How To Set Up a Private Docker Registry on Ubuntu 14.04
Publish to and pull Docker images from your own private Docker registry.
Alpine Linux edge — hunspell — vulnerability — patch and remediation guide
🟡 Medium ⏱ 10–30 min Last verified: 25 May 2026 Affected versions: Alpine Linux edge / fixed in 1.7.0-r1 📖 ~4 min read • Source: Alpine secdb entry — hunspell 1.7.0-r1 Related CVEs: CVE-2019-16707 Upstream summary: Alpine main repository for vedge ships hunspell 1.7.0-r1 which addresses CVE-2019-16707. Table of contents Symptom & Impact Environment […]
FreeBSD 12 — postgresql93-server — multiple vulnerabilities (20 CVEs) — patch and remediation guide
🟠 High ⏱ 15–60 min Last verified: 10 November 2019 Affected versions: FreeBSD 12 📖 ~4 min read • Source: FreeBSD VuXML VuXML topic: PostgreSQL — SQL injection in pg_upgrade and pg_dump Related CVEs: CVE-2014-8161 CVE-2015-0241 CVE-2015-0242 CVE-2015-0243 CVE-2015-0244 CVE-2015-3165 CVE-2015-3166 CVE-2015-3167 +12 more Upstream summary: The PostgreSQL project reports: CVE-2018-16850: SQL injection in […]
How To Secure MongoDB on Ubuntu 18.04
MongoDB doesn’t have authentication enabled by default, meaning that any user with access to the server where the database is installed can add and delete data without restriction. In order to secure this vulnerability, this tutorial will walk you through creating an administrative user and enabling authentication. You’ll then test to confirm that only this administrative user has access to the database.
FreeBSD 12 — mediawiki — multiple vulnerabilities (20 CVEs) — patch and remediation guide
🟠 High ⏱ 15–60 min Last verified: 10 November 2019 Affected versions: FreeBSD 12 📖 ~4 min read • Source: FreeBSD VuXML VuXML topic: mediawiki — multiple vulnerabilities Related CVEs: CAN-2005-4501 CVE-2006-1498 CVE-2007-4828 CVE-2008-5249 CVE-2008-5250 CVE-2008-5252 CVE-2010-1150 CVE-2011-0047 +12 more Upstream summary: Mediawiki reports: (T355538, CVE-2024-PENDING) SECURITY: XSS in edit summary parser. (T357760, CVE-2024-PENDING) […]
openSUSE Tumbleweed — ksh — vulnerability — patch and remediation guide
🟠 High ⏱ 15–60 min Last verified: 25 May 2026 Affected versions: openSUSE Tumbleweed 📖 ~4 min read • Source: SUSE advisory SUSE-SU-2024:2756-1 (see also SUSE bugzilla) Related CVEs: CVE-2019-14868 Upstream summary: In ksh version 20120801, a flaw was found in the way it evaluates certain environment variables. An attacker could use this flaw […]
How To Deploy a Rails App with Passenger and Nginx on Ubuntu 14.04
Deploy your Rails application with Passenger and Nginx on Ubuntu 14.04.
How to Use tmux for Terminal Multiplexing on RHEL 7
How to Use tmux for Terminal Multiplexing on RHEL 7 Every Linux administrator has experienced the frustration of losing a long-running process because an SSH connection dropped. tmux (terminal multiplexer) solves this problem by running your terminal sessions inside a persistent server process that survives disconnections. Beyond persistence, tmux allows you to split a single […]
RHEL 8 firewalld Zone Mismatch Blocks Application Port
🟡 Medium ⏱ 5–30 min Last verified: 9 November 2019 📖 ~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 […]
How to Install PostgreSQL on SLES 15
Introduction This tutorial covers How to Install PostgreSQL on SLES 15 on SLES 15. SLES 15 (SUSE Linux Enterprise Server 16) is SUSE’s enterprise-grade Linux distribution. It uses the zypper package manager, AppArmor for mandatory access control, and systemctl for service management. Step 1 — Install PostgreSQL zypper install -y postgresql-server postgresql Step 2 — […]