Security Hardening

Amazon Linux 2023 — perl-JSON-XS — vulnerability — patch and remediation guide — diagnosis and fix on Amazon Linux 2023

Amazon Linux 2023 — perl-JSON-XS — vulnerability — patch and remediation guide

🟡 Medium   ⏱ 10–30 min  Last verified: 25 May 2026 Affected versions: Amazon Linux 2023 📖 ~4 min read  •  Source: Amazon Linux advisory ALAS2023-2025-1200 Related CVEs: CVE-2025-40928 Upstream summary: JSON::XS before version 4.04 for Perl has an integer buffer overflow causing a segfault when parsing crafted JSON, enabling denial-of-service attacks or other unspecified […]

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FreeBSD 13 — c-ares — multiple vulnerabilities (4 CVEs) — patch and remediation guide — diagnosis and fix on FreeBSD 13

FreeBSD 13 — c-ares — multiple vulnerabilities (4 CVEs) — patch and remediation guide

🟡 Medium   ⏱ 10–30 min  Last verified: 18 June 2026 Affected versions: FreeBSD 13 📖 ~4 min read  •  Source: FreeBSD VuXML VuXML topic: c-ares — Use After Free Related CVEs: CVE-2007-3152 CVE-2007-3153 CVE-2024-25629 CVE-2025-62408 Upstream summary: https://github.com/c-ares/c-ares/security/advisories/GHSA-jq53-42q6-pqr5 reports: c-ares is an asynchronous resolver library. Versions 1.32.3 through 1.34.5 terminate a query after maximum […]

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Amazon Linux 2023 — ecs-init — multiple vulnerabilities (20 CVEs) — patch and remediation guide — diagnosis and fix on Amazon Linux 2023

Amazon Linux 2023 — ecs-init — multiple vulnerabilities (20 CVEs) — patch and remediation guide

🟠 High   ⏱ 15–60 min  Last verified: 25 May 2026 Affected versions: Amazon Linux 2023 📖 ~4 min read  •  Source: Amazon Linux advisory ALAS2023-2026-1552 Related CVEs: CVE-2026-25679 CVE-2026-27139 CVE-2026-27142 CVE-2026-33186 CVE-2025-65637 CVE-2025-47912 CVE-2025-58183 CVE-2025-58185  +12 more Upstream summary: url.Parse insufficiently validated the host/authority component and accepted some invalid URLs. (CVE-2026-25679) On Unix platforms, […]

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How to Set Up VLAN Tagging on FreeBSD 15 — step-by-step FreeBSD 15 tutorial on Progressive Robot

How to Set Up VLAN Tagging on FreeBSD 15

Introduction How to Set Up VLAN Tagging on FreeBSD 15 is a core administration task for any FreeBSD 15 server operator. FreeBSD 15 ships with the 15.0-RELEASE kernel, ZFS as the default root filesystem, Capsicum capability sandboxing improvements, and an updated ports tree. Unlike Linux distributions, FreeBSD uses rc(8) for service management, pf for packet […]

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Windows Server 2022 — KB5050182 — security update — patch and remediation guide — diagnosis and fix on Windows Server 2022

Windows Server 2022 — KB5050182 — security update — patch and remediation guide

🟠 High   ⏱ 15–60 min  Last verified: 25 May 2026 Affected versions: Windows Server 2022 📖 ~4 min read  •  Source: Microsoft KB5050182 • MSRC update-guide entry Related CVEs: CVE-2025-21176 Affected components: Microsoft .NET Framework 3.5 AND 4.8.1 on Windows Server 2022, 23H2 Edition (Server Core installation) Table of contents Symptom & Impact Environment […]

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FreeBSD 15 — elinks — vulnerability — patch and remediation guide — diagnosis and fix on FreeBSD 15

FreeBSD 15 — elinks — vulnerability — patch and remediation guide

🟢 Low   ⏱ 5–15 min  Last verified: 18 June 2026 Affected versions: FreeBSD 15 📖 ~4 min read  •  Source: FreeBSD VuXML VuXML topic: elinks — buffer overflow vulnerability Related CVEs: CVE-2008-7224 Upstream summary: SecurityFocus reports: ELinks is prone to an off-by-one buffer-overflow vulnerability because the application fails to accurately reference the last element […]

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FreeBSD 15 — isc-dhcp44-server — multiple vulnerabilities (3 CVEs) — patch and remediation guide — diagnosis and fix on FreeBSD 15

FreeBSD 15 — isc-dhcp44-server — multiple vulnerabilities (3 CVEs) — patch and remediation guide

🟡 Medium   ⏱ 10–30 min  Last verified: 18 June 2026 Affected versions: FreeBSD 15 📖 ~4 min read  •  Source: FreeBSD VuXML VuXML topic: isc-dhcp — remotely exploitable vulnerability Related CVEs: CVE-2018-5732 CVE-2018-5733 CVE-2021-25217 Upstream summary: Michael McNally reports: Program code used by the ISC DHCP package to read and parse stored leases has […]

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Amazon Linux 2023 — perl-CryptX — multiple vulnerabilities (3 CVEs) — patch and remediation guide — diagnosis and fix on Amazon Linux 2023

Amazon Linux 2023 — perl-CryptX — multiple vulnerabilities (3 CVEs) — patch and remediation guide

🟠 High   ⏱ 15–60 min  Last verified: 25 May 2026 Affected versions: Amazon Linux 2023 📖 ~4 min read  •  Source: Amazon Linux advisory ALAS2023-2026-1641 Related CVEs: CVE-2026-41564 CVE-2023-36328 CVE-2025-40914 Upstream summary: NOTE: https://lists.security.metacpan.org/cve-announce/msg/39209500/ NOTE: https://github.com/DCIT/perl-CryptX/security/advisories/GHSA-24c2-gp6c-24c6 NOTE: Fixed by: https://github.com/DCIT/perl-CryptX/commit/9a1dd3e0c27d68e32450be5538b864c2b115ee15 (v0.088) (CVE-2026-41564) Table of contents Symptom & Impact Environment & Reproduction Root Cause Analysis […]

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