Linux

How to Set Up PostgreSQL Streaming Replication on Debian 9 — step-by-step Debian 9 tutorial on Progressive Robot

How to Set Up PostgreSQL Streaming Replication on Debian 9

Introduction This guide explains how to Set Up PostgreSQL Streaming Replication on Debian 9 on Debian 9 Stretch. Debian Stretch uses systemd for service management, nftables as the underlying packet filter (with ufw or iptables front-ends still available), and AppArmor for mandatory access control. Every command is designed for a minimal Debian 9 install with […]

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openSUSE Tumbleweed — enscript — vulnerability — patch and remediation guide — diagnosis and fix on openSUSE Tumbleweed

openSUSE Tumbleweed — enscript — vulnerability — patch and remediation guide

🟡 Medium   ⏱ 10–30 min  Last verified: 25 May 2026 Affected versions: openSUSE Tumbleweed 📖 ~4 min read  •  Source: SUSE advisory SUSE-SR:2008:024 (see also SUSE bugzilla) Related CVEs: CVE-2008-3863 Upstream summary: Stack-based buffer overflow in the read_special_escape function in src/psgen.c in GNU Enscript 1.6.1 and 1.6.4 beta, when the -e (aka special escapes […]

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Como configurar um Firewall com o UFW no Debian 9 — step-by-step Linux tutorial on Progressive Robot

Como configurar um Firewall com o UFW no Debian 9

O UFW, ou Uncomplicated Firewall (Firewall Descomplicado), é uma interface para iptables desenvolvida para simplificar o processo de configuração de um firewall. Apesar da iptables ser uma ferramenta sólida e flexível, pode ser difícil para os iniciantes aprender como usá-la…

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Arch Linux — lib32-jansson — vulnerability — patch and remediation guide — diagnosis and fix on Arch Linux

Arch Linux — lib32-jansson — vulnerability — patch and remediation guide

🟡 Medium   ⏱ 10–30 min  Last verified: 25 May 2026 Affected versions: Arch Linux (rolling release) 📖 ~4 min read  •  Source: Arch ASA ASA-201609-17 Related CVEs: CVE-2016-4425 Upstream summary: Type: denial of service. Status: Fixed. Affected: 2.7-2. Fixed in: 2.8-1. Group: AVG-12. Table of contents Symptom & Impact Environment & Reproduction Root Cause […]

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Ubuntu 18.04 — libonig — multiple vulnerabilities (5 CVEs) — patch and remediation guide — diagnosis and fix on Ubuntu 18.04

Ubuntu 18.04 — libonig — multiple vulnerabilities (5 CVEs) — patch and remediation guide

🟡 Medium   ⏱ 10–30 min  Last verified: 7 August 2019 Affected versions: Ubuntu 18.04 (bionic) 📖 ~4 min read  •  Source: Ubuntu Security Notice USN-5662-1 Related CVEs: CVE-2019-16163 CVE-2019-19012 CVE-2019-19203 CVE-2019-19204 CVE-2019-19246 Upstream summary: It was discovered that Oniguruma incorrectly handled certain regular expressions. An attacker could possibly use this issue to cause a […]

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SLES 12 — libzmq3 — multiple vulnerabilities (6 CVEs) — patch and remediation guide — diagnosis and fix on SLES 12

SLES 12 — libzmq3 — multiple vulnerabilities (6 CVEs) — patch and remediation guide

🟠 High   ⏱ 15–60 min  Last verified: 7 August 2019 Affected versions: SLES 12 📖 ~4 min read  •  Source: SUSE advisory SUSE-FU-2022:0444-1 (see also SUSE bugzilla) Related CVEs: CVE-2019-13132 CVE-2016-9566 CVE-2019-3698 CVE-2014-7202 CVE-2014-7203 CVE-2014-9721 Upstream summary: In ZeroMQ libzmq before 4.0.9, 4.1.x before 4.1.7, and 4.2.x before 4.3.2, a remote, unauthenticated client connecting […]

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Common Problems 118958

Ubuntu 14.04 Drops to initramfs BusyBox on Boot

🟡 Medium   ⏱ 5–30 min  Last verified: 6 August 2019 📖 ~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 118529

Ubuntu 16.04 LTS Sudo Fails in Non-Interactive Automation

🟡 Medium   ⏱ 5–30 min  Last verified: 6 August 2019 Affected versions: 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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How to Install and Configure Nomad on Debian 9 — step-by-step Debian 9 tutorial on Progressive Robot

How to Install and Configure Nomad on Debian 9

Introduction This guide explains how to Install and Configure Nomad on Debian 9 on Debian 9 Stretch. Debian Stretch uses systemd for service management, nftables as the underlying packet filter (with ufw or iptables front-ends still available), and AppArmor for mandatory access control. Every command is designed for a minimal Debian 9 install with the […]

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