Comment installer et configurer SimpleSAMLphp pour l’authentification SAML sur Ubuntu 18.04
SimpleSAMLphp est une application d’authentification PHP open-source qui prend en charge SAML 2.0 en tant que fournisseur de services (SP) ou fournisseur…
Gentoo Linux — net-libs/pcre2 — 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-202006-16 Related CVEs: CVE-2019-20454 Upstream summary: PCRE2 has a flaw when handling JIT-compiled regex using the X pattern. Table of contents Symptom & Impact Environment & Reproduction Root Cause Analysis Quick Triage […]
How To Configure GoCD with Let’s Encrypt SSL Certificates on Ubuntu 16.04
GoCD is a powerful continuous integration and delivery platform designed to automate testing and release processes. With many advanced features like the ability to compare builds, visualize complex workflows, and automate build version tracking, GoCD…
Debian 9 — mailman — multiple vulnerabilities (3 CVEs) — patch and remediation guide
🟡 Medium ⏱ 10–30 min Last verified: 11 March 2020 Affected versions: Debian 9 (stretch) 📖 ~4 min read • Source: Debian Security Tracker Related CVEs: CVE-2018-0618 CVE-2018-5950 CVE-2020-12137 Table of contents Symptom & Impact Environment & Reproduction Root Cause Analysis Quick Triage Step-by-Step Diagnosis Solution – Primary Fix Solution – Alternative Approaches Verification […]
An Introduction To Regular Expressions
This tutorial will give an insight to regular expressions without going into particularities of any language. We will simply use egrep to explain the concepts. Regular expressions are templates to match patterns (or sometimes not to match patterns). They provide a way to describe and parse text.
RHEL 8 SELinux Denying httpd Access to Custom Content Path
🟡 Medium ⏱ 5–30 min Last verified: 10 March 2020 📖 ~1 min read Table of contents Symptom & Impact Environment & Reproduction Root Cause Analysis Quick Triage Step-by-Step Diagnosis Solution – Primary Fix Solution – Alternative Approaches Verification & Acceptance Criteria Rollback Plan Prevention & Hardening Related Errors & Cross-Refs References & Further […]
How to Configure Docker with TLS Authentication on Debian 10
Introduction Deploying configure docker with tls authentication on debian 10 on a Debian 10 Buster machine is straightforward thanks to Debian’s policy-compliant packaging. Unlike rpm-based distributions, Debian stores configuration helpers in /etc/default/, uses update-rc.d for older init scripts, and provides dpkg-reconfigure for interactive package configuration. This tutorial stays on the systemd path throughout. Prerequisites Before […]
Alpine Linux edge — xapian-core — vulnerability — patch and remediation guide
🟡 Medium ⏱ 10–30 min Last verified: 25 May 2026 Affected versions: Alpine Linux edge / fixed in 1.4.6-r0 📖 ~4 min read • Source: Alpine secdb entry — xapian-core 1.4.6-r0 Related CVEs: CVE-2018-0499 Upstream summary: Alpine main repository for vedge ships xapian-core 1.4.6-r0 which addresses CVE-2018-0499. Table of contents Symptom & Impact Environment […]
How To Use Certbot Standalone Mode to Retrieve Let’s Encrypt SSL Certificates on Debian 10
Let’s Encrypt is a service offering free SSL certificates through an automated API. In this tutorial, we’ll discuss Certbot’s _standalone_ mode and how to use it to secure other types of services, such as a mail server or a message broker like RabbitMQ, on Debian 10.
Debian 9 — opendmarc — vulnerability — patch and remediation guide
🟢 Low ⏱ 5–15 min Last verified: 10 March 2020 Affected versions: Debian 9 (stretch) 📖 ~4 min read • Source: Debian Security Tracker Related CVEs: CVE-2019-16378 Table of contents Symptom & Impact Environment & Reproduction Root Cause Analysis Quick Triage Step-by-Step Diagnosis Solution – Primary Fix Solution – Alternative Approaches Verification & Acceptance […]
