December 2021 - Page 46 of 71

How To Secure React Applications Against XSS Attacks with HTTP-Only Cookies — step-by-step Docker tutorial on Progressive Robot

How To Secure React Applications Against XSS Attacks with HTTP-Only Cookies

In this tutorial, you will create a React application and mock API that implements a token-based authentication system set up in a local Docker container. You will exploit the token storage method with a cross-site scripting attack, then mitigate the issue with HTTP-only cookies. By the end of this tutorial, you’ll understand the security considerations needed to implement a functioning token-based authentication system alongside a React and Node web application.

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

Debian 11 — opt — vulnerability — patch and remediation guide

🟢 Low   ⏱ 5–15 min  Last verified: 25 May 2026 Affected versions: Debian 11 (bullseye) 📖 ~4 min read  •  Source: Debian Security Tracker Related CVEs: CVE-2003-0390 Upstream summary: Multiple buffer overflows in Options Parsing Tool (OPT) shared library 3.18 and earlier, when used in setuid programs, may allow local users to execute arbitrary […]

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Debian 11 — pyyaml — multiple vulnerabilities (5 CVEs) — patch and remediation guide — diagnosis and fix on Debian 11

Debian 11 — pyyaml — multiple vulnerabilities (5 CVEs) — patch and remediation guide

🟡 Medium   ⏱ 10–30 min  Last verified: 25 May 2026 Affected versions: Debian 11 (bullseye) 📖 ~4 min read  •  Source: Debian Security Tracker Related CVEs: CVE-2014-9130 CVE-2017-18342 CVE-2019-20477 CVE-2020-14343 CVE-2020-1747 Upstream summary: scanner.c in LibYAML 0.1.5 and 0.1.6, as used in the YAML-LibYAML (aka YAML-XS) module for Perl, allows context-dependent attackers to cause […]

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Installieren von R unter Ubuntu 20.04 — step-by-step Linux tutorial on Progressive Robot

Installieren von R unter Ubuntu 20.04

Die Open-Source-Programmiersprache R ist für die Ausführung von Datenanalysen und statistischer Datenverarbeitung weit verbreitet. Unterstützt durch die R Foundation für Statistische Datenverarbeitung ist sie eine zunehmend beliebte und erweiterbare Sprache mit einer aktiven…

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How to Set Up WireGuard VPN on RHEL 10 — step-by-step RHEL 10 tutorial on Progressive Robot

How to Set Up WireGuard VPN on RHEL 10

Introduction This tutorial demonstrates how to Set Up WireGuard VPN on RHEL 10 on RHEL 10. It is written for administrators who want a repeatable, well-explained walkthrough that goes beyond a bare command list and explains each configuration choice. Every command is tested against a freshly registered RHEL 10 system with the default AppStream repositories […]

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Debian 11 — ktorrent — multiple vulnerabilities (5 CVEs) — patch and remediation guide — diagnosis and fix on Debian 11

Debian 11 — ktorrent — multiple vulnerabilities (5 CVEs) — patch and remediation guide

🟡 Medium   ⏱ 10–30 min  Last verified: 25 May 2026 Affected versions: Debian 11 (bullseye) 📖 ~4 min read  •  Source: Debian Security Tracker Related CVEs: CVE-2007-1384 CVE-2007-1385 CVE-2007-1799 CVE-2008-5905 CVE-2008-5906 Upstream summary: Directory traversal vulnerability in torrent.cpp in KTorrent before 2.1.2 allows remote attackers to overwrite arbitrary files via ".." sequences in a […]

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How To Deploy Multiple Environments in Your Terraform Project Without Duplicating Code — step-by-step Devops tutorial on Progressive Robot

How To Deploy Multiple Environments in Your Terraform Project Without Duplicating Code

Some advanced features Terraform offers become useful when your project grows in size and complexity. It’s possible to alleviate the cost of maintaining complex infrastructure definitions for multiple environments by structuring your code to minimize repetitions and by introducing tool-assisted workflows for easier testing and deployment. In this tutorial, you’ll first deploy multiple infrastructure instances using different workspaces.

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Ubuntu 18.04 — flask-security — vulnerability — patch and remediation guide — diagnosis and fix on Ubuntu 18.04

Ubuntu 18.04 — flask-security — vulnerability — patch and remediation guide

🟢 Low   ⏱ 5–15 min  Last verified: 25 May 2026 Affected versions: Ubuntu 18.04 (bionic) 📖 ~4 min read  •  Source: Ubuntu Security Notice USN-6792-1 Related CVEs: CVE-2021-23385 Upstream summary: Naom Moshe discovered that Flask-Security incorrectly validated URLs. An attacker could use this issue to redirect users to arbitrary URLs. Table of contents Symptom […]

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How to Install Netdata on RHEL 8 — step-by-step RHEL 8 tutorial on Progressive Robot

How to Install Netdata on RHEL 8

Netdata is a lightweight, real-time performance monitoring agent that collects thousands of system and application metrics with per-second granularity and displays them through a built-in, zero-configuration web dashboard. Unlike heavier stacks, Netdata starts delivering useful insights within minutes of installation and requires virtually no ongoing maintenance. It can also stream metrics to a central parent […]

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