Ubuntu 16.04

Ubuntu 16.04 — evince — multiple vulnerabilities (6 CVEs) — patch and remediation guide — diagnosis and fix on Ubuntu 16.04

Ubuntu 16.04 — evince — multiple vulnerabilities (6 CVEs) — patch and remediation guide

🟡 Medium   ⏱ 10–30 min  Last verified: 16 June 2020 Affected versions: Ubuntu 16.04 (xenial) 📖 ~4 min read  •  Source: Ubuntu Security Notice USN-4067-1 Related CVEs: CVE-2019-1010006 https://launchpad.net/bugs/1794848 https://launchpad.net/bugs/1788929 CVE-2019-11459 CVE-2017-1000159 CVE-2017-1000083 Upstream summary: It was discovered that Evince incorrectly handled certain PDF files. An attacker could possibly use this issue to cause […]

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Common Problems 118536

Ubuntu 16.04 LTS – high CPU caused by kworker threads

🟠 High   ⏱ 5–30 min  Last verified: 15 June 2020 Affected versions: Ubuntu 16.04 LTS Ubuntu 16.04 Ubuntu 16.04.7 📖 ~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 118477

Ubuntu 16.04 LTS clock drift and NTP synchronization failures

🟡 Medium   ⏱ 5–30 min  Last verified: 15 June 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 16.04 — mqtt-client — vulnerability — patch and remediation guide — diagnosis and fix on Ubuntu 16.04

Ubuntu 16.04 — mqtt-client — vulnerability — patch and remediation guide

🟢 Low   ⏱ 5–15 min  Last verified: 13 June 2020 Affected versions: Ubuntu 16.04 (xenial) 📖 ~4 min read  •  Source: Ubuntu Security Notice USN-6685-1 Related CVEs: CVE-2019-0222 Upstream summary: It was discovered that mqtt-client incorrectly handled memory while parsing malformed MQTT frames. An attacker could possibly use this issue to cause a crash, […]

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Ubuntu 16.04 — libmatio — vulnerability — patch and remediation guide — diagnosis and fix on Ubuntu 16.04

Ubuntu 16.04 — libmatio — vulnerability — patch and remediation guide

🟢 Low   ⏱ 5–15 min  Last verified: 12 June 2020 Affected versions: Ubuntu 16.04 (xenial) 📖 ~4 min read  •  Source: Ubuntu Security Notice USN-5185-1 Related CVEs: CVE-2019-17533 Upstream summary: It was discovered that MATIO incorrectly handled certain inputs. An attacker could possibly use this issue to cause a denial of service or obtain […]

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How To Secure PostgreSQL Against Automated Attacks — step-by-step Linux tutorial on Progressive Robot

How To Secure PostgreSQL Against Automated Attacks

In this tutorial, we will show an essential first step toward mitigating the specific risk that can be created when configuring PostgreSQL to allow remote connections. While this an important first step, since servers can be compromised in other ways, we also recommend that you take additional measures to protect your data, outlined in the section, [Additional Security Considerations](#additional-security-configuration).

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How To Set Up a Node.js Application for Production on Ubuntu 16.04 — step-by-step Linux tutorial on Progressive Robot

How To Set Up a Node.js Application for Production on Ubuntu 16.04

Node.js is an open source JavaScript runtime environment for easily building server-side and networking applications. Node.js applications can be run at the command line but this guide focuses on running them as a service using PM2, so that they will automatically restart on reboot or failure, and can safely be used in a production environment.

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How To Install and Use Byobu for Terminal Management on Ubuntu 16.04 — step-by-step Linux tutorial on Progressive Robot

How To Install and Use Byobu for Terminal Management on Ubuntu 16.04

Byobu is an easy-to-use wrapper around the tmux (or screen) terminal multiplexer. This means that it makes it easy for you to open multiple windows and run multiple commands within a single terminal connection. This tutorial will cover how to install and configure Byobu as well as how to use its most common features.

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Common Problems 118481

Ubuntu 16.04 LTS – apt update fails with Hash Sum mismatch – Fix & Prevention

🟡 Medium   ⏱ 5–30 min  Last verified: 4 June 2020 Affected versions: Ubuntu 16.04 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 16.04 — golang-1.10 — vulnerability — patch and remediation guide — diagnosis and fix on Ubuntu 16.04

Ubuntu 16.04 — golang-1.10 — vulnerability — patch and remediation guide

🟢 Low   ⏱ 5–15 min  Last verified: 3 June 2020 Affected versions: Ubuntu 16.04 (xenial) 📖 ~4 min read  •  Source: Ubuntu Security Notice USN-4758-1 Related CVEs: CVE-2020-24553 Upstream summary: It was discovered that Go applications incorrectly handled uploaded content. If a user were tricked into visiting a malicious page, a remote attacker could […]

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