progressive Robot

How to Install and Configure Postfix Mail Server on RHEL 7

How to Install and Configure Postfix Mail Server on RHEL 7 Postfix is a high-performance, security-focused Mail Transfer Agent (MTA) that is installed by default on many RHEL 7 systems. It handles the sending, receiving, and routing of email using the SMTP protocol. Whether you are setting up a server to send application alerts, relay […]

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