Security Hardening

Debian 11 — usbmuxd — multiple vulnerabilities (2 CVEs) — patch and remediation guide — diagnosis and fix on Debian 11

Debian 11 — usbmuxd — multiple vulnerabilities (2 CVEs) — patch and remediation guide

🟢 Low   ⏱ 5–15 min  Last verified: 8 October 2025 Affected versions: Debian 11 (bullseye) 📖 ~4 min read  •  Source: Debian Security Tracker Related CVEs: CVE-2012-0065 CVE-2025-66004 Upstream summary: Heap-based buffer overflow in the receive_packet function in libusbmuxd/libusbmuxd.c in usbmuxd 1.0.5 through 1.0.7 allows physically proximate attackers to execute arbitrary code via a […]

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Windows Server 2019 — KB5049622 — security update — patch and remediation guide — diagnosis and fix on Windows Server 2019

Windows Server 2019 — KB5049622 — security update — patch and remediation guide

🟠 High   ⏱ 15–60 min  Last verified: 25 May 2026 Affected versions: Windows Server 2019 📖 ~4 min read  •  Source: Microsoft KB5049622 • MSRC update-guide entry Related CVEs: CVE-2025-21176 Affected components: Microsoft .NET Framework 3.5 AND 4.8 on Windows Server 2019 Table of contents Symptom & Impact Environment & Reproduction Root Cause Analysis […]

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Oracle Linux 10 — vim — vulnerability — patch and remediation guide — diagnosis and fix on Oracle Linux 10

Oracle Linux 10 — vim — vulnerability — patch and remediation guide (ELSA-2025-21015)

🟡 Medium   ⏱ 10–30 min  Last verified: 8 October 2025 Affected versions: Oracle Linux 10 📖 ~4 min read  •  Source: ELSA advisory ELSA-2025-21015 Related CVEs: CVE-2025-53905 CVE-2025-53906 Table of contents Symptom & Impact Environment & Reproduction Root Cause Analysis Quick Triage Step-by-Step Diagnosis Solution – Primary Fix Solution – Alternative Approaches Verification & […]

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How to Install Maven on Debian 13 — step-by-step Debian 13 tutorial on Progressive Robot

How to Install Maven on Debian 13

Introduction How to Install Maven on Debian 13 is a fundamental operation for any administrator maintaining a Debian 13 Trixie server. Debian 13 Trixie ships with the Linux 6.12 kernel, updated toolchains, and a fully refreshed package archive — meaning version numbers, configuration file paths, and some dependency chains differ from Debian 12. This tutorial […]

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Oracle Linux 8 — libssh — vulnerability — patch and remediation guide — diagnosis and fix on Oracle Linux 8

Oracle Linux 8 — libssh — vulnerability — patch and remediation guide (ELSA-2025-21977)

🟡 Medium   ⏱ 10–30 min  Last verified: 8 October 2025 Affected versions: Oracle Linux 8 📖 ~4 min read  •  Source: ELSA advisory ELSA-2025-21977 Related CVEs: CVE-2025-5372 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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Windows Server 2019 — KB5066875 — multiple vulnerabilities (20 CVEs) — patch and remediation guide — diagnosis and fix on Windows Server 2019

Windows Server 2019 — KB5066875 — multiple vulnerabilities (20 CVEs) — patch and remediation guide

🔴 Critical   ⏱ 15–90 min  Last verified: 25 May 2026 Affected versions: Windows Server 2019 📖 ~4 min read  •  Source: Microsoft KB5066875 • MSRC update-guide entry Related CVEs: CVE-2016-9535 CVE-2025-24990 CVE-2025-24052 CVE-2025-55335 CVE-2025-55687 CVE-2025-55700 CVE-2025-55701 CVE-2025-58717  +12 more Affected components: Windows Server 2019 (Server Core installation) Microsoft summary: tif_predict.h and tif_predict.c in libtiff […]

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How to Configure PostgreSQL Streaming Replication on Debian 13 — step-by-step Debian 13 tutorial on Progressive Robot

How to Configure PostgreSQL Streaming Replication on Debian 13

Introduction How to Configure PostgreSQL Streaming Replication on Debian 13 is a fundamental operation for any administrator maintaining a Debian 13 Trixie server. Debian 13 Trixie ships with the Linux 6.12 kernel, updated toolchains, and a fully refreshed package archive — meaning version numbers, configuration file paths, and some dependency chains differ from Debian 12. […]

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SLES 15 — gnuplot — multiple vulnerabilities (14 CVEs) — patch and remediation guide — diagnosis and fix on SLES 15

SLES 15 — gnuplot — multiple vulnerabilities (14 CVEs) — patch and remediation guide

🔴 Critical   ⏱ 15–90 min  Last verified: 8 October 2025 Affected versions: SLES 15 📖 ~4 min read  •  Source: SUSE security advisory (see also SUSE bugzilla) Related CVEs: CVE-2020-25412 CVE-2025-31176 CVE-2025-31177 CVE-2025-31178 CVE-2025-31179 CVE-2025-31180 CVE-2025-31181 CVE-2025-3359  +6 more Upstream summary: com_line() in command.c in gnuplot 5.4 leads to an out-of-bounds-write from strncpy() that […]

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How to Set Up Port Knocking on Oracle Linux 10 — step-by-step Oracle Linux 10 tutorial on Progressive Robot

How to Set Up Port Knocking on Oracle Linux 10

Introduction Setting up set up port knocking 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 Set Up Port Knocking on Oracle Linux 10, with all the commands you need, the SELinux and firewalld considerations to […]

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How to Install ArgoCD on Oracle Linux 10 — step-by-step Oracle Linux 10 tutorial on Progressive Robot

How to Install ArgoCD on Oracle Linux 10

Introduction This tutorial demonstrates how to Install ArgoCD on Oracle Linux 10 on Oracle Linux 10. 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 10 system with the default AppStream […]

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