Ubuntu 24.04

Common Problems 116547

Ubuntu 24.04 LTS – root filesystem full due to journal growth – Fix & Prevention

🟠 High   ⏱ 5–30 min  Last verified: 26 November 2024 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 […]

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Common Problems 116539

Ubuntu 24.04 LTS Timeshift Restore Leaves Broken Package States

🟡 Medium   ⏱ 5–30 min  Last verified: 26 November 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 […]

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Common Problems 116417

Ubuntu 24.04 LTS – apt update fails with missing GPG key – Fix & Prevention

🟠 High   ⏱ 5–30 min  Last verified: 26 November 2024 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 […]

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Ubuntu 24.04 — amavisd-new — vulnerability — patch and remediation guide — diagnosis and fix on Ubuntu 24.04

Ubuntu 24.04 — amavisd-new — vulnerability — patch and remediation guide

🟢 Low   ⏱ 5–15 min  Last verified: 26 November 2024 Affected versions: Ubuntu 24.04 (noble) 📖 ~4 min read  •  Source: Ubuntu Security Notice USN-6790-1 Related CVEs: CVE-2024-28054 Upstream summary: It was discovered that amavisd-new incorrectly handled certain MIME email messages with multiple boundary parameters. A remote attacker could possibly use this issue to […]

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Common Problems 116516

Ubuntu 24.04 LTS – Root filesystem full under /var – Fix & Prevention

🟠 High   ⏱ 5–30 min  Last verified: 25 November 2024 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 […]

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How to Secure Nginx with Let's Encrypt SSL on Ubuntu 24.04 — step-by-step Linux tutorial on Progressive Robot

How to Install Apache on Ubuntu 24.04

Apache HTTP Server is one of the most popular web servers in the world. This guide installs and starts Apache on Ubuntu 24.04 LTS and verifies that it is serving content correctly. Tested and valid on: Ubuntu 24.04 LTS Prerequisites Ubuntu 24.04 LTS server A user with sudo privileges UFW firewall configured Step 1 – […]

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Ubuntu 24.04 — provd — multiple vulnerabilities (2 CVEs) — patch and remediation guide — diagnosis and fix on Ubuntu 24.04

Ubuntu 24.04 — provd — multiple vulnerabilities (2 CVEs) — patch and remediation guide

🟢 Low   ⏱ 5–15 min  Last verified: 22 November 2024 Affected versions: Ubuntu 24.04 (noble) 📖 ~4 min read  •  Source: Ubuntu Security Notice USN-6912-1 Related CVEs: CVE-2024-6714 https://bugs.launchpad.net/ubuntu/+source/provd/+bug/2071574 Upstream summary: James Henstridge discovered that provd incorrectly handled environment variables. A local attacker could possibly use this issue to run arbitrary programs and escalate […]

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Ubuntu 24.04 — sssd — vulnerability — patch and remediation guide — diagnosis and fix on Ubuntu 24.04

Ubuntu 24.04 — sssd — vulnerability — patch and remediation guide

🟢 Low   ⏱ 5–15 min  Last verified: 19 November 2024 Affected versions: Ubuntu 24.04 (noble) 📖 ~4 min read  •  Source: Ubuntu Security Notice USN-6836-1 Related CVEs: CVE-2023-3758 Upstream summary: It was discovered that SSSD did not always correctly apply the GPO policy for authenticated users, contrary to expectations. This could result in improper […]

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Common Problems 116490

Ubuntu 24.04 LTS – Snap downloads are stuck or very slow – Fix & Prevention

🟡 Medium   ⏱ 5–30 min  Last verified: 16 November 2024 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 […]

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How to Set Up Two-Factor Authentication (2FA) for SSH on Ubuntu 24.04 — step-by-step Linux tutorial on Progressive Robot

How to Detect Rootkits with rkhunter on Ubuntu 24.04

rkhunter (Rootkit Hunter) scans Linux servers for rootkits, backdoors, and local exploits by checking for known malicious files, wrong file permissions, and hidden processes. This guide installs and configures rkhunter on Ubuntu 24.04 LTS. Tested and valid on: Ubuntu 24.04 LTS Prerequisites Ubuntu 24.04 LTS server A user with sudo privileges Step 1 – Install […]

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