Linux

Alpine Linux edge — hylafaxplus — multiple vulnerabilities (2 CVEs) — patch and remediation guide — diagnosis and fix on Alpine Linux edge

Alpine Linux edge — hylafaxplus — multiple vulnerabilities (2 CVEs) — patch and remediation guide

🟡 Medium   ⏱ 10–30 min  Last verified: 25 May 2026 Affected versions: Alpine Linux edge / fixed in 7.0.2-r2 📖 ~4 min read  •  Source: Alpine secdb entry — hylafaxplus 7.0.2-r2 Related CVEs: CVE-2020-15396 CVE-2020-15397 Upstream summary: Alpine community repository for vedge ships hylafaxplus 7.0.2-r2 which addresses CVE-2020-15396. Table of contents Symptom & Impact […]

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Ubuntu 18.04 — ruby-gon — vulnerability — patch and remediation guide — diagnosis and fix on Ubuntu 18.04

Ubuntu 18.04 — ruby-gon — vulnerability — patch and remediation guide

🟢 Low   ⏱ 5–15 min  Last verified: 21 November 2020 Affected versions: Ubuntu 18.04 (bionic) 📖 ~4 min read  •  Source: Ubuntu Security Notice USN-4560-1 Related CVEs: CVE-2020-25739 Upstream summary: It was discovered that Gon gem did not properly escape certain input. An attacker could use this vulnerability to execute a cross-site scripting (XSS) […]

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Oracle Linux 8 — squid:4 security, bug fix, and — enhancement update — new behaviour and fixes — diagnosis and fix on Oracle Linux 8

Oracle Linux 8 — squid:4 security, bug fix, and — enhancement update — new behaviour and fixes (ELSA-2020-4743)

🟡 Medium   ⏱ 10–30 min  Last verified: 21 November 2020 Affected versions: Oracle Linux 8 📖 ~4 min read  •  Source: ELSA advisory ELSA-2020-4743 Related CVEs: CVE-2019-18676 CVE-2019-18679 CVE-2019-12526 CVE-2019-12854 CVE-2019-12523 CVE-2019-18677 Table of contents Symptom & Impact Environment & Reproduction Root Cause Analysis Quick Triage Step-by-Step Diagnosis Solution – Primary Fix Solution – […]

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Common Problems 119029

Ubuntu 14.04 LTS – apt update returns 404 from archive mirrors

🟠 High   ⏱ 5–30 min  Last verified: 21 November 2020 Affected versions: Ubuntu 14.04 LTS Ubuntu 14.04 Ubuntu 14.04.6 📖 ~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 118978

Ubuntu 14.04 LTS SSH Public Key Login Suddenly Fails

🟡 Medium   ⏱ 5–30 min  Last verified: 21 November 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 117631

Ubuntu 20.04 LTS Recurring ext4 Journal Errors on Reboot

🟠 High   ⏱ 5–30 min  Last verified: 21 November 2020 Affected versions: 20.04 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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How To Sync Transformed Data from MongoDB to Elasticsearch with Transporter on Ubuntu 14.04 — step-by-step Linux tutorial on Progressive Robot

How To Sync Transformed Data from MongoDB to Elasticsearch with Transporter on Ubuntu 14.04

Many times, you might need to migrate data from MongoDB to Elasticsearch in bulk. Writing your own program for this task can be tedious. There is a wonderful open source utility called Transporter, developed by [Compose](https://www.compose.io/) (a cloud platform for databases), that takes care of this task very efficiently. This tutorial shows you how to use the open-source utility Transporter to copy data from MongoDB to Elasticsearch with custom transformations.

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Установка Ruby on Rails с помощью rbenv в Ubuntu 18.04 — step-by-step Linux tutorial on Progressive Robot

Установка Ruby on Rails с помощью rbenv в Ubuntu 18.04

Ruby on Rails — один из самых популярных среди разработчиков наборов приложений для создания сайтов и веб-приложений. Язык программирования Ruby в сочетании с системой разработки Rails делает разработку приложений очень простой. Вы можете легко…

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