Ubuntu 16.04

Ubuntu 16.04 — bzip2 — multiple vulnerabilities (3 CVEs) — patch and remediation guide — diagnosis and fix on Ubuntu 16.04

Ubuntu 16.04 — bzip2 — multiple vulnerabilities (3 CVEs) — patch and remediation guide

🟡 Medium   ⏱ 10–30 min  Last verified: 11 April 2020 Affected versions: Ubuntu 16.04 (xenial) 📖 ~4 min read  •  Source: Ubuntu Security Notice USN-4038-3 Related CVEs: https://launchpad.net/bugs/1834494 CVE-2016-3189 CVE-2019-12900 Upstream summary: USN-4038-1 fixed a vulnerability in bzip2. The update introduced a regression causing bzip2 to incorrect raises CRC errors for some files. We […]

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

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

🟡 Medium   ⏱ 10–30 min  Last verified: 11 April 2020 Affected versions: Ubuntu 16.04 (xenial) 📖 ~4 min read  •  Source: Ubuntu Security Notice USN-5259-3 Related CVEs: https://ubuntu.com/security/notices/USN-5259-2 https://launchpad.net/bugs/1971895 CVE-2017-9525 CVE-2019-9704 CVE-2019-9705 CVE-2019-9706 Upstream summary: USN-5259-1 and USN-5259-2 fixed vulnerabilities in Cron. Unfortunately that update was incomplete and could introduce a regression. This update […]

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¿Cómo configurar Virtual Hosts de Apache en Ubuntu 16.04? — step-by-step Linux tutorial on Progressive Robot

¿Cómo configurar Virtual Hosts de Apache en Ubuntu 16.04?

Apache es el servidor web más popular para servir contenido en Internet. Cuenta con más de la mitad de los sitios activos en Internet y es extremadamente poderoso y flexible. Apache rompe su funcionalidad y componentes en unidades separadas que pueden ser personalizadas y…

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

Ubuntu 16.04 — walinuxagent — vulnerability — patch and remediation guide

🟢 Low   ⏱ 5–15 min  Last verified: 10 April 2020 Affected versions: Ubuntu 16.04 (xenial) 📖 ~4 min read  •  Source: Ubuntu Security Notice USN-3907-1 Related CVEs: CVE-2019-0804 Upstream summary: It was discovered that WALinuxAgent created swap files with incorrect permissions. A local attacker could possibly use this issue to obtain sensitive information from […]

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How to Use Full-Text Search in PostgreSQL on Ubuntu 16.04 — step-by-step Linux tutorial on Progressive Robot

How to Use Full-Text Search in PostgreSQL on Ubuntu 16.04

In this tutorial, we’ll use PostgreSQL to store data containing articles for a hypothetical news website, then learn how to query the database using FTS and select only the best matches. As the final step, we will explore the available types of indexes in PostgreSQL which can be used to significantly improve performance of the full-text search queries.

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Common Problems 118490

Ubuntu 16.04 system clock keeps incorrect time

🟡 Medium   ⏱ 5–30 min  Last verified: 6 April 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 118473

Ubuntu 16.04 LTS – ext4 filesystem remounts read-only under load – Fix & Prevention

🟠 High   ⏱ 5–30 min  Last verified: 6 April 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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Common Problems 118514

Ubuntu 16.04 LTS failed unattended-upgrades lock prevents manual patching

🟡 Medium   ⏱ 5–30 min  Last verified: 4 April 2020 Affected versions: 16.04 📖 ~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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