July 2020 - Page 63 of 69

How to Configure Apache mod_security on FreeBSD 12 — step-by-step FreeBSD 12 tutorial on Progressive Robot

How to Configure Apache mod_security on FreeBSD 12

Introduction FreeBSD 12 is a UNIX-derived operating system renowned for its network stack performance, ZFS integration, and Jail isolation primitives. Setting up configure apache mod_security on freebsd 12 on FreeBSD 12 follows the rc.conf/service(8) paradigm rather than systemd, which means enabling a service and configuring its startup options are done differently from any Linux distribution. […]

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Arch Linux — ipmitool — vulnerability — patch and remediation guide — diagnosis and fix on Arch Linux

Arch Linux — ipmitool — vulnerability — patch and remediation guide

🟠 High   ⏱ 15–60 min  Last verified: 25 May 2026 Affected versions: Arch Linux (rolling release) 📖 ~4 min read  •  Source: Arch ASA ASA-202102-39 Related CVEs: CVE-2020-5208 Upstream summary: Type: arbitrary code execution. Status: Fixed. Affected: 1.8.18-6. Fixed in: 1.8.18-7. Group: AVG-1596. Table of contents Symptom & Impact Environment & Reproduction Root Cause […]

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Ubuntu 16.04 — gsl — vulnerability — patch and remediation guide — diagnosis and fix on Ubuntu 16.04

Ubuntu 16.04 — gsl — vulnerability — patch and remediation guide

🟢 Low   ⏱ 5–15 min  Last verified: 25 May 2026 Affected versions: Ubuntu 16.04 (xenial) 📖 ~4 min read  •  Source: Ubuntu Security Notice USN-6472-1 Related CVEs: CVE-2020-35357 Upstream summary: It was discovered that GNU Scientific Library incorrectly handled certain inputs. If a user or an automated system were tricked into opening a specially […]

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Python 2 vs Python 3: Practical Considerations — step-by-step Python tutorial on Progressive Robot

Python 2 vs Python 3: Practical Considerations

Python is an extremely readable and versatile programming language. While Python 2.7 and Python 3 share many similar capabilities, they should not be thought of as entirely interchangeable. This article will take you through the key differences to consider when choosing on whether to work in Python 2 or Python 3 for your development projects.

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Ubuntu 18.04 — postgresql-common — vulnerability — patch and remediation guide — diagnosis and fix on Ubuntu 18.04

Ubuntu 18.04 — postgresql-common — vulnerability — 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-4194-1 Related CVEs: CVE-2019-3466 Upstream summary: Rich Mirch discovered that the postgresql-common pg_ctlcluster script incorrectly handled directory creation. A local attacker could possibly use this issue to escalate privileges. Table […]

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How To Use Primary Keys in SQL — step-by-step DevOps tutorial on Progressive Robot

How To Use Primary Keys in SQL

In SQL, primary keys serve as identifiers for individual rows in a table. In this tutorial, you’ll learn about primary keys and use a few different kinds to identify unique rows in database tables. Using some sample datasets, you’ll create primary keys on single columns and multiple columns, and use autoincrementing sequential keys.

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Ubuntu 18.04 — spamassassin — multiple vulnerabilities (8 CVEs) — patch and remediation guide — diagnosis and fix on Ubuntu 18.04

Ubuntu 18.04 — spamassassin — multiple vulnerabilities (8 CVEs) — patch and remediation guide

🟡 Medium   ⏱ 10–30 min  Last verified: 25 May 2026 Affected versions: Ubuntu 18.04 (bionic) 📖 ~4 min read  •  Source: Ubuntu Security Notice USN-4899-1 Related CVEs: CVE-2020-1946 CVE-2020-1930 CVE-2020-1931 CVE-2018-11805 CVE-2019-12420 CVE-2017-15705 CVE-2018-11780 CVE-2018-11781 Upstream summary: Damian Lukowski discovered that SpamAssassin incorrectly handled certain CF files. If a user or automated system were […]

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