ubuntu

Ubuntu 20.04 — sane-backends — multiple vulnerabilities (8 CVEs) — patch and remediation guide — diagnosis and fix on Ubuntu 20.04

Ubuntu 20.04 — sane-backends — multiple vulnerabilities (8 CVEs) — patch and remediation guide

  • August 14, 2020
  • Linux
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🟡 Medium   ⏱ 10–30 min  Last verified: 14 August 2020 Affected versions: Ubuntu 20.04 (focal) 📖 ~4 min read  •  Source: Ubuntu Security Notice USN-4470-1 Related CVEs: CVE-2017-6318 CVE-2020-12861 CVE-2020-12862 CVE-2020-12863 CVE-2020-12864 CVE-2020-12865 CVE-2020-12866 CVE-2020-12867 Upstream summary: Kritphong Mongkhonvanit discovered that sane-backends incorrectly handled certain packets. A remote attacker could possibly use this issue […]

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Ubuntu 14.04 — ant — multiple vulnerabilities (2 CVEs) — patch and remediation guide — diagnosis and fix on Ubuntu 14.04

Ubuntu 14.04 — ant — multiple vulnerabilities (2 CVEs) — patch and remediation guide

  • August 14, 2020
  • Linux
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🟢 Low   ⏱ 5–15 min  Last verified: 14 August 2020 Affected versions: Ubuntu 14.04 (trusty) 📖 ~4 min read  •  Source: Ubuntu Security Notice USN-4874-1 Related CVEs: CVE-2020-1945 CVE-2018-10886 Upstream summary: It was discovered that Apache Ant created temporary files with insecure permissions. An attacker could use this vulnerability to read sensitive information leaked […]

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How To Configure WebDAV Access with Apache on Ubuntu 12.04 — step-by-step Linux tutorial on Progressive Robot

How To Configure WebDAV Access with Apache on Ubuntu 12.04

  • August 14, 2020
  • Linux
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WebDAV is a technology that allows you to share access and modify content directly through the regular HTTP protocol. This allows you easy file sharing capabilities built into your web server and the ability to collaboratively build a website. This guide will cover how to configure WebDAV on Ubuntu with the Apache web server.

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Common Problems 117439

Ubuntu 20.04 boot stuck in initramfs prompt

  • August 13, 2020
  • Linux
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🟡 Medium   ⏱ 5–30 min  Last verified: 13 August 2020 📖 ~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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Ubuntu 20.04でOpenVPNサーバーをセットアップ・設定する方法 — step-by-step Linux tutorial on Progressive Robot

Ubuntu 20.04でOpenVPNサーバーをセットアップ・設定する方法

  • August 12, 2020
  • Linux
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OpenVPNは、公開インターネット上でプライベートネットワークを安全に構築したり参加したりできるようにするオープンソースの仮想プライベートネットワーク（Virtual Private Network: VPN）アプリケーションです。　 このチュートリアルでは、Ellipic Curve Cryptography（ECC）を使用して、Ubuntu 20.04 （Focal server）にOpenVPNをインストールして設定する方法を学びます。 　また、Windows、macOS、iOS、Android、LinuxクライアントをVPNに接続する方法も学びます。

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Common Problems 119018

Ubuntu 14.04 LTS Inode Exhaustion Despite Free Disk Space

  • August 11, 2020
  • Linux
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🟡 Medium   ⏱ 5–30 min  Last verified: 11 August 2020 📖 ~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 117501

Ubuntu 20.04 LTS – memory pressure triggers OOM kills and random restarts – Fix & Prevention

  • August 11, 2020
  • Linux
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🟠 High   ⏱ 5–30 min  Last verified: 11 August 2020 Affected versions: Ubuntu 20.04 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 Real-Time Performance Monitoring with Netdata on Ubuntu 16.04 — step-by-step Linux tutorial on Progressive Robot

How to Set Up Real-Time Performance Monitoring with Netdata on Ubuntu 16.04

  • August 11, 2020
  • Linux
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Netdata provides accurate performance monitoring through extensible web dashboards that visualise the processes and services on your Linux systems. It monitors metrics about CPU, memory, disks, networks, processes, and more. The steps in this tutorial cover everything you need to successfully set up one Ubuntu 16.04 server running Netdata using its built-in web server or, optionally, using Nginx.

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Ubuntu 18.04 — grub2 — multiple vulnerabilities (10 CVEs) — patch and remediation guide — diagnosis and fix on Ubuntu 18.04

Ubuntu 18.04 — grub2 — multiple vulnerabilities (10 CVEs) — patch and remediation guide

  • August 11, 2020
  • Linux
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🟠 High   ⏱ 15–60 min  Last verified: 11 August 2020 Affected versions: Ubuntu 18.04 (bionic) 📖 ~4 min read  •  Source: Ubuntu Security Notice USN-4432-2 Related CVEs: https://launchpad.net/bugs/1889556 https://wiki.ubuntu.com/SecurityTeam/KnowledgeBase/GRUB2SecureBootBypass CVE-2020-10713 CVE-2020-14308 CVE-2020-14309 CVE-2020-14310 CVE-2020-14311 CVE-2020-15705  +2 more Upstream summary: USN-4432-1 fixed vulnerabilities in GRUB2 affecting Secure Boot environments. Unfortunately, the update introduced regressions for […]

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