March 2023 - Page 43 of 72

Common Problems 117481

Ubuntu 20.04 LTS UFW Rules Applied but Traffic Still Blocked

🟡 Medium   ⏱ 5–30 min  Last verified: 19 May 2026 Affected versions: 20.04 LTS 📖 ~1 min read Table of contents Symptom & Impact Environment & Reproduction Root Cause Analysis Quick Triage Step-by-Step Diagnosis Solution – Primary Fix Solution – Alternative Approaches Verification & Acceptance Criteria Rollback Plan Prevention & Hardening Related Errors & […]

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Windows Server 2016 — KB5028952 — multiple vulnerabilities (2 CVEs) — patch and remediation guide — diagnosis and fix on Windows Server 2016

Windows Server 2016 — KB5028952 — multiple vulnerabilities (2 CVEs) — patch and remediation guide

🟠 High   ⏱ 15–60 min  Last verified: 25 May 2026 Affected versions: Windows Server 2016 📖 ~4 min read  •  Source: Microsoft KB5028952 • MSRC update-guide entry Related CVEs: CVE-2023-36873 CVE-2023-36899 Affected components: Microsoft .NET Framework 4.8 on Windows Server 2016 Table of contents Symptom & Impact Environment & Reproduction Root Cause Analysis Quick […]

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IBM AIX 7.3 — CVE-2021-29738 — vulnerability — patch and remediation guide — diagnosis and fix on IBM AIX 7.3

IBM AIX 7.3 — CVE-2021-29738 — vulnerability — patch and remediation guide

🟡 Medium   ⏱ 15–45 min  Last verified: 25 May 2026 Affected versions: IBM AIX 7.3 📖 ~4 min read  •  Source: NVD CVE-2021-29738, IBM Support Bulletin CVE: CVE-2021-29738 NVD summary: IBM InfoSphere Data Flow Designer (IBM InfoSphere Information Server 11.7 ) is vulnerable to server-side request forgery (SSRF). This may allow an authenticated attacker […]

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Common Problems 111673

Windows Server 2022 – DHCP scope exhaustion causing IP allocation failures – Fix & Prevention

🟠 High   ⏱ 5–30 min  Last verified: 29 May 2026 Affected versions: Windows Server 2022 📖 ~1 min read Table of contents Symptom & Impact Environment & Reproduction Root Cause Analysis Quick Triage Step-by-Step Diagnosis Solution – Primary Fix Solution – Alternative Approaches Verification & Acceptance Criteria Rollback Plan Prevention & Hardening Related Errors […]

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IBM AIX 7.3 — CVE-2008-5384 — vulnerability — patch and remediation guide — diagnosis and fix on IBM AIX 7.3

IBM AIX 7.3 — CVE-2008-5384 — vulnerability — patch and remediation guide

🟡 Medium   ⏱ 15–45 min  Last verified: 25 May 2026 Affected versions: IBM AIX 7.3 📖 ~4 min read  •  Source: NVD CVE-2008-5384, IBM Support Bulletin CVE: CVE-2008-5384 NVD summary: crontab in bos.rte.cron in IBM AIX 6.1.0 through 6.1.2 allows local users with aix.system.config.cron authorization to gain privileges by launching an editor. References: aix.software.ibm.com/aix/efixes/security/aix61_a […]

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Debian 11 — jline3 — vulnerability — patch and remediation guide — diagnosis and fix on Debian 11

Debian 11 — jline3 — vulnerability — patch and remediation guide

🟢 Low   ⏱ 5–15 min  Last verified: 25 May 2026 Affected versions: Debian 11 (bullseye) 📖 ~4 min read  •  Source: Debian Security Tracker Related CVEs: CVE-2023-50572 Upstream summary: An issue in the component GroovyEngine.execute of jline-groovy v3.24.1 allows attackers to cause an OOM (OutofMemory) error. Table of contents Symptom & Impact Environment & […]

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How to Use Ansible to Install and Set Up Docker on Ubuntu 18.04 — step-by-step Docker tutorial on Progressive Robot

How to Use Ansible to Install and Set Up Docker on Ubuntu 18.04

Docker is an application that simplifies the process of managing application processes in *containers*. This guide explains how to use Ansible to automate the steps contained in our guide on How To Install and Use Docker on Ubuntu 18.04. Ansible is a modern configuration management tool that can be used to automate the provisioning and configuration of remote systems.

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How to Configure Oracle Linux 9 in Azure — step-by-step Oracle Linux 9 tutorial on Progressive Robot

How to Configure Oracle Linux 9 in Azure

Introduction How to Configure Oracle Linux 9 in Azure on Oracle Linux 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 reproducible […]

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Ubuntu 18.04 — giflib — multiple vulnerabilities (6 CVEs) — patch and remediation guide — diagnosis and fix on Ubuntu 18.04

Ubuntu 18.04 — giflib — multiple vulnerabilities (6 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-6824-1 Related CVEs: CVE-2021-40633 CVE-2022-28506 CVE-2023-39742 CVE-2016-3977 CVE-2018-11490 CVE-2019-15133 Upstream summary: It was discovered that GIFLIB incorrectly handled certain GIF files. An attacker could possibly use this issue to cause […]

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