🟠 High ⏱ 15–60 min Last verified: 25 May 2026 Affected versions: Alpine Linux edge / fixed in 1.34-r2 📖 ~4 min read • Source: Alpine secdb entry — tar 1.34-r2 Related CVEs: CVE-2022-48303 CVE-2021-20193 CVE-2018-20482 CVE-2016-6321 CVE-2021-32803 CVE-2021-32804 CVE-2021-37701 Upstream summary: Alpine main repository for vedge ships tar 1.34-r2 which addresses CVE-2022-48303. Table […]
IP addresses, networks, submasks, and CIDR notation can be difficult concepts to understand. In this guide, we will cover some of the ideas behind how these systems work together to allow computers to communicate over the internet.
🟢 Low ⏱ 5–15 min Last verified: 10 May 2023 Affected versions: Ubuntu 16.04 (xenial) 📖 ~4 min read • Source: Ubuntu Security Notice USN-7208-1 Related CVEs: CVE-2022-42920 Upstream summary: Felix Wilhelm discovered that Apache Commons BCEL APIs incorrectly handled parameters due to a memory issue. An attacker supplying malicious input could exploit this […]
Discord is a hosted chat system similar to Slack. In this tutorial, you will configure your own Discord server, create a Discord webhook, write a Bash script that will check the status of a list of websites, and test notifications from your server to your Discord channel.
🟠 High ⏱ 15–60 min Last verified: 10 May 2023 Affected versions: Oracle Linux 8 📖 ~4 min read • Source: ELSA advisory ELSA-2023-0838 Related CVEs: CVE-2022-38023 Table of contents Symptom & Impact Environment & Reproduction Root Cause Analysis Quick Triage Step-by-Step Diagnosis Solution – Primary Fix Solution – Alternative Approaches Verification & Acceptance […]
![How To Install R on Ubuntu 20.04 [Quickstart] — step-by-step Linux tutorial on Progressive Robot](https://www.progressiverobot.com/wp-content/uploads/2026/05/how-to-install-r-on-ubuntu-20-04-quickstart-82385-featured.png "How To Install R on Ubuntu 20.04 [Quickstart] 6")
An open-source programming language, R specializes in statistical computing and graphics. In this tutorial, we will install R on an Ubuntu 20.04 server. For a more detailed version of this tutorial, with more thorough explanations of each step, please refer to [How To…
🟠 High ⏱ 15–60 min Last verified: 10 May 2023 Affected versions: Oracle Linux 9 📖 ~4 min read • Source: ELSA advisory ELSA-2024-0001 Related CVEs: CVE-2023-6858 CVE-2023-6859 CVE-2023-50762 CVE-2023-6861 CVE-2023-6864 CVE-2023-6857 Table of contents Symptom & Impact Environment & Reproduction Root Cause Analysis Quick Triage Step-by-Step Diagnosis Solution – Primary Fix Solution – […]
Memory object caching systems like Memcached can optimize backend database performance by temporarily storing information in memory, retaining frequently or recently requested records. In this guide, we will cover how to protect your Memcached server by binding your installation to a local or private interface and creating an authorized user for your Memcached instance.
🟠 High ⏱ 15–60 min Last verified: 10 May 2023 Affected versions: Oracle Linux 9 📖 ~4 min read • Source: ELSA advisory ELSA-2023-7791 Related CVEs: CVE-2023-44446 CVE-2023-44429 Table of contents Symptom & Impact Environment & Reproduction Root Cause Analysis Quick Triage Step-by-Step Diagnosis Solution – Primary Fix Solution – Alternative Approaches Verification & […]
How to Install and Use Helm on RHEL 7 Helm is the package manager for Kubernetes — often described as the “apt” or “yum” of the Kubernetes ecosystem. It allows you to define, install, and upgrade even the most complex Kubernetes applications using reusable templates called charts. A single Helm chart can encapsulate dozens of […]
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