chris

Debian 11 — lxterminal — vulnerability — patch and remediation guide — diagnosis and fix on Debian 11

Debian 11 — lxterminal — vulnerability — patch and remediation guide

🟢 Low   ⏱ 5–15 min  Last verified: 16 December 2021 Affected versions: Debian 11 (bullseye) 📖 ~4 min read  •  Source: Debian Security Tracker Related CVEs: CVE-2016-10369 Upstream summary: unixsocket.c in lxterminal through 0.3.0 insecurely uses /tmp for a socket file, allowing a local user to cause a denial of service (preventing terminal launch), […]

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Ubuntu 20.04 — fail2ban — vulnerability — patch and remediation guide — diagnosis and fix on Ubuntu 20.04

Ubuntu 20.04 — fail2ban — vulnerability — patch and remediation guide

🟢 Low   ⏱ 5–15 min  Last verified: 16 December 2021 Affected versions: Ubuntu 20.04 (focal) 📖 ~4 min read  •  Source: Ubuntu Security Notice USN-5232-1 Related CVEs: CVE-2021-32749 Upstream summary: Jakub Żoczek discovered that certain Fail2ban actions handled whois responses in an insecure way. If Fail2ban was configured to use certain mail actions like […]

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How to Install Deno on FreeBSD 13 — step-by-step FreeBSD 13 tutorial on Progressive Robot

How to Install Deno on FreeBSD 13

Introduction FreeBSD 13 is a UNIX-derived operating system renowned for its network stack performance, ZFS integration, and Jail isolation primitives. Setting up install deno on freebsd 13 on FreeBSD 13 follows the rc.conf/service(8) paradigm rather than systemd, which means enabling a service and configuring its startup options are done differently from any Linux distribution. This […]

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openSUSE Tumbleweed — ruby2.7-rubygem-kramdown — multiple vulnerabilities (2 CVEs) — patch and remediation guide — diagnosis and fix on openSUSE Tumbleweed

openSUSE Tumbleweed — ruby2.7-rubygem-kramdown — multiple vulnerabilities (2 CVEs) — patch and remediation guide

🔴 Critical   ⏱ 15–90 min  Last verified: 25 May 2026 Affected versions: openSUSE Tumbleweed 📖 ~4 min read  •  Source: SUSE advisory openSUSE-SU-2025:15119-1 (see also SUSE bugzilla) Related CVEs: CVE-2021-28834 CVE-2020-14001 Upstream summary: Kramdown before 2.3.1 does not restrict Rouge formatters to the Rouge::Formatters namespace, and thus arbitrary classes can be instantiated. Table of […]

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Debian 10 — debian-edu-config — multiple vulnerabilities (2 CVEs) — patch and remediation guide — diagnosis and fix on Debian 10

Debian 10 — debian-edu-config — multiple vulnerabilities (2 CVEs) — patch and remediation guide

🟢 Low   ⏱ 5–15 min  Last verified: 16 December 2021 Affected versions: Debian 10 (buster) 📖 ~4 min read  •  Source: Debian Security Tracker Related CVEs: CVE-2019-3467 CVE-2021-20001 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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How to Configure Network Load Balancing (NLB) on Windows Server 2016 — step-by-step Windows Server 2016 tutorial on Progressive Robot

How to Configure Network Load Balancing (NLB) on Windows Server 2016

How to Configure Network Load Balancing (NLB) on Windows Server 2016 Network Load Balancing (NLB) is a Windows Server feature that distributes incoming TCP/IP network traffic across multiple servers, improving availability and scalability of services such as web servers, terminal services, and VPN gateways. NLB works at Layer 4 (transport layer) and does not require […]

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