How To Get Started with Silex on Ubuntu 14.04
Silex is a PHP micro-framework built on Symfony2 components. It can be used to build small websites and large applications alike. It is concise, extensible, and testable.
Ubuntu 20.04 LTS Service Enters Crash Loop
🟡 Medium ⏱ 5–30 min Last verified: 1 January 2025 📖 ~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 […]
Ubuntu 22.04 reboot required file persists after updates
🟡 Medium ⏱ 5–30 min Last verified: 1 January 2025 📖 ~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 […]
Ubuntu 24.04 LTS – cloud-init hangs and delays first boot – Fix & Prevention
🟠 High ⏱ 5–30 min Last verified: 1 January 2025 Affected versions: Ubuntu 24.04 LTS 📖 ~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 […]
Ubuntu 24.04 LTS – custom nftables rules disappear after reboot
🟡 Medium ⏱ 5–30 min Last verified: 1 January 2025 Affected versions: Ubuntu 24.04 LTS Ubuntu 24.04 Ubuntu 24.04.1 📖 ~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 […]
How to Secure MySQL 8.0 on Ubuntu 24.04
A default MySQL 8.0 installation has several security weaknesses that should be addressed before going to production. This guide walks through MySQL hardening best practices on Ubuntu 24.04 LTS. Tested and valid on: Ubuntu 24.04 LTS Prerequisites Ubuntu 24.04 LTS server with MySQL 8.0 installed A user with sudo privileges Step 1 – Run mysql_secure_installation […]
Ubuntu 22.04 — cyrus-imapd — multiple vulnerabilities (3 CVEs) — patch and remediation guide
🟡 Medium ⏱ 10–30 min Last verified: 31 December 2024 Affected versions: Ubuntu 22.04 (jammy) 📖 ~4 min read • Source: Ubuntu Security Notice USN-7224-1 Related CVEs: CVE-2019-18928 CVE-2021-33582 CVE-2024-34055 Upstream summary: It was discovered that non-authentication-related HTTP requests could be interpreted in an authentication context by a Cyrus IMAP Server when multiple requests […]
Ubuntu 24.04 — plantuml — vulnerability — patch and remediation guide
🟢 Low ⏱ 5–15 min Last verified: 31 December 2024 Affected versions: Ubuntu 24.04 (noble) 📖 ~4 min read • Source: Ubuntu Security Notice USN-7353-1 Related CVEs: CVE-2022-1231 Upstream summary: Tobias S. Fink discovered that PlantUML was susceptible to cross-site scripting attacks (XSS) in instances where SVG images were rendered. An attacker could possibly […]
Ubuntu 18.04 — editorconfig-core — multiple vulnerabilities (2 CVEs) — patch and remediation guide
🟢 Low ⏱ 5–15 min Last verified: 31 December 2024 Affected versions: Ubuntu 18.04 (bionic) 📖 ~4 min read • Source: Ubuntu Security Notice USN-7168-1 Related CVEs: CVE-2023-0341 CVE-2024-53849 Upstream summary: It was discovered that EditorConfig improperly managed memory when handling certain inputs, leading to overflows. An attacker could possibly use these issues to […]
Ubuntu 24.04 LTS Release Upgrade Stuck at Calculating Changes
🟡 Medium ⏱ 5–30 min Last verified: 30 December 2024 📖 ~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 […]
