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Ubuntu 18.04 — linux-oem-osp1 — multiple vulnerabilities (20 CVEs) — patch and remediation guide — diagnosis and fix on Ubuntu 18.04

Ubuntu 18.04 — linux-oem-osp1 — multiple vulnerabilities (20 CVEs) — patch and remediation guide

🟠 High   ⏱ 15–60 min  Last verified: 21 June 2021 Affected versions: Ubuntu 18.04 (bionic) 📖 ~4 min read  •  Source: Ubuntu Security Notice USN-4627-1 Related CVEs: CVE-2020-8694 CVE-2020-12351 CVE-2020-12352 CVE-2020-24490 CVE-2020-16119 CVE-2020-16120 CVE-2020-14386 CVE-2020-12771  +12 more Upstream summary: Moritz Lipp, Michael Schwarz, Andreas Kogler, David Oswald, Catherine Easdon, Claudio Canella, and Daniel Gruss […]

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Ubuntu 18.04 — ipmitool — vulnerability — patch and remediation guide — diagnosis and fix on Ubuntu 18.04

Ubuntu 18.04 — ipmitool — vulnerability — patch and remediation guide

🟢 Low   ⏱ 5–15 min  Last verified: 21 June 2021 Affected versions: Ubuntu 18.04 (bionic) 📖 ~4 min read  •  Source: Ubuntu Security Notice USN-5997-1 Related CVEs: CVE-2020-5208 Upstream summary: It was discovered that IPMItool was not properly checking the data received from a remote LAN party. A remote attacker could possibly use this […]

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openSUSE Tumbleweed — python36-urllib3 — multiple vulnerabilities (3 CVEs) — patch and remediation guide — diagnosis and fix on openSUSE Tumbleweed

openSUSE Tumbleweed — python36-urllib3 — multiple vulnerabilities (3 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-2021:2012-1 (see also SUSE bugzilla) Related CVEs: CVE-2021-33503 CVE-2018-20060 CVE-2019-9740 Upstream summary: An issue was discovered in urllib3 before 1.26.5. When provided with a URL containing many @ characters in the authority […]

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How to Configure Active Directory Sites and Services on Windows Server 2019 — step-by-step Windows Server 2019 tutorial on Progressive Robot

How to Configure Active Directory Sites and Services on Windows Server 2019

Introduction to Active Directory Sites and Services Active Directory Sites and Services is a Microsoft Management Console (MMC) snap-in that administrators use to manage the replication topology of Active Directory Domain Services (AD DS). Sites define the physical or logical grouping of well-connected IP subnets. By configuring sites correctly, you control how AD DS replication […]

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Ubuntu 16.04 — mailman — multiple vulnerabilities (15 CVEs) — patch and remediation guide — diagnosis and fix on Ubuntu 16.04

Ubuntu 16.04 — mailman — multiple vulnerabilities (15 CVEs) — patch and remediation guide

🟠 High   ⏱ 15–60 min  Last verified: 21 June 2021 Affected versions: Ubuntu 16.04 (xenial) 📖 ~4 min read  •  Source: Ubuntu Security Notice USN-8067-1 Related CVEs: CVE-2021-44227 CVE-2021-43331 CVE-2021-43332 https://launchpad.net/bugs/1949401 https://launchpad.net/mailman/+bug/1949403 CVE-2021-42096 CVE-2021-42097 CVE-2020-15011  +7 more Upstream summary: It was discovered that Mailman incorrectly handled CSRF tokens. A remote list member or moderator […]

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openSUSE Tumbleweed — python36-pydantic — vulnerability — patch and remediation guide — diagnosis and fix on openSUSE Tumbleweed

openSUSE Tumbleweed — python36-pydantic — vulnerability — patch and remediation guide

🟠 High   ⏱ 15–60 min  Last verified: 25 May 2026 Affected versions: openSUSE Tumbleweed 📖 ~4 min read  •  Source: SUSE security advisory (see also SUSE bugzilla) Related CVEs: CVE-2021-29510 Upstream summary: Pydantic is a data validation and settings management using Python type hinting. In affected versions passing either `'infinity'`, `'inf'` or `float('inf')` (or […]

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Oracle Linux 8 — binutils — vulnerability — patch and remediation guide — diagnosis and fix on Oracle Linux 8

Oracle Linux 8 — binutils — vulnerability — patch and remediation guide (ELSA-2021-4595)

🟡 Medium   ⏱ 10–30 min  Last verified: 21 June 2021 Affected versions: Oracle Linux 8 📖 ~4 min read  •  Source: ELSA advisory ELSA-2021-4595 Related CVEs: CVE-2021-42574 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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A Comparison of (Rack) Web Servers for Ruby Web Applications — step-by-step Programming tutorial on Progressive Robot

A Comparison of (Rack) Web Servers for Ruby Web Applications

In this the cloud provider article, we are going to compare various popular web servers that power Ruby based web applications. However before diving in, we will provide an introduction to the mechanics behind how the process mentioned above works as we get familiar with the Rack and middleware collection.

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Oracle Linux 8 — grilo — vulnerability — patch and remediation guide — diagnosis and fix on Oracle Linux 8

Oracle Linux 8 — grilo — vulnerability — patch and remediation guide (ELSA-2021-4339)

🟡 Medium   ⏱ 10–30 min  Last verified: 21 June 2021 Affected versions: Oracle Linux 8 📖 ~4 min read  •  Source: ELSA advisory ELSA-2021-4339 Related CVEs: CVE-2021-39365 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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