Security Hardening

Common Problems 112960

Windows Server 2016 — Unsigned boot driver blocked after policy hardening — Fix & Prevention

🟠 High   ⏱ 5–30 min  Last verified: 10 August 2025 Affected versions: Windows Server 2016 📖 ~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 10.0 — moodle — multiple vulnerabilities (20 CVEs) — patch and remediation guide — diagnosis and fix on NetBSD 10.0

NetBSD 10.0 — moodle — multiple vulnerabilities (20 CVEs) — patch and remediation guide

🟠 High   ⏱ 15–60 min  Last verified: 25 May 2026 Affected versions: NetBSD 10.0 📖 ~4 min read  •  Source: pkgsrc audit-packages entry Related CVEs: CVE-2016-0725 CVE-2016-9186 CVE-2016-9187 CVE-2018-1133 CVE-2018-14630 CVE-2020-10738 CVE-2021-3943 CVE-2022-40314  +12 more Upstream summary: pkgsrc audit-packages flagged moodle>=3.0<3.0.2 for vulnerability class 'arbitrary-code-execution'. Reference: https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2016-0725 Table of contents Symptom & Impact Environment […]

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AlmaLinux 8 — perl-IO-Compress-Lzma — multiple vulnerabilities (2 CVEs) — patch and remediation guide — diagnosis and fix on AlmaLinux 8

AlmaLinux 8 — perl-IO-Compress-Lzma — multiple vulnerabilities (2 CVEs) — patch and remediation guide

🟡 Medium   ⏱ 10–30 min  Last verified: 25 May 2026 Affected versions: AlmaLinux 8 📖 ~4 min read  •  Source: AlmaLinux ALSA ALSA-2026:8096 Related CVEs: CVE-2025-40909 CVE-2023-47038 Upstream summary: Perl is a high-level programming language that is commonly used for system administration utilities and web programming. Security Fix(es): * perl: Perl threads have a […]

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How to Configure DKIM and SPF on Oracle Linux 10 — step-by-step Oracle Linux 10 tutorial on Progressive Robot

How to Configure DKIM and SPF on Oracle Linux 10

Introduction Setting up configure dkim and spf on oracle linux 10 on a Oracle Linux 10 server is a common task for system administrators, DevOps engineers, and site reliability engineers. This guide explains how to Configure DKIM and SPF on Oracle Linux 10, with all the commands you need, the SELinux and firewalld considerations to […]

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FreeBSD 14 — step-certificates — vulnerability — patch and remediation guide — diagnosis and fix on FreeBSD 14

FreeBSD 14 — step-certificates — vulnerability — patch and remediation guide

🟢 Low   ⏱ 5–15 min  Last verified: 10 August 2025 Affected versions: FreeBSD 14 📖 ~4 min read  •  Source: FreeBSD VuXML VuXML topic: step-certificates — Authorization Bypass in ACME and SCEP Provisioners Related CVEs: CVE-2025-44005 Upstream summary: smallstep reports: An attacker can bypass authorization checks and force a Step CA ACME or SCEP […]

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Common Problems 111238

Windows Server 2025 — DNS conditional forwarder not resolving external partner domains on Server 2025 — Fix & Prevention

🟡 Medium   ⏱ 5–30 min  Last verified: 10 August 2025 Affected versions: Windows Server 2025 📖 ~2 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 2022 — KB5071547 — multiple vulnerabilities (20 CVEs) — patch and remediation guide — diagnosis and fix on Windows Server 2022

Windows Server 2022 — KB5071547 — multiple vulnerabilities (20 CVEs) — patch and remediation guide

🟠 High   ⏱ 15–60 min  Last verified: 25 May 2026 Affected versions: Windows Server 2022 📖 ~4 min read  •  Source: Microsoft KB5071547 • MSRC update-guide entry Related CVEs: CVE-2025-62454 CVE-2025-62456 CVE-2025-62457 CVE-2025-62458 CVE-2025-62466 CVE-2025-62470 CVE-2025-62472 CVE-2025-62473  +12 more Affected components: Windows Server 2022 Windows Server 2022, 23H2 Edition (Server Core installation) Microsoft summary: […]

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How to Set Up Mail Relay with Postfix on RHEL 10 — step-by-step RHEL 10 tutorial on Progressive Robot

How to Set Up Mail Relay with Postfix on RHEL 10

Introduction Setting up set up mail relay with postfix on a RHEL 10 server is a common task for system administrators, DevOps engineers, and site reliability engineers. This guide explains how to Set Up Mail Relay with Postfix on RHEL 10, with all the commands you need, the SELinux and firewalld considerations to keep in […]

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FreeBSD 13 — linux_base-rl — multiple vulnerabilities (2 CVEs) — patch and remediation guide — diagnosis and fix on FreeBSD 13

FreeBSD 13 — linux_base-rl — multiple vulnerabilities (2 CVEs) — patch and remediation guide

🟢 Low   ⏱ 5–15 min  Last verified: 10 August 2025 Affected versions: FreeBSD 13 📖 ~4 min read  •  Source: FreeBSD VuXML VuXML topic: sqlite — integer overflow Related CVEs: CVE-2025-3277 CVE-2025-6965 Upstream summary: [email protected] reports: An integer overflow can be triggered in SQLites `concat_ws()` function. The resulting, truncated integer is then used to […]

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Amazon Linux 2 — kernel-livepatch-5.10.233-224.894 — multiple vulnerabilities (5 CVEs) — patch and remediation guide — diagnosis and fix on Amazon Linux 2

Amazon Linux 2 — kernel-livepatch-5.10.233-224.894 — multiple vulnerabilities (5 CVEs) — patch and remediation guide

🟠 High   ⏱ 15–60 min  Last verified: 25 May 2026 Affected versions: Amazon Linux 2 📖 ~4 min read  •  Source: Amazon Linux advisory ALAS2LIVEPATCH-2025-223 Related CVEs: CVE-2025-21703 CVE-2025-21796 CVE-2025-21647 CVE-2025-21702 CVE-2024-56631 Upstream summary: In the Linux kernel, the following vulnerability has been resolved: netem: Update sch->q.qlen before qdisc_tree_reduce_backlog() (CVE-2025-21703) Table of contents Symptom […]

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