TypeScript Enum Declaration and Merging
Here’s a short post explaining how to create and merge Enums in TypeScript.
FreeBSD 12 — openvpn-polarssl — multiple vulnerabilities (8 CVEs) — patch and remediation guide
🟡 Medium ⏱ 10–30 min Last verified: 6 June 2019 Affected versions: FreeBSD 12 📖 ~4 min read • Source: FreeBSD VuXML VuXML topic: OpenVPN — out-of-bounds write in legacy key-method 1 Related CVEs: CVE-2017-12166 CVE-2017-7478 CVE-2017-7479 CVE-2017-7508 CVE-2017-7512 CVE-2017-7520 CVE-2017-7521 CVE-2017-7522 Upstream summary: Steffan Karger reports: The bounds check in read_key() was performed […]
How to Configure Hyper-V Virtual Networking on Windows Server 2019
Introduction to Hyper-V Virtual Networking on Windows Server 2019 Hyper-V virtual networking is the fabric that connects virtual machines to each other, to the physical network, and to the Hyper-V host. Windows Server 2019 introduces several significant networking improvements over previous versions, including support for Software Defined Networking (SDN), the Virtual Filtering Platform (VFP) extension, […]
Getting Started with React Native Elements UI
Learn how to use style your React Native components using the React Native Elements cross platform UI toolkit.
Ubuntu 18.04 — flightcrew — multiple vulnerabilities (3 CVEs) — patch and remediation guide
🟡 Medium ⏱ 10–30 min Last verified: 6 June 2019 Affected versions: Ubuntu 18.04 (bionic) 📖 ~4 min read • Source: Ubuntu Security Notice USN-4055-1 Related CVEs: CVE-2019-13032 CVE-2019-13241 CVE-2019-13453 Upstream summary: Mike Salvatore discovered that FlightCrew improperly handled certain malformed EPUB files. An attacker could potentially use this vulnerability to cause a denial […]
openSUSE Tumbleweed — iucode-tool — vulnerability — patch and remediation guide
🟠 High ⏱ 15–60 min Last verified: 25 May 2026 Affected versions: openSUSE Tumbleweed 📖 ~4 min read • Source: SUSE security advisory (see also SUSE bugzilla) Related CVEs: CVE-2017-0357 Upstream summary: A heap-overflow flaw exists in the -tr loader of iucode-tool starting with v1.4 and before v2.1.1, potentially leading to SIGSEGV, or heap […]
How To Use Python-Markdown with Flask and SQLite
Python-Markdown is a Python library that allows you to convert Markdown text to HTML; it mostly follows the Markdown standard with a few minor differences to the standard Markdown syntax. In this tutorial, you’ll use Flask, SQLite, and Python-Markdown to build a small note-taking web application that supports formatting text using Markdown. The app will allow users to display, create, and format notes with h
How to Use Ansible Roles to Abstract your Infrastructure Environment
This tutorial will explore how to create roles with templates and static files. Once you are familiar with the fundamentals of building roles, we’ll use [Ansible Galaxy](https://galaxy.ansible.com/) to incorporate community contributed roles into playbooks. By the end of this tutorial you will be able to create your own environment specific roles for your servers and use them in your own playbooks.
How to Set Up Alertmanager with PagerDuty and Slack Integration on RHEL 8
Alertmanager handles alert routing, deduplication, and notification dispatch for Prometheus. By integrating it with Slack and PagerDuty, your team receives real-time notifications through familiar channels while on-call engineers get paged for critical incidents. This tutorial walks through installing Alertmanager on RHEL 8, configuring receivers for both platforms, setting up routing logic, and verifying the setup […]
SLES 15 — libgnomesu — vulnerability — patch and remediation guide
🟡 Medium ⏱ 10–30 min Last verified: 6 June 2019 Affected versions: SLES 15 📖 ~4 min read • Source: SUSE security advisory (see also SUSE bugzilla) Related CVEs: CVE-2011-1946 Upstream summary: gnomesu-pam-backend in libgnomesu 1.0.0 prints an error message but proceeds with the non-error code path upon failure of the setgid or setuid […]
