Linux

How to Configure GPG Key Management on Debian 11 — step-by-step Debian 11 tutorial on Progressive Robot

How to Configure GPG Key Management on Debian 11

Introduction This guide explains how to Configure GPG Key Management on Debian 11 on Debian 11 Bullseye. Debian Bullseye 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 11 install with the […]

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Debian 11 — cups-pk-helper — vulnerability — patch and remediation guide — diagnosis and fix on Debian 11

Debian 11 — cups-pk-helper — vulnerability — patch and remediation guide

🟢 Low   ⏱ 5–15 min  Last verified: 29 May 2022 Affected versions: Debian 11 (bullseye) 📖 ~4 min read  •  Source: Debian Security Tracker Related CVEs: CVE-2012-4510 Upstream summary: cups-pk-helper before 0.2.3 does not properly wrap the (1) cupsGetFile and (2) cupsPutFile function calls, which allows user-assisted remote attackers to read or overwrite sensitive […]

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Ubuntu 20.04 — node-json5 — vulnerability — patch and remediation guide — diagnosis and fix on Ubuntu 20.04

Ubuntu 20.04 — node-json5 — vulnerability — patch and remediation guide

🟢 Low   ⏱ 5–15 min  Last verified: 29 May 2022 Affected versions: Ubuntu 20.04 (focal) 📖 ~4 min read  •  Source: Ubuntu Security Notice USN-6758-1 Related CVEs: CVE-2022-46175 Upstream summary: It was discovered that the JSON5 parse method incorrectly handled the parsing of keys named \_\_proto\_\_. An attacker could possibly use this issue to […]

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Oracle Linux 8 — xmlrpc-c — vulnerability — patch and remediation guide — diagnosis and fix on Oracle Linux 8

Oracle Linux 8 — xmlrpc-c — vulnerability — patch and remediation guide (ELSA-2022-7692)

🟡 Medium   ⏱ 10–30 min  Last verified: 29 May 2022 Affected versions: Oracle Linux 8 📖 ~4 min read  •  Source: ELSA advisory ELSA-2022-7692 Related CVEs: CVE-2021-46143 CVE-2022-22822 CVE-2022-22824 CVE-2022-22823 CVE-2022-22826 CVE-2022-22827 Table of contents Symptom & Impact Environment & Reproduction Root Cause Analysis Quick Triage Step-by-Step Diagnosis Solution – Primary Fix Solution – […]

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Arch Linux — dovecot — multiple vulnerabilities (19 CVEs) — patch and remediation guide — diagnosis and fix on Arch Linux

Arch Linux — dovecot — multiple vulnerabilities (19 CVEs) — patch and remediation guide

🔴 Critical   ⏱ 15–90 min  Last verified: 25 May 2026 Affected versions: Arch Linux (rolling release) 📖 ~4 min read  •  Source: Arch ASA ASA-201908-18 Related CVEs: CVE-2019-11500 CVE-2021-33515 CVE-2021-29157 CVE-2020-25275 CVE-2020-24386 CVE-2020-10967 CVE-2020-10958 CVE-2020-10957  +11 more Upstream summary: Type: arbitrary code execution. Status: Fixed. Affected: 2.3.7.1-1. Fixed in: 2.3.7.2-1. Group: AVG-1026. Table of […]

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Oracle Linux 8 — wpa_supplicant — vulnerability — patch and remediation guide — diagnosis and fix on Oracle Linux 8

Oracle Linux 8 — wpa_supplicant — vulnerability — patch and remediation guide (ELSA-2021-0809)

🟠 High   ⏱ 15–60 min  Last verified: 29 May 2022 Affected versions: Oracle Linux 8 📖 ~4 min read  •  Source: ELSA advisory ELSA-2021-0809 Related CVEs: CVE-2021-27803 Table of contents Symptom & Impact Environment & Reproduction Root Cause Analysis Quick Triage Step-by-Step Diagnosis Solution – Primary Fix Solution – Alternative Approaches Verification & Acceptance […]

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How To Use BackupPC to Create a Backup Server on an Ubuntu 12.04 VPS — step-by-step Linux tutorial on Progressive Robot

How To Use BackupPC to Create a Backup Server on an Ubuntu 12.04 VPS

BackupPC is a mature backup program that can be configured to back up Linux and Windows machines. Because of its powerful and flexible configuration options, and its easy to use web-interface, this is a good solution for many users. This guide will cover how to install and configure BackupPC on an Ubuntu 12.04 droplet.

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Como instalar o Node.js no Debian 9 — step-by-step Linux tutorial on Progressive Robot

Como instalar o Node.js no Debian 9

O Node.js é uma plataforma JavaScript para programação de fins gerais que permite que os usuários construam aplicativos de rede rapidamente. Ao potencializar o JavaScript em ambos front e backend, o Node.js torna o desenvolvimento mais consistente e…

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AlmaLinux 8 — dracut — vulnerability — patch and remediation guide — diagnosis and fix on AlmaLinux 8

AlmaLinux 8 — dracut — vulnerability — patch and remediation guide

🟡 Medium   ⏱ 10–30 min  Last verified: 25 May 2026 Affected versions: AlmaLinux 8 📖 ~4 min read  •  Source: AlmaLinux ALSA ALBA-2022:2105 Upstream summary: For detailed information on changes in this release, see the AlmaLinux Release Notes linked from the References section. Table of contents Symptom & Impact Environment & Reproduction Root Cause […]

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Debian 11 — nbd — multiple vulnerabilities (8 CVEs) — patch and remediation guide — diagnosis and fix on Debian 11

Debian 11 — nbd — multiple vulnerabilities (8 CVEs) — patch and remediation guide

🟡 Medium   ⏱ 10–30 min  Last verified: 28 May 2022 Affected versions: Debian 11 (bullseye) 📖 ~4 min read  •  Source: Debian Security Tracker Related CVEs: CVE-2005-3534 CVE-2011-0530 CVE-2011-1925 CVE-2013-6410 CVE-2013-7441 CVE-2015-0847 CVE-2022-26495 CVE-2022-26496 Upstream summary: Buffer overflow in the Network Block Device (nbd) server 2.7.5 and earlier, and 2.8.0 through 2.8.2, allows remote […]

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