Linux

How to Install PHP 8.3 on CentOS Stream 9 — step-by-step CentOS Stream 9 tutorial on Progressive Robot

How to Install PHP 8.3 on CentOS Stream 9

Introduction How to Install PHP 8.3 on CentOS Stream 9 on CentOS Stream 9 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 is […]

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AlmaLinux 8 — python-reportlab — vulnerability — patch and remediation guide — diagnosis and fix on AlmaLinux 8

AlmaLinux 8 — python-reportlab — vulnerability — patch and remediation guide

🟠 High   ⏱ 15–60 min  Last verified: 25 May 2026 Affected versions: AlmaLinux 8 📖 ~4 min read  •  Source: AlmaLinux ALSA ALSA-2023:5790 Related CVEs: CVE-2019-19450 Upstream summary: Python-reportlab is a library used for generation of PDF documents. Security Fix(es): * python-reportlab: code injection in paraparser.py allows code execution (CVE-2019-19450) For more details about […]

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Debian 11 — davfs2 — multiple vulnerabilities (2 CVEs) — patch and remediation guide — diagnosis and fix on Debian 11

Debian 11 — davfs2 — multiple vulnerabilities (2 CVEs) — patch and remediation guide

🟢 Low   ⏱ 5–15 min  Last verified: 20 March 2022 Affected versions: Debian 11 (bullseye) 📖 ~4 min read  •  Source: Debian Security Tracker Related CVEs: CVE-2005-1774 CVE-2013-4362 Upstream summary: WEB-DAV Linux File System (davfs2) 0.2.3 does not properly enforce Unix permissions, which allows local users to write arbitrary files on a davfs2 mounted […]

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Debian 10 — htmldoc — vulnerability — patch and remediation guide — diagnosis and fix on Debian 10

Debian 10 — htmldoc — vulnerability — patch and remediation guide

🟢 Low   ⏱ 5–15 min  Last verified: 20 March 2022 Affected versions: Debian 10 (buster) 📖 ~4 min read  •  Source: Debian Security Tracker Related CVEs: CVE-2021-23158 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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Debian 11 — kildclient — vulnerability — patch and remediation guide — diagnosis and fix on Debian 11

Debian 11 — kildclient — vulnerability — patch and remediation guide

🟢 Low   ⏱ 5–15 min  Last verified: 20 March 2022 Affected versions: Debian 11 (bullseye) 📖 ~4 min read  •  Source: Debian Security Tracker Related CVEs: CVE-2017-17511 Upstream summary: KildClient 3.1.0 does not validate strings before launching the program specified by the BROWSER environment variable, which might allow remote attackers to conduct argument-injection attacks […]

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openSUSE Tumbleweed — ruby2.7-rubygem-actionpack — multiple vulnerabilities (4 CVEs) — patch and remediation guide — diagnosis and fix on openSUSE Tumbleweed

openSUSE Tumbleweed — ruby2.7-rubygem-actionpack — multiple vulnerabilities (4 CVEs) — patch and remediation guide

🟠 High   ⏱ 15–60 min  Last verified: 25 May 2026 Affected versions: openSUSE Tumbleweed 📖 ~4 min read  •  Source: SUSE advisory openSUSE-SU-2021:0797-1 (see also SUSE bugzilla) Related CVEs: CVE-2021-22885 CVE-2021-22904 CVE-2021-22881 CVE-2021-22902 Upstream summary: A possible information disclosure / unintended method execution vulnerability in Action Pack >= 2.0.0 when using the `redirect_to` or […]

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Debian 11 — pyxdg — multiple vulnerabilities (2 CVEs) — patch and remediation guide — diagnosis and fix on Debian 11

Debian 11 — pyxdg — multiple vulnerabilities (2 CVEs) — patch and remediation guide

🟢 Low   ⏱ 5–15 min  Last verified: 20 March 2022 Affected versions: Debian 11 (bullseye) 📖 ~4 min read  •  Source: Debian Security Tracker Related CVEs: CVE-2014-1624 CVE-2019-12761 Upstream summary: Race condition in the xdg.BaseDirectory.get_runtime_dir function in python-xdg 0.25 allows local users to overwrite arbitrary files by pre-creating /tmp/pyxdg-runtime-dir-fallback-victim to point to a victim-owned […]

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Ubuntu 20.04 — hivex — vulnerability — patch and remediation guide — diagnosis and fix on Ubuntu 20.04

Ubuntu 20.04 — hivex — vulnerability — patch and remediation guide

🟢 Low   ⏱ 5–15 min  Last verified: 20 March 2022 Affected versions: Ubuntu 20.04 (focal) 📖 ~4 min read  •  Source: Ubuntu Security Notice USN-5148-1 Related CVEs: CVE-2021-3504 Upstream summary: It was discovered that hivex incorrectly handled certain input. An attacker could use this vulnerability to cause a crash or obtain sensitive information. Table […]

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How to Enable Brotli Compression on Nginx on Debian 11 — step-by-step Debian 11 tutorial on Progressive Robot

How to Enable Brotli Compression on Nginx on Debian 11

Introduction Debian 11 Bullseye is built around the ethos of stability and free software. Setting up enable brotli compression on nginx 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 […]

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Oracle Linux 8 — redis:6 — vulnerability — patch and remediation guide — diagnosis and fix on Oracle Linux 8

Oracle Linux 8 — redis:6 — vulnerability — patch and remediation guide (ELSA-2021-3945)

🟠 High   ⏱ 15–60 min  Last verified: 20 March 2022 Affected versions: Oracle Linux 8 📖 ~4 min read  •  Source: ELSA advisory ELSA-2021-3945 Related CVEs: CVE-2021-32627 CVE-2021-32675 CVE-2021-32626 CVE-2021-32628 CVE-2021-32687 CVE-2021-41099 Table of contents Symptom & Impact Environment & Reproduction Root Cause Analysis Quick Triage Step-by-Step Diagnosis Solution – Primary Fix Solution – […]

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