Operations

openSUSE Leap 15.5 — jupyter-notebook — multiple vulnerabilities (2 CVEs) — patch and remediation guide — diagnosis and fix on openSUSE Leap 15.5

openSUSE Leap 15.5 — jupyter-notebook — multiple vulnerabilities (2 CVEs) — patch and remediation guide

🔴 Critical   ⏱ 15–90 min  Last verified: 25 May 2026 Affected versions: openSUSE Leap 15.5 📖 ~4 min read  •  Source: SUSE advisory openSUSE-SU-2024:0231-1 (see also SUSE bugzilla) Related CVEs: CVE-2021-32798 CVE-2019-11358 Upstream summary: The Jupyter notebook is a web-based notebook environment for interactive computing. In affected versions untrusted notebook can execute code on […]

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How to Set Up DFS Replication for File Server Redundancy on Windows Server 2022 — step-by-step Windows Server 2022 tutorial on Progressive Robot

How to Set Up DFS Replication for File Server Redundancy on Windows Server 2022

How to Set Up DFS Replication for File Server Redundancy on Windows Server 2022 Distributed File System (DFS) on Windows Server 2022 provides two complementary but distinct technologies: DFS Namespaces (DFS-N) for creating a unified virtual namespace across multiple file servers, and DFS Replication (DFS-R) for synchronizing folder content between servers using a compression algorithm […]

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Oracle Linux 9 — dnsmasq — security and stability fixes — required update — diagnosis and fix on Oracle Linux 9

Oracle Linux 9 — dnsmasq — security and stability fixes — required update (ELSA-2023-6524)

🟡 Medium   ⏱ 10–30 min  Last verified: 8 August 2023 Affected versions: Oracle Linux 9 📖 ~4 min read  •  Source: ELSA advisory ELSA-2023-6524 Related CVEs: CVE-2023-28450 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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Common Problems 120026

Debian 12 DNS Resolution Flaps with systemd-resolved

🟡 Medium   ⏱ 5–30 min  Last verified: 8 August 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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How to Set Up ModSecurity WAF on Oracle Linux 9 — step-by-step Oracle Linux 9 tutorial on Progressive Robot

How to Set Up ModSecurity WAF on Oracle Linux 9

Introduction Setting up set up modsecurity waf on oracle linux 9 on a Oracle Linux 9 server is a common task for system administrators, DevOps engineers, and site reliability engineers. This guide explains how to Set Up ModSecurity WAF on Oracle Linux 9, with all the commands you need, the SELinux and firewalld considerations to […]

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NetBSD 9.4 — p5-razor-agents — vulnerability — patch and remediation guide — diagnosis and fix on NetBSD 9.4

NetBSD 9.4 — p5-razor-agents — 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 p5-razor-agents<2.72 for vulnerability class 'denial-of-service'. Reference: http://secunia.com/advisories/15739/ Table of contents Symptom & Impact Environment & Reproduction Root Cause Analysis Quick Triage Step-by-Step Diagnosis Solution – Primary […]

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IBM AIX 7.2 — CVE-2023-24964 — vulnerability — patch and remediation guide — diagnosis and fix on IBM AIX 7.2

IBM AIX 7.2 — CVE-2023-24964 — vulnerability — patch and remediation guide

🟡 Medium   ⏱ 15–45 min  Last verified: 8 August 2023 Affected versions: IBM AIX 7.2 📖 ~4 min read  •  Source: NVD CVE-2023-24964, IBM Support Bulletin CVE: CVE-2023-24964 NVD summary: IBM InfoSphere Information Server 11.7 could allow a local user to obtain sensitive information from a log files. IBM X-Force ID: 246463. References: exchange.xforce.ibmcloud.com/vulnerabilities/246 […]

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Windows Server 2022 — KB5022834 — multiple vulnerabilities (20 CVEs) — patch and remediation guide — diagnosis and fix on Windows Server 2022

Windows Server 2022 — KB5022834 — multiple vulnerabilities (20 CVEs) — patch and remediation guide

🔴 Critical   ⏱ 15–90 min  Last verified: 25 May 2026 Affected versions: Windows Server 2022 📖 ~4 min read  •  Source: Microsoft KB5022834 • MSRC update-guide entry Related CVEs: CVE-2023-21689 CVE-2023-21690 CVE-2023-21692 CVE-2023-21684 CVE-2023-21701 CVE-2023-21797 CVE-2023-21798 CVE-2023-21799  +12 more Affected components: Windows Server 2022 Windows Server 2022 (Server Core installation) Table of contents Symptom […]

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