Linux

Ubuntu 20.04 — mqtt-client — vulnerability — patch and remediation guide — diagnosis and fix on Ubuntu 20.04

Ubuntu 20.04 — mqtt-client — vulnerability — patch and remediation guide

🟢 Low   ⏱ 5–15 min  Last verified: 19 September 2020 Affected versions: Ubuntu 20.04 (focal) 📖 ~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 — libass — multiple vulnerabilities (4 CVEs) — patch and remediation guide — diagnosis and fix on Ubuntu 16.04

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

🟡 Medium   ⏱ 10–30 min  Last verified: 19 September 2020 Affected versions: Ubuntu 16.04 (xenial) 📖 ~4 min read  •  Source: Ubuntu Security Notice USN-4797-1 Related CVEs: CVE-2016-7969 CVE-2016-7970 CVE-2016-7972 CVE-2020-24994 Upstream summary: It was discovered that LibASS incorrectly handled certain ASS files. A remote attacker could possibly use this issue to cause a […]

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Oracle Linux 8 — perl-XML-Parser — vulnerability — patch and remediation guide — diagnosis and fix on Oracle Linux 8

Oracle Linux 8 — perl-XML-Parser — vulnerability — patch and remediation guide (ELSA-2026-7681)

🟠 High   ⏱ 15–60 min  Last verified: 19 September 2020 Affected versions: Oracle Linux 8 📖 ~4 min read  •  Source: ELSA advisory ELSA-2026-7681 Related CVEs: CVE-2006-10002 CVE-2006-10003 Table of contents Symptom & Impact Environment & Reproduction Root Cause Analysis Quick Triage Step-by-Step Diagnosis Solution – Primary Fix Solution – Alternative Approaches Verification & […]

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How To Install Vesta Control Panel on Ubuntu 12.04 LTS — step-by-step Linux tutorial on Progressive Robot

How To Install Vesta Control Panel on Ubuntu 12.04 LTS

Vesta is an easy to use open source web hosting control panel that currently supports Ubuntu Linux (12.04 LTS, 13.04 and 13.10), Debian 7, CentOS (5 and 6), and RHEL (5 and 6). It packs a bunch of features by default to allow you to host and manage your websites with ease on your droplet.

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Oracle Linux 8 — squid:4 — vulnerability — patch and remediation guide — diagnosis and fix on Oracle Linux 8

Oracle Linux 8 — squid:4 — vulnerability — patch and remediation guide (ELSA-2020-3623)

🟠 High   ⏱ 15–60 min  Last verified: 19 September 2020 Affected versions: Oracle Linux 8 📖 ~4 min read  •  Source: ELSA advisory ELSA-2020-3623 Related CVEs: CVE-2020-15811 CVE-2020-15810 Table of contents Symptom & Impact Environment & Reproduction Root Cause Analysis Quick Triage Step-by-Step Diagnosis Solution – Primary Fix Solution – Alternative Approaches Verification & […]

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Debian 10 — webkit2gtk — multiple vulnerabilities (20 CVEs) — patch and remediation guide — diagnosis and fix on Debian 10

Debian 10 — webkit2gtk — multiple vulnerabilities (20 CVEs) — patch and remediation guide

🟠 High   ⏱ 15–60 min  Last verified: 19 September 2020 Affected versions: Debian 10 (buster) 📖 ~4 min read  •  Source: Debian Security Tracker Related CVEs: CVE-2019-8625 CVE-2019-8644 CVE-2019-8812 CVE-2019-8835 CVE-2020-10018 CVE-2020-11793 CVE-2020-9947 CVE-2020-13558  +12 more Table of contents Symptom & Impact Environment & Reproduction Root Cause Analysis Quick Triage Step-by-Step Diagnosis Solution – […]

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Como Instalar e Utilizar o PostgreSQL no Ubuntu 16.04 — step-by-step Linux tutorial on Progressive Robot

Como Instalar e Utilizar o PostgreSQL no Ubuntu 16.04

Sistemas gerenciadores de banco de dados são um componente chave em muitos sites web e aplicações. Eles fornecem uma forma estruturada de armazenar, organizar, e acessar informações. PostgreSQL, ou Postgres, é um sistema gerenciador de banco de dados relacional que…

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Alpine Linux edge — ngircd — vulnerability — patch and remediation guide — diagnosis and fix on Alpine Linux edge

Alpine Linux edge — ngircd — vulnerability — patch and remediation guide

🟡 Medium   ⏱ 10–30 min  Last verified: 25 May 2026 Affected versions: Alpine Linux edge / fixed in 25-r1 📖 ~4 min read  •  Source: Alpine secdb entry — ngircd 25-r1 Related CVEs: CVE-2020-14148 Upstream summary: Alpine main repository for vedge ships ngircd 25-r1 which addresses CVE-2020-14148. Table of contents Symptom & Impact Environment […]

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Oracle Linux 8 — git-lfs — security and stability fixes — required update — diagnosis and fix on Oracle Linux 8

Oracle Linux 8 — git-lfs — security and stability fixes — required update (ELSA-2023-2866)

🟡 Medium   ⏱ 10–30 min  Last verified: 18 September 2020 Affected versions: Oracle Linux 8 📖 ~4 min read  •  Source: ELSA advisory ELSA-2023-2866 Related CVEs: CVE-2022-2880 CVE-2022-41717 CVE-2022-41715 Table of contents Symptom & Impact Environment & Reproduction Root Cause Analysis Quick Triage Step-by-Step Diagnosis Solution – Primary Fix Solution – Alternative Approaches Verification […]

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Common Problems 119061

Ubuntu 14.04 LTS sudo fails due to unresolved hostname

🟢 Low   ⏱ 5–30 min  Last verified: 18 September 2020 Affected versions: 14.04 📖 ~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 […]

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