ubuntu

Ubuntu 14.04 — libsndfile — multiple vulnerabilities (20 CVEs) — patch and remediation guide — diagnosis and fix on Ubuntu 14.04

Ubuntu 14.04 — libsndfile — multiple vulnerabilities (20 CVEs) — patch and remediation guide

🟠 High   ⏱ 15–60 min  Last verified: 17 November 2024 Affected versions: Ubuntu 14.04 (trusty) 📖 ~4 min read  •  Source: Ubuntu Security Notice USN-7273-1 Related CVEs: CVE-2021-4156 CVE-2024-50612 CVE-2022-33065 CVE-2021-3246 CVE-2017-12562 CVE-2017-14245 CVE-2017-14246 CVE-2017-14634  +12 more Upstream summary: It was discovered that libsndfile incorrectly handled memory when executing its FLAC codec. If a […]

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Common Problems 117486

Ubuntu 20.04 No Sound Output

🟡 Medium   ⏱ 5–30 min  Last verified: 16 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 116909

Ubuntu 22.04 LTS – apt update shows NO_PUBKEY for repository signatures

🟠 High   ⏱ 5–30 min  Last verified: 16 November 2024 Affected versions: Ubuntu 22.04 LTS Ubuntu 22.04 Ubuntu 22.04.4 📖 ~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 […]

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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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How to Manage Docker Images and Containers on Ubuntu 24.04 — step-by-step Linux tutorial on Progressive Robot

How to Set Up a Private Docker Registry on Ubuntu 24.04

A private Docker registry lets you store and distribute custom Docker images within your organisation without sending them to Docker Hub. This guide sets up a private Docker registry with TLS and basic authentication on Ubuntu 24.04 LTS. Tested and valid on: Ubuntu 24.04 LTS Prerequisites Ubuntu 24.04 LTS server Docker Engine and Docker Compose […]

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Common Problems 116525

Ubuntu 24.04 LTS – no sound output with PipeWire – Fix & Prevention

🟡 Medium   ⏱ 5–30 min  Last verified: 15 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 — klibc — multiple vulnerabilities (5 CVEs) — patch and remediation guide — diagnosis and fix on Ubuntu 24.04

Ubuntu 24.04 — klibc — multiple vulnerabilities (5 CVEs) — patch and remediation guide

🟡 Medium   ⏱ 10–30 min  Last verified: 14 November 2024 Affected versions: Ubuntu 24.04 (noble) 📖 ~4 min read  •  Source: Ubuntu Security Notice USN-7959-1 Related CVEs: CVE-2016-9843 CVE-2016-9840 CVE-2016-9841 CVE-2018-25032 CVE-2022-37434 Upstream summary: It was discovered that zlib, vendored in klibc, did not properly handle integer arithmetic. An attacker could possibly use this […]

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Ubuntu 16.04 — cloud-init — multiple vulnerabilities (4 CVEs) — patch and remediation guide — diagnosis and fix on Ubuntu 16.04

Ubuntu 16.04 — cloud-init — multiple vulnerabilities (4 CVEs) — patch and remediation guide

🟡 Medium   ⏱ 10–30 min  Last verified: 13 November 2024 Affected versions: Ubuntu 16.04 (xenial) 📖 ~4 min read  •  Source: Ubuntu Security Notice USN-7677-1 Related CVEs: CVE-2024-6174 CVE-2024-11584 CVE-2023-1786 https://bugs.launchpad.net/cloud-init/+bug/2013967 Upstream summary: Harry Sintonen discovered that the hotplugd socket in cloud-init was world writable. An attacker could possibly use this issue to send […]

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Ubuntu 20.04 — nova — multiple vulnerabilities (11 CVEs) — patch and remediation guide — diagnosis and fix on Ubuntu 20.04

Ubuntu 20.04 — nova — multiple vulnerabilities (11 CVEs) — patch and remediation guide

🟠 High   ⏱ 15–60 min  Last verified: 13 November 2024 Affected versions: Ubuntu 20.04 (focal) 📖 ~4 min read  •  Source: Ubuntu Security Notice USN-6911-1 Related CVEs: CVE-2024-40767 CVE-2024-32498 https://launchpad.net/bugs/2020111 https://launchpad.net/bugs/2019460 CVE-2023-2088 CVE-2015-9543 CVE-2017-18191 CVE-2020-17376  +3 more Upstream summary: Arnaud Morin discovered that Nova incorrectly handled certain raw format images. An authenticated user could […]

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