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Common Problems 114415

RHEL 9: systemctl Service Fails to Start After Update

🟡 Medium   ⏱ 5–30 min  Last verified: 24 April 2023 đź“– ~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 & Cross-Refs References & Further […]

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Common Problems 111703

Windows Server 2022 – Windows Defender Firewall blocks line-of-business app ports – Fix & Prevention

đźź  High   ⏱ 5–30 min  Last verified: 24 April 2023 Affected versions: Windows Server 2022 đź“– ~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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openSUSE Tumbleweed — jsoup — vulnerability — patch and remediation guide — diagnosis and fix on openSUSE Tumbleweed

openSUSE Tumbleweed — jsoup — vulnerability — patch and remediation guide

🟡 Medium   ⏱ 10–30 min  Last verified: 25 May 2026 Affected versions: openSUSE Tumbleweed đź“– ~4 min read  â€˘  Source: SUSE advisory SUSE-CU-2022:3027-1 (see also SUSE bugzilla) Related CVEs: CVE-2022-36033 Upstream summary: jsoup is a Java HTML parser, built for HTML editing, cleaning, scraping, and cross-site scripting (XSS) safety. jsoup may incorrectly sanitize HTML […]

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IBM AIX 7.3 — CVE-2023-45167 — denial of service — patch and remediation guide — diagnosis and fix on IBM AIX 7.3

IBM AIX 7.3 — CVE-2023-45167 — denial of service — patch and remediation guide

🟡 Medium   ⏱ 15–45 min  Last verified: 24 April 2023 Affected versions: IBM AIX 7.3 Affected: 7.3 đź“– ~4 min read  â€˘  Source: NVD CVE-2023-45167, IBM Support Bulletin CVE: CVE-2023-45167 NVD summary: IBM AIX's 7.3 Python implementation could allow a non-privileged local user to exploit a vulnerability to cause a denial of service. IBM […]

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Windows Server 2022 — KB5023754 — multiple vulnerabilities (16 CVEs) — patch and remediation guide — diagnosis and fix on Windows Server 2022

Windows Server 2022 — KB5023754 — multiple vulnerabilities (16 CVEs) — patch and remediation guide

đź”´ Critical   ⏱ 15–90 min  Last verified: 25 May 2026 Affected versions: Windows Server 2022 đź“– ~4 min read  â€˘  Source: Microsoft KB5023754 • MSRC update-guide entry Related CVEs: CVE-2023-21708 CVE-2023-23415 CVE-2023-23385 CVE-2023-23394 CVE-2023-23405 CVE-2023-23409 CVE-2023-23410 CVE-2023-23420  +8 more Affected components: Windows Server 2022 Table of contents Symptom & Impact Environment & Reproduction Root […]

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How to Deploy a Symfony Application on Oracle Linux 9 — step-by-step Oracle Linux 9 tutorial on Progressive Robot

How to Deploy a Symfony Application on Oracle Linux 9

Introduction This tutorial demonstrates how to Deploy a Symfony Application on Oracle Linux 9 on Oracle Linux 9. It is written for administrators who want a repeatable, well-explained walkthrough that goes beyond a bare command list and explains each configuration choice. Every command is tested against a freshly registered Oracle Linux 9 system with the […]

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Ubuntu 16.04 — pdns — multiple vulnerabilities (6 CVEs) — patch and remediation guide — diagnosis and fix on Ubuntu 16.04

Ubuntu 16.04 — pdns — multiple vulnerabilities (6 CVEs) — patch and remediation guide

🟡 Medium   ⏱ 10–30 min  Last verified: 24 April 2023 Affected versions: Ubuntu 16.04 (xenial) đź“– ~4 min read  â€˘  Source: Ubuntu Security Notice USN-7203-1 Related CVEs: CVE-2018-1046 CVE-2018-10851 CVE-2018-14626 CVE-2018-14644 CVE-2020-17482 CVE-2022-27227 Upstream summary: Wei Hao discovered that PowerDNS Authoritative Server incorrectly handled memory when accessing certain files. An attacker could possibly use […]

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Windows Server 2022 — KB5030216 — multiple vulnerabilities (19 CVEs) — patch and remediation guide — diagnosis and fix on Windows Server 2022

Windows Server 2022 — KB5030216 — multiple vulnerabilities (19 CVEs) — patch and remediation guide

đź”´ Critical   ⏱ 15–90 min  Last verified: 25 May 2026 Affected versions: Windows Server 2022 đź“– ~4 min read  â€˘  Source: Microsoft KB5030216 • MSRC update-guide entry Related CVEs: CVE-2023-38148 CVE-2023-35355 CVE-2023-38162 CVE-2023-38161 CVE-2023-38152 CVE-2023-38149 CVE-2023-38147 CVE-2023-38144  +11 more Affected components: Windows Server 2022 Windows Server 2022 (Server Core installation) Table of contents Symptom […]

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Spring @PostConstruct and @PreDestroy — step-by-step DevOps tutorial on Progressive Robot

Spring @PostConstruct and @PreDestroy

URL: https://www.progressiverobot.com/spring-postconstruct-predestroy/ When we configure [Spring Beans](/community/tutorials/spring-ioc-bean-example-tutorial) using [dependency injection](/community/tutorials/spring-dependency-injection), sometimes we want to make sure everything is initialized properly before our bean starts serving the client requests. Similarly, when the context is destroyed, we may have to close some resources used by spring bean. Spring @PostConstruct When we annotate a method in Spring Bean […]

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