ubuntu

Ubuntu 14.04 — snapd — multiple vulnerabilities (10 CVEs) — patch and remediation guide — diagnosis and fix on Ubuntu 14.04

Ubuntu 14.04 — snapd — multiple vulnerabilities (10 CVEs) — patch and remediation guide

🟠 High   ⏱ 15–60 min  Last verified: 30 May 2022 Affected versions: Ubuntu 14.04 (trusty) 📖 ~4 min read  •  Source: Ubuntu Security Notice USN-5292-4 Related CVEs: https://bugs.launchpad.net/ubuntu/+source/snapd/+bug/1961365 https://bugs.launchpad.net/ubuntu/+source/snapd/+bug/1961791 CVE-2021-3155 CVE-2021-4120 CVE-2021-44730 CVE-2021-44731 CVE-2019-7303 https://launchpad.net/bugs/1812973  +2 more Upstream summary: USN-5292-1 fixed a vulnerability in snapd. Unfortunately that update introduced a regression that could break […]

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Common Problems 117030

Ubuntu 22.04 LTS PAM Configuration Error Locks Out Sudo Access

🟡 Medium   ⏱ 5–30 min  Last verified: 29 May 2022 📖 ~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 — node-json5 — vulnerability — patch and remediation guide — diagnosis and fix on Ubuntu 20.04

Ubuntu 20.04 — node-json5 — vulnerability — patch and remediation guide

🟢 Low   ⏱ 5–15 min  Last verified: 29 May 2022 Affected versions: Ubuntu 20.04 (focal) 📖 ~4 min read  •  Source: Ubuntu Security Notice USN-6758-1 Related CVEs: CVE-2022-46175 Upstream summary: It was discovered that the JSON5 parse method incorrectly handled the parsing of keys named \_\_proto\_\_. An attacker could possibly use this issue to […]

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How To Use BackupPC to Create a Backup Server on an Ubuntu 12.04 VPS — step-by-step Linux tutorial on Progressive Robot

How To Use BackupPC to Create a Backup Server on an Ubuntu 12.04 VPS

BackupPC is a mature backup program that can be configured to back up Linux and Windows machines. Because of its powerful and flexible configuration options, and its easy to use web-interface, this is a good solution for many users. This guide will cover how to install and configure BackupPC on an Ubuntu 12.04 droplet.

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Ubuntu 14.04 — tmux — vulnerability — patch and remediation guide — diagnosis and fix on Ubuntu 14.04

Ubuntu 14.04 — tmux — vulnerability — patch and remediation guide

🟢 Low   ⏱ 5–15 min  Last verified: 28 May 2022 Affected versions: Ubuntu 14.04 (trusty) 📖 ~4 min read  •  Source: Ubuntu Security Notice USN-5843-1 Related CVEs: CVE-2022-47016 Upstream summary: It was discovered that tmux incorrectly handled certain inputs. An attacker could possibly use this issue to cause a denial of service. Table of […]

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Ubuntu 20.04 — gzip — vulnerability — patch and remediation guide — diagnosis and fix on Ubuntu 20.04

Ubuntu 20.04 — gzip — vulnerability — patch and remediation guide

🟢 Low   ⏱ 5–15 min  Last verified: 27 May 2022 Affected versions: Ubuntu 20.04 (focal) 📖 ~4 min read  •  Source: Ubuntu Security Notice USN-5378-1 Related CVEs: CVE-2022-1271 Upstream summary: Cleemy Desu Wayo discovered that Gzip incorrectly handled certain filenames. If a user or automated system were tricked into performing zgrep operations with specially […]

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How to Install WordPress with LEMP on Ubuntu 22.04 — step-by-step Linux tutorial on Progressive Robot

How to Install WordPress with LEMP on Ubuntu 22.04

WordPress, one of the most popular content management systems (CMS) on the internet, allows users to set up flexible blogs and websites using a MySQL backend with PHP processing. WordPress is a great choice for getting a website up and running efficiently. After an initial setup, almost all administration for WordPress websites can be done through its graphical interface.

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

Ubuntu 16.04 — plantuml — vulnerability — patch and remediation guide

🟢 Low   ⏱ 5–15 min  Last verified: 26 May 2022 Affected versions: Ubuntu 16.04 (xenial) 📖 ~4 min read  •  Source: Ubuntu Security Notice USN-7353-1 Related CVEs: CVE-2022-1231 Upstream summary: Tobias S. Fink discovered that PlantUML was susceptible to cross-site scripting attacks (XSS) in instances where SVG images were rendered. An attacker could possibly […]

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Ubuntu 22.04 — multipath-tools — multiple vulnerabilities (2 CVEs) — patch and remediation guide — diagnosis and fix on Ubuntu 22.04

Ubuntu 22.04 — multipath-tools — multiple vulnerabilities (2 CVEs) — patch and remediation guide

🟢 Low   ⏱ 5–15 min  Last verified: 25 May 2022 Affected versions: Ubuntu 22.04 (jammy) 📖 ~4 min read  •  Source: Ubuntu Security Notice USN-5731-1 Related CVEs: CVE-2022-41973 CVE-2022-41974 Upstream summary: It was discovered that multipath-tools incorrectly handled symlinks. A local attacker could possibly use this issue, in combination with other issues, to escalate […]

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How To Install and Configure Nextcloud on Ubuntu 22.04 — step-by-step Linux tutorial on Progressive Robot

How To Install and Configure Nextcloud on Ubuntu 22.04

Nextcloud, a fork of ownCloud, is a file sharing server that permits you to store your personal content, like documents and pictures, in a centralized location, much like Dropbox. In this tutorial, we will install and configure a Nextcloud instance on an Ubuntu 22.04 server.

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