🟡 Medium ⏱ 5–30 min Last verified: 8 July 2022 📖 ~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 […]
🟡 Medium ⏱ 10–30 min Last verified: 25 May 2026 Affected versions: openSUSE Tumbleweed 📖 ~4 min read • Source: SUSE advisory SUSE-RU-2020:2072-1 (see also SUSE bugzilla) Related CVEs: CVE-2020-5390 CVE-2021-21238 CVE-2021-21239 Upstream summary: PySAML2 before 5.0.0 does not check that the signature in a SAML document is enveloped and thus signature wrapping is […]
🟡 Medium ⏱ 10–30 min Last verified: 25 May 2026 Affected versions: Alpine Linux edge / fixed in 22.1.0-r0 📖 ~4 min read • Source: Alpine secdb entry — py3-treq 22.1.0-r0 Related CVEs: CVE-2022-23607 Upstream summary: Alpine community repository for vedge ships py3-treq 22.1.0-r0 which addresses CVE-2022-23607. Table of contents Symptom & Impact Environment […]
Introduction Debian 11 Bullseye is built around the ethos of stability and free software. Setting up harden shared memory on debian 11 on Bullseye leverages the same proven Debian packaging system that powers millions of servers worldwide, while benefiting from the latest upstream releases included in the Bullseye freeze. Follow each step carefully and the […]
🟡 Medium ⏱ 10–30 min Last verified: 8 July 2022 Affected versions: Debian 11 (bullseye) 📖 ~4 min read • Source: Debian Security Tracker Related CVEs: CVE-2005-1270 CVE-2008-4982 CVE-2017-7480 Upstream summary: The (1) check_update.sh and (2) rkhunter script in Rootkit Hunter before 1.2.3-r1 create temporary files with predictable file names, which allows local users […]
Windows Subsystem for Linux is the tool that was released by Microsoft to get a full UNIX system inside of Windows. WSL opens up a bunch of new capabilities for developers using Windows, and is pretty fast for normal everyday web development tasks.
🟠 High ⏱ 15–60 min Last verified: 8 July 2022 Affected versions: Oracle Linux 8 📖 ~4 min read • Source: ELSA advisory ELSA-2022-0130 Related CVEs: CVE-2022-22747 CVE-2022-22737 CVE-2022-22751 CVE-2021-4140 CVE-2022-22740 CVE-2022-22739 Table of contents Symptom & Impact Environment & Reproduction Root Cause Analysis Quick Triage Step-by-Step Diagnosis Solution – Primary Fix Solution – […]
🟠 High ⏱ 15–60 min Last verified: 8 July 2022 Affected versions: Oracle Linux 8 📖 ~4 min read • Source: ELSA advisory ELSA-2021-9420 Related CVEs: CVE-2021-3656 CVE-2021-3653 Table of contents Symptom & Impact Environment & Reproduction Root Cause Analysis Quick Triage Step-by-Step Diagnosis Solution – Primary Fix Solution – Alternative Approaches Verification & […]
🟠 High ⏱ 15–60 min Last verified: 25 May 2026 Affected versions: Arch Linux (rolling release) 📖 ~4 min read • Source: Arch ASA ASA-201707-11 Related CVEs: CVE-2017-7529 CVE-2016-1247 CVE-2021-23017 CVE-2019-9516 CVE-2019-9513 CVE-2019-9511 Upstream summary: Type: information disclosure. Status: Fixed. Affected: 1.12.0-2. Fixed in: 1.12.1-1. Group: AVG-345. Table of contents Symptom & Impact Environment […]
Fail2ban is a service that can be run on your server to dynamically block clients that repeatedly fail to authenticate correctly with your services . This can help mitigate the affect of brute force attacks and illegitimate users of your services. In this guide, we’ll demonstrate how to install and configure fail2ban to protect SSH on a Debian 11 server.
