Linux

How to Set Up SFTP Server with Chroot Jail on Debian 10 — step-by-step Debian 10 tutorial on Progressive Robot

How to Set Up SFTP Server with Chroot Jail on Debian 10

Introduction Debian 10 Buster is built around the ethos of stability and free software. Setting up set up sftp server with chroot jail on debian 10 on Buster leverages the same proven Debian packaging system that powers millions of servers worldwide, while benefiting from the latest upstream releases included in the Buster freeze. Follow each […]

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Debian 9 — nginx — multiple vulnerabilities (3 CVEs) — patch and remediation guide — diagnosis and fix on Debian 9

Debian 9 — nginx — multiple vulnerabilities (3 CVEs) — patch and remediation guide

🟡 Medium   ⏱ 10–30 min  Last verified: 20 February 2020 Affected versions: Debian 9 (stretch) 📖 ~4 min read  •  Source: Debian Security Tracker Related CVEs: CVE-2017-7529 CVE-2018-16843 CVE-2019-9511 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 9 — pdns — multiple vulnerabilities (2 CVEs) — patch and remediation guide — diagnosis and fix on Debian 9

Debian 9 — pdns — multiple vulnerabilities (2 CVEs) — patch and remediation guide

🟢 Low   ⏱ 5–15 min  Last verified: 20 February 2020 Affected versions: Debian 9 (stretch) 📖 ~4 min read  •  Source: Debian Security Tracker Related CVEs: CVE-2019-10162 CVE-2019-3871 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 121124

Debian 10: UFW blocks required application ports

🟡 Medium   ⏱ 5–30 min  Last verified: 19 February 2020 Affected versions: Debian 10 📖 ~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 Enable Brotli Compression on Nginx on Debian 10 — step-by-step Debian 10 tutorial on Progressive Robot

How to Enable Brotli Compression on Nginx on Debian 10

Introduction How to Enable Brotli Compression on Nginx on Debian 10 is a fundamental operation for any administrator maintaining a Debian 10 Buster server. Debian 10 Buster ships with the Linux 6.12 kernel, updated toolchains, and a fully refreshed package archive — meaning version numbers, configuration file paths, and some dependency chains differ from Debian […]

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openSUSE Tumbleweed — openmpt123 — multiple vulnerabilities (8 CVEs) — patch and remediation guide — diagnosis and fix on openSUSE Tumbleweed

openSUSE Tumbleweed — openmpt123 — multiple vulnerabilities (8 CVEs) — patch and remediation guide

🟡 Medium   ⏱ 10–30 min  Last verified: 25 May 2026 Affected versions: openSUSE Tumbleweed 📖 ~4 min read  •  Source: SUSE security advisory (see also SUSE bugzilla) Related CVEs: CVE-2017-11311 CVE-2018-10017 CVE-2018-11710 CVE-2018-20860 CVE-2018-20861 CVE-2019-14382 CVE-2019-14383 CVE-2019-17113 Upstream summary: soundlib/Load_psm.cpp in OpenMPT through 1.26.12.00 and libopenmpt before 0.2.8461-beta26 has a heap buffer overflow with […]

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Common Problems 118507

Ubuntu 16.04 LTS Apache2 fails to start because port 80 is in use

🟡 Medium   ⏱ 5–30 min  Last verified: 19 February 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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How to Install and Configure Drone CI on RHEL 7 — step-by-step RHEL 7 tutorial on Progressive Robot

How to Install and Configure Drone CI on RHEL 7

How to Install and Configure Drone CI on RHEL 7 Drone CI is a lightweight, container-native continuous integration platform built around the concept of pipelines-as-code. Unlike Jenkins, which requires significant plugin management and XML configuration, Drone uses a simple YAML file (.drone.yml) stored in your repository to define every aspect of a pipeline. Drone’s server […]

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Gentoo Linux — media-libs/libvorbis — multiple vulnerabilities (3 CVEs) — patch and remediation guide — diagnosis and fix on Gentoo Linux

Gentoo Linux — media-libs/libvorbis — multiple vulnerabilities (3 CVEs) — patch and remediation guide

🟡 Medium   ⏱ 10–30 min  Last verified: 25 May 2026 Affected versions: Gentoo Linux 📖 ~4 min read  •  Source: Gentoo GLSA GLSA-202003-36 Related CVEs: CVE-2017-14160 CVE-2018-10392 CVE-2018-10393 Upstream summary: Multiple vulnerabilities have been discovered in libvorbis. Please review the CVE identifiers referenced below for details. Table of contents Symptom & Impact Environment & […]

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

Ubuntu 16.04 — byobu — vulnerability — patch and remediation guide

🟢 Low   ⏱ 5–15 min  Last verified: 19 February 2020 Affected versions: Ubuntu 16.04 (xenial) 📖 ~4 min read  •  Source: Ubuntu Security Notice USN-5234-1 Related CVEs: CVE-2019-7306 Upstream summary: Sander Bos discovered that Byobu incorrectly handled certain Apport data. An attacker could possibly use this issue to expose sensitive information. Table of contents […]

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