September 2023 - Page 13 of 73

NetBSD 9.4 — isync — multiple vulnerabilities (4 CVEs) — patch and remediation guide — diagnosis and fix on NetBSD 9.4

NetBSD 9.4 — isync — multiple vulnerabilities (4 CVEs) — patch and remediation guide

🟠 High   ⏱ 15–60 min  Last verified: 25 May 2026 Affected versions: NetBSD 9.4 📖 ~4 min read  •  Source: pkgsrc audit-packages entry Related CVEs: CVE-2021-44143 CVE-2021-3578 CVE-2021-3657 CVE-2021-20247 Upstream summary: pkgsrc audit-packages flagged isync-[0-9]* for vulnerability class 'remote-code-execution'. Reference: https://nvd.nist.gov/vuln/detail/CVE-2021-44143 Table of contents Symptom & Impact Environment & Reproduction Root Cause Analysis Quick […]

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Oracle Linux 9 — Systems With Btrfs Fail to Boot in FIPS Mode — diagnosis and fix on Oracle Linux 9

Oracle Linux 9 — Systems With Btrfs Fail to Boot in FIPS Mode

🟠 High   ⏱ 5–30 min  Last verified: 25 September 2023 Affected versions: Oracle Linux 9 📖 ~4 min read  •  Source: Oracle Bug 36028061 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 […]

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AlmaLinux 9 — subscription-manager — vulnerability — patch and remediation guide — diagnosis and fix on AlmaLinux 9

AlmaLinux 9 — subscription-manager — vulnerability — patch and remediation guide

🟠 High   ⏱ 15–60 min  Last verified: 25 May 2026 Affected versions: AlmaLinux 9 📖 ~4 min read  •  Source: AlmaLinux ALSA ALSA-2023:4708 Related CVEs: CVE-2023-3899 Upstream summary: The subscription-manager packages provide programs and libraries to allow users to manage subscriptions and yum repositories from the AlmaLinux entitlement platform. Security Fix(es): * subscription-manager: inadequate […]

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How to Set Up a Web Application Firewall on CentOS Stream 9 — step-by-step CentOS Stream 9 tutorial on Progressive Robot

How to Set Up a Web Application Firewall on CentOS Stream 9

Introduction Setting up set up a web application firewall on centos stream 9 on a CentOS Stream 9 server is a common task for system administrators, DevOps engineers, and site reliability engineers. This guide explains how to Set Up a Web Application Firewall on CentOS Stream 9, with all the commands you need, the SELinux […]

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NetBSD 9.4 — ytnef — vulnerability — patch and remediation guide — diagnosis and fix on NetBSD 9.4

NetBSD 9.4 — ytnef — vulnerability — patch and remediation guide

🟢 Low   ⏱ 5–15 min  Last verified: 25 May 2026 Affected versions: NetBSD 9.4 📖 ~4 min read  •  Source: pkgsrc audit-packages entry Related CVEs: CVE-2017-6801 Upstream summary: pkgsrc audit-packages flagged ytnef<1.9.2 for vulnerability class 'denial-of-service'. Reference: https://web.nvd.nist.gov/view/vuln/detail?vulnId=CVE-2017-6801 Table of contents Symptom & Impact Environment & Reproduction Root Cause Analysis Quick Triage Step-by-Step Diagnosis […]

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Common Problems 119954

Debian 12 APT Lock Contention During Package Operations

🟡 Medium   ⏱ 5–30 min  Last verified: 25 September 2023 Affected versions: Debian 12 📖 ~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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NetBSD 9.4 — durupal — vulnerability — patch and remediation guide — diagnosis and fix on NetBSD 9.4

NetBSD 9.4 — durupal — vulnerability — patch and remediation guide

🟢 Low   ⏱ 5–15 min  Last verified: 25 May 2026 Affected versions: NetBSD 9.4 📖 ~4 min read  •  Source: pkgsrc audit-packages entry Upstream summary: pkgsrc audit-packages flagged durupal>=6<6.33 for vulnerability class 'denial-of-service'. Reference: https://www.drupal.org/SA-CORE-2014-004 Table of contents Symptom & Impact Environment & Reproduction Root Cause Analysis Quick Triage Step-by-Step Diagnosis Solution – Primary […]

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Common Problems 117038

Ubuntu 22.04 LTS – UFW blocks application traffic unexpectedly – Fix & Prevention

🟠 High   ⏱ 5–30 min  Last verified: 25 September 2023 Affected versions: Ubuntu 22.04 LTS (Jammy) 📖 ~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 […]

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NetBSD 9.4 — ruby193-rest-client — vulnerability — patch and remediation guide — diagnosis and fix on NetBSD 9.4

NetBSD 9.4 — ruby193-rest-client — vulnerability — patch and remediation guide

🟡 Medium   ⏱ 10–30 min  Last verified: 25 May 2026 Affected versions: NetBSD 9.4 📖 ~4 min read  •  Source: pkgsrc audit-packages entry Upstream summary: pkgsrc audit-packages flagged ruby193-rest-client<1.7.3 for vulnerability class 'sensitive-information-exposure'. Reference: https://github.com/rest-client/rest-client/issues/349 Table of contents Symptom & Impact Environment & Reproduction Root Cause Analysis Quick Triage Step-by-Step Diagnosis Solution – Primary […]

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Windows Server 2022 — KB5022734 — multiple vulnerabilities (2 CVEs) — patch and remediation guide — diagnosis and fix on Windows Server 2022

Windows Server 2022 — KB5022734 — multiple vulnerabilities (2 CVEs) — patch and remediation guide

🔴 Critical   ⏱ 15–90 min  Last verified: 25 May 2026 Affected versions: Windows Server 2022 📖 ~4 min read  •  Source: Microsoft KB5022734 • MSRC update-guide entry Related CVEs: CVE-2023-21808 CVE-2023-21722 Affected components: Microsoft .NET Framework 3.5 AND 4.8 on Windows Server 2022 Table of contents Symptom & Impact Environment & Reproduction Root Cause […]

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