DKIM, SPF, and DMARC are email authentication standards that prevent spoofing and improve email deliverability. This guide configures all three on a Postfix server on Ubuntu 24.04 LTS. Tested and valid on: Ubuntu 24.04 LTS Prerequisites Ubuntu 24.04 LTS server Postfix installed and running Access to your domain DNS records A user with sudo privileges […]
🔴 Critical ⏱ 5–30 min Last verified: 1 August 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 […]
🟠 High ⏱ 5–30 min Last verified: 1 August 2025 Affected versions: 24.04 📖 ~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 […]
🟠 High ⏱ 5–30 min Last verified: 1 August 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 […]
PHP-FPM (FastCGI Process Manager) provides a fast interface between PHP and web servers like Nginx. This guide explains how to install, configure, and tune PHP 8.3-FPM for production use with Nginx on Ubuntu 24.04 LTS. Tested and valid on: Ubuntu 24.04 LTS Prerequisites Ubuntu 24.04 LTS server Nginx installed A user with sudo privileges Step […]
🟠 High ⏱ 5–30 min Last verified: 31 July 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 […]
🟠 High ⏱ 5–30 min Last verified: 31 July 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 […]
🟢 Low ⏱ 5–15 min Last verified: 30 July 2025 Affected versions: Ubuntu 24.04 (noble) 📖 ~4 min read • Source: Ubuntu Security Notice USN-7356-1 Related CVEs: CVE-2024-34402 CVE-2024-34403 Upstream summary: It was discovered that uriparser did not correctly handle certain inputs, which could lead to an integer overflow. An attacker could possibly use […]
🟢 Low ⏱ 5–15 min Last verified: 29 July 2025 Affected versions: Ubuntu 24.04 (noble) 📖 ~4 min read • Source: Ubuntu Security Notice USN-7972-1 Related CVEs: CVE-2025-15536 Upstream summary: It was discovered that OpenCC incorrectly handled truncated UTF-8 input. An attacker could possibly use this issue to cause OpenCC to crash, resulting in […]
🟡 Medium ⏱ 10–30 min Last verified: 29 July 2025 Affected versions: Ubuntu 24.04 (noble) 📖 ~4 min read • Source: Ubuntu Security Notice USN-7572-1 Related CVEs: CVE-2024-28246 CVE-2024-28245 CVE-2025-23207 CVE-2024-28243 Upstream summary: Juho Forsén discovered that KaTeX did not correctly handle certain inputs, which could lead to an infinite loop. If a user […]
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