Package Management

Oracle Linux 8 — kernel — security and stability fixes — required update — diagnosis and fix on Oracle Linux 8

Oracle Linux 8 — kernel — security and stability fixes — required update (ELSA-2021-5227)

🟡 Medium   ⏱ 10–30 min  Last verified: 24 January 2021 Affected versions: Oracle Linux 8 📖 ~4 min read  •  Source: ELSA advisory ELSA-2021-5227 Related CVEs: CVE-2021-20321 Table of contents Symptom & Impact Environment & Reproduction Root Cause Analysis Quick Triage Step-by-Step Diagnosis Solution – Primary Fix Solution – Alternative Approaches Verification & Acceptance […]

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Arch Linux — telegram-desktop — vulnerability — patch and remediation guide — diagnosis and fix on Arch Linux

Arch Linux — telegram-desktop — vulnerability — patch and remediation guide

🟢 Low   ⏱ 5–15 min  Last verified: 25 May 2026 Affected versions: Arch Linux (rolling release) 📖 ~4 min read  •  Source: Arch ASA ASA-202107-45 Related CVEs: CVE-2021-36769 Upstream summary: Type: content spoofing. Status: Fixed. Affected: 2.8.4-3. Fixed in: 2.8.11-1. Group: AVG-2170. Table of contents Symptom & Impact Environment & Reproduction Root Cause Analysis […]

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How to Configure HAProxy SSL Termination on Oracle Linux 8 — step-by-step Oracle Linux 8 tutorial on Progressive Robot

How to Configure HAProxy SSL Termination on Oracle Linux 8

Introduction How to Configure HAProxy SSL Termination on Oracle Linux 8 on Oracle Linux 8 provides administrators with a robust, enterprise-ready workflow that integrates cleanly with systemd, SELinux, firewalld, and the modern AppStream module system. In this tutorial we will walk through every step required, from package installation to verification, so that the resulting configuration […]

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Ubuntu 18.04 — php-nette — vulnerability — patch and remediation guide — diagnosis and fix on Ubuntu 18.04

Ubuntu 18.04 — php-nette — vulnerability — patch and remediation guide

🟢 Low   ⏱ 5–15 min  Last verified: 24 January 2021 Affected versions: Ubuntu 18.04 (bionic) 📖 ~4 min read  •  Source: Ubuntu Security Notice USN-5983-1 Related CVEs: CVE-2020-15227 Upstream summary: Cyku Hong discovered that Nette was not properly handling and validating data used for code generation. A remote attacker could possibly use this issue […]

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Ubuntu 14.04 — openldap — multiple vulnerabilities (20 CVEs) — patch and remediation guide — diagnosis and fix on Ubuntu 14.04

Ubuntu 14.04 — openldap — multiple vulnerabilities (20 CVEs) — patch and remediation guide

🟠 High   ⏱ 15–60 min  Last verified: 24 January 2021 Affected versions: Ubuntu 14.04 (trusty) 📖 ~4 min read  •  Source: Ubuntu Security Notice USN-7713-1 Related CVEs: CVE-2021-27212 CVE-2020-36229 CVE-2020-36230 CVE-2020-36226 CVE-2020-36221 CVE-2020-36224 CVE-2020-36228 CVE-2020-36227  +12 more Upstream summary: It was discovered that OpenLDAP incorrectly handled X.509 DN parsing. A remote attacker could possibly […]

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Ubuntu 16.04 — yara — multiple vulnerabilities (17 CVEs) — patch and remediation guide — diagnosis and fix on Ubuntu 16.04

Ubuntu 16.04 — yara — multiple vulnerabilities (17 CVEs) — patch and remediation guide

🟠 High   ⏱ 15–60 min  Last verified: 24 January 2021 Affected versions: Ubuntu 16.04 (xenial) 📖 ~4 min read  •  Source: Ubuntu Security Notice USN-8080-1 Related CVEs: CVE-2018-19976 CVE-2017-9304 CVE-2018-19974 CVE-2017-8294 CVE-2018-12034 CVE-2017-8929 CVE-2021-45429 CVE-2017-11328  +9 more Upstream summary: Kamil Frankowicz discovered that a number of YARA's functions generated memory exceptions when processing specially […]

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How to Deploy a Flask Application with Gunicorn and Nginx on RHEL 7 — step-by-step RHEL 7 tutorial on Progressive Robot

How to Deploy a Flask Application with Gunicorn and Nginx on RHEL 7

How to Deploy a Flask Application with Gunicorn and Nginx on RHEL 7 Flask is a lightweight Python web framework ideal for building APIs and web applications. While Flask’s built-in development server is useful for testing, it is not suitable for production workloads. The standard production stack on RHEL 7 combines Gunicorn as a WSGI […]

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Oracle Linux 8 — .NET 5.0 security and bugfix update — diagnosis and fix on Oracle Linux 8

Oracle Linux 8 — .NET 5.0 security and bugfix update

🟠 High   ⏱ 15–60 min  Last verified: 23 January 2021 Affected versions: Oracle Linux 8 📖 ~4 min read  •  Source: ELSA advisory ELSA-2022-0830 Related CVEs: CVE-2022-24464 CVE-2022-24512 CVE-2020-8927 Table of contents Symptom & Impact Environment & Reproduction Root Cause Analysis Quick Triage Step-by-Step Diagnosis Solution – Primary Fix Solution – Alternative Approaches Verification […]

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FreeBSD 12 — py36-pillow — multiple vulnerabilities (6 CVEs) — patch and remediation guide — diagnosis and fix on FreeBSD 12

FreeBSD 12 — py36-pillow — multiple vulnerabilities (6 CVEs) — patch and remediation guide

🟡 Medium   ⏱ 10–30 min  Last verified: 23 January 2021 Affected versions: FreeBSD 12 📖 ~4 min read  •  Source: FreeBSD VuXML VuXML topic: Pillow — Multiple vulnerabilities Related CVEs: CVE-2019-16865 CVE-2019-19911 CVE-2020-5310 CVE-2020-5311 CVE-2020-5312 CVE-2020-5313 Upstream summary: Pillow developers report: This release addresses several security problems, as well as addressing CVE-2019-19911. CVE-2019-19911 is […]

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