Package Management

Ubuntu 16.04 — ldns — multiple vulnerabilities (5 CVEs) — patch and remediation guide — diagnosis and fix on Ubuntu 16.04

Ubuntu 16.04 — ldns — multiple vulnerabilities (5 CVEs) — patch and remediation guide

🟡 Medium   ⏱ 10–30 min  Last verified: 6 September 2020 Affected versions: Ubuntu 16.04 (xenial) 📖 ~4 min read  •  Source: Ubuntu Security Notice USN-5257-1 Related CVEs: CVE-2020-19860 CVE-2020-19861 CVE-2014-3209 CVE-2017-1000231 CVE-2017-1000232 Upstream summary: It was discovered that ldns incorrectly handled certain inputs. An attacker could possibly use this issue to expose sensitive information. […]

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How to Set Up Cron Jobs and Scheduled Tasks on Debian 9 — step-by-step Debian 9 tutorial on Progressive Robot

How to Set Up Cron Jobs and Scheduled Tasks on Debian 9

Introduction This guide explains how to Set Up Cron Jobs and Scheduled Tasks 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 […]

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

Oracle Linux 8 — libtiff — vulnerability — patch and remediation guide (ELSA-2020-1688)

🟡 Medium   ⏱ 10–30 min  Last verified: 6 September 2020 Affected versions: Oracle Linux 8 📖 ~4 min read  •  Source: ELSA advisory ELSA-2020-1688 Related CVEs: CVE-2019-14973 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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Gentoo Linux — net-libs/glib-networking — vulnerability — patch and remediation guide — diagnosis and fix on Gentoo Linux

Gentoo Linux — net-libs/glib-networking — vulnerability — patch and remediation guide

🟡 Medium   ⏱ 10–30 min  Last verified: 25 May 2026 Affected versions: Gentoo Linux 📖 ~4 min read  •  Source: Gentoo GLSA GLSA-202007-50 Related CVEs: CVE-2020-13645 Upstream summary: GTlsClientConnection skips hostname verification of the server’s TLS certificate if the application fails to specify the expected server identity. Table of contents Symptom & Impact Environment […]

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How to Set Up Bash Aliases and Environment Variables on Debian 10 — step-by-step Debian 10 tutorial on Progressive Robot

How to Set Up Bash Aliases and Environment Variables on Debian 10

Introduction How to Set Up Bash Aliases and Environment Variables 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 […]

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FreeBSD 12 — typo3-10-php — multiple vulnerabilities (9 CVEs) — patch and remediation guide — diagnosis and fix on FreeBSD 12

FreeBSD 12 — typo3-10-php — multiple vulnerabilities (9 CVEs) — patch and remediation guide

🟡 Medium   ⏱ 10–30 min  Last verified: 5 September 2020 Affected versions: FreeBSD 12 📖 ~4 min read  •  Source: FreeBSD VuXML VuXML topic: typo3 — XSS vulnerability in svg-sanitize Related CVEs: CVE-2020-11063 CVE-2020-11064 CVE-2020-11065 CVE-2020-11066 CVE-2020-11067 CVE-2020-11069 CVE-2020-15098 CVE-2020-15099  +1 more Upstream summary: The TYPO3 project reports: The SVG sanitizer library enshrined/svg-sanitize before […]

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How to Set Up IPv6 on Debian 9 — step-by-step Debian 9 tutorial on Progressive Robot

How to Set Up IPv6 on Debian 9

Introduction This guide explains how to Set Up IPv6 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 standard […]

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How to Use proctools on IBM AIX 7.2 — step-by-step IBM AIX 7.2 tutorial on Progressive Robot

How to Use proctools on IBM AIX 7.2

Introduction IBM AIX 7.2 is the latest release of IBM’s enterprise-grade UNIX operating system, running on IBM Power Systems hardware. Known for its reliability, security, and performance in mission-critical environments, AIX 7.2 introduces enhanced virtualization, security hardening, and cloud integration features. This guide covers how to use proctools on ibm aix 7.2 on IBM AIX […]

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How to Install Checkmk on Debian 10 — step-by-step Debian 10 tutorial on Progressive Robot

How to Install Checkmk on Debian 10

Introduction This guide explains how to Install Checkmk on Debian 10 on Debian 10 Buster. Debian Buster 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 10 install with the standard repositories […]

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Oracle Linux 8 — .NET Core — vulnerability — patch and remediation guide — diagnosis and fix on Oracle Linux 8

Oracle Linux 8 — .NET Core — vulnerability — patch and remediation guide

🟠 High   ⏱ 15–60 min  Last verified: 5 September 2020 Affected versions: Oracle Linux 8 📖 ~4 min read  •  Source: ELSA advisory ELSA-2020-2143 Related CVEs: CVE-2020-1108 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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