ubuntu

How To Install Salt on Ubuntu 12.04 — step-by-step Linux tutorial on Progressive Robot

How To Install Salt on Ubuntu 12.04

In this tutorial, you will install a Salt Master and a Salt Minion on a cloud servers running Ubuntu 12.04. You will also begin to explore how Salt works by executing a few simple commands.

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Ubuntu 20.04 — gthumb — multiple vulnerabilities (2 CVEs) — patch and remediation guide — diagnosis and fix on Ubuntu 20.04

Ubuntu 20.04 — gthumb — multiple vulnerabilities (2 CVEs) — patch and remediation guide

🟢 Low   ⏱ 5–15 min  Last verified: 22 March 2021 Affected versions: Ubuntu 20.04 (focal) 📖 ~4 min read  •  Source: Ubuntu Security Notice USN-5680-1 Related CVEs: CVE-2019-20326 CVE-2020-36427 Upstream summary: It was discovered that gThumb did not properly managed memory when processing certain image files. If a user were tricked into opening a […]

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

Ubuntu 16.04 — pulseaudio — multiple vulnerabilities (4 CVEs) — patch and remediation guide

🟡 Medium   ⏱ 10–30 min  Last verified: 22 March 2021 Affected versions: Ubuntu 16.04 (xenial) 📖 ~4 min read  •  Source: Ubuntu Security Notice USN-4640-1 Related CVEs: CVE-2020-16123 CVE-2020-15710 CVE-2020-11931 https://launchpad.net/bugs/1877102 Upstream summary: James Henstridge discovered that an Ubuntu-specific patch caused PulseAudio to incorrectly handle snap client connections. An attacker could possibly use this […]

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Como instalar o MySQL no Ubuntu 20.04 — step-by-step Linux tutorial on Progressive Robot

Como instalar o MySQL no Ubuntu 20.04

Uma versão anterior deste tutorial foi escrita por Hazel Virdó O MySQL é um sistema de gerenciamento de banco de dados de código aberto, que é geralmente instalado como parte da pilha popular…

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Ubuntu 14.04 — fail2ban — vulnerability — patch and remediation guide — diagnosis and fix on Ubuntu 14.04

Ubuntu 14.04 — fail2ban — vulnerability — patch and remediation guide

🟢 Low   ⏱ 5–15 min  Last verified: 22 March 2021 Affected versions: Ubuntu 14.04 (trusty) 📖 ~4 min read  •  Source: Ubuntu Security Notice USN-5232-1 Related CVEs: CVE-2021-32749 Upstream summary: Jakub Żoczek discovered that certain Fail2ban actions handled whois responses in an insecure way. If Fail2ban was configured to use certain mail actions like […]

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Common Problems 118526

Ubuntu 16.04 LTS – swap not enabled after reboot

🟡 Medium   ⏱ 5–30 min  Last verified: 21 March 2021 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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How To Set Up a Serf Cluster on Several Ubuntu VPS — step-by-step Linux tutorial on Progressive Robot

How To Set Up a Serf Cluster on Several Ubuntu VPS

Serf is a decentralized service orchestration and service discovery tool. It is extremely fault tolerant and decentralized, with no single point of failure like other similar tools. Serf can be used to trigger any event across a cluster of systems as well as perform monitoring duties. It’s built on top of the Gossip protocol which is designed for decentralized communication.

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Ubuntu 18.04 — pygments — multiple vulnerabilities (2 CVEs) — patch and remediation guide — diagnosis and fix on Ubuntu 18.04

Ubuntu 18.04 — pygments — multiple vulnerabilities (2 CVEs) — patch and remediation guide

🟢 Low   ⏱ 5–15 min  Last verified: 20 March 2021 Affected versions: Ubuntu 18.04 (bionic) 📖 ~4 min read  •  Source: Ubuntu Security Notice USN-4897-1 Related CVEs: CVE-2021-27291 CVE-2021-20270 Upstream summary: Ben Caller discovered that Pygments incorrectly handled parsing certain files. If a user or automated system were tricked into parsing a specially crafted […]

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