July 2021 - Page 59 of 69

FreeBSD 13 — py37-nicotine-plus — vulnerability — patch and remediation guide — diagnosis and fix on FreeBSD 13

FreeBSD 13 — py37-nicotine-plus — vulnerability — patch and remediation guide

🟢 Low   ⏱ 5–15 min  Last verified: 25 May 2026 Affected versions: FreeBSD 13 📖 ~4 min read  •  Source: FreeBSD VuXML VuXML topic: py-nicotine-plus — Denial of service vulnerability Related CVEs: CVE-2021-45848 Upstream summary: ztauras reports: Denial of service (DoS) vulnerability in Nicotine+ starting with version 3.0.3 and prior to version 3.2.1 allows […]

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FreeBSD 13 — py39-lmdb — multiple vulnerabilities (5 CVEs) — patch and remediation guide — diagnosis and fix on FreeBSD 13

FreeBSD 13 — py39-lmdb — multiple vulnerabilities (5 CVEs) — patch and remediation guide

🟡 Medium   ⏱ 10–30 min  Last verified: 25 May 2026 Affected versions: FreeBSD 13 📖 ~4 min read  •  Source: FreeBSD VuXML VuXML topic: py39-lmdb — multiple vulnerabilities Related CVEs: CVE-2019-16224 CVE-2019-16225 CVE-2019-16226 CVE-2019-16227 CVE-2019-16228 Upstream summary: TeamSeri0us reports: An issue was discovered in py-lmdb 0.97. For certain values of md_flags, mdb_node_add does not […]

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FreeBSD 13 — php56-sqlite — security advisory — patch and remediation guide — diagnosis and fix on FreeBSD 13

FreeBSD 13 — php56-sqlite — security advisory — patch and remediation guide

🟢 Low   ⏱ 5–15 min  Last verified: 25 May 2026 Affected versions: FreeBSD 13 📖 ~4 min read  •  Source: FreeBSD VuXML VuXML topic: php — use-after-free vulnerability Upstream summary: Symeon Paraschoudis reports: Use-after-free vulnerability in sqlite3SafetyCheckSickOrOk() Table of contents Symptom & Impact Environment & Reproduction Root Cause Analysis Quick Triage Step-by-Step Diagnosis Solution […]

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How to Configure Bridge Networking on RHEL 9 — step-by-step RHEL 9 tutorial on Progressive Robot

How to Configure Bridge Networking on RHEL 9

A network bridge is a Layer 2 virtual switch that allows virtual machines and containers to share a physical network interface and appear as first-class devices on the local network. On RHEL 9, NetworkManager is the authoritative tool for creating and managing bridges, replacing the deprecated brctl-only workflows of older distributions. Bridges are essential for […]

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FreeBSD 13 — postgresql91-server — multiple vulnerabilities (14 CVEs) — patch and remediation guide — diagnosis and fix on FreeBSD 13

FreeBSD 13 — postgresql91-server — multiple vulnerabilities (14 CVEs) — patch and remediation guide

🟠 High   ⏱ 15–60 min  Last verified: 25 May 2026 Affected versions: FreeBSD 13 📖 ~4 min read  •  Source: FreeBSD VuXML VuXML topic: PostgreSQL — Denial-of-Service and Code Injection Vulnerabilities Related CVEs: CVE-2014-8161 CVE-2015-0241 CVE-2015-0242 CVE-2015-0243 CVE-2015-0244 CVE-2015-3165 CVE-2015-3166 CVE-2015-3167  +6 more Upstream summary: PostgreSQL project reports: Security Fixes nested CASE expressions + […]

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Introduction to Web Servers — step-by-step Web Servers tutorial on Progressive Robot

Introduction to Web Servers

A web server’s primary role is to serve web pages for a website. They act as an intermediary between the backend and the frontend, serving up resources like HTML and CSS files to JSON data, all generated dynamically on the fly or served statically. It uses protocols such as HTTP or HTTPS in a request-and-response format, allowing communication between backend machines and a requesting client’s web browser.

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Ubuntu 18.04 — python-pysaml2 — multiple vulnerabilities (2 CVEs) — patch and remediation guide — diagnosis and fix on Ubuntu 18.04

Ubuntu 18.04 — python-pysaml2 — multiple vulnerabilities (2 CVEs) — 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-5066-1 Related CVEs: CVE-2021-21239 CVE-2020-5390 Upstream summary: Brian Wolff discovered that PySAML2 incorrectly validated cryptographic signatures. A remote attacker could possibly use this issue to alter SAML documents. Table of […]

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