Security Hardening

NetBSD 10.0 — apache-tomcat-8.0.[0-9]* — vulnerability — patch and remediation guide — diagnosis and fix on NetBSD 10.0

NetBSD 10.0 — apache-tomcat — vulnerability — patch and remediation guide

  • July 29, 2025
  • BSD
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🟡 Medium   ⏱ 10–30 min  Last verified: 25 May 2026 Affected versions: NetBSD 10.0 📖 ~4 min read  •  Source: pkgsrc audit-packages entry Upstream summary: pkgsrc audit-packages flagged apache-tomcat for vulnerability class 'eol'. Reference: https://ftp.NetBSD.org/pub/NetBSD/packages/vulns/eol-packages Table of contents Symptom & Impact Environment & Reproduction Root Cause Analysis Quick Triage Step-by-Step Diagnosis Solution – Primary […]

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Common Problems 123973

Oracle Linux 10 – dnf fails with SSL certificate verification error against repo mirror – Fix & Prevention

  • July 29, 2025
  • Linux
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🟠 High   ⏱ 5–30 min  Last verified: 29 July 2025 Affected versions: Oracle Linux 10 📖 ~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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FreeBSD 12 — erlang — multiple vulnerabilities (3 CVEs) — patch and remediation guide — diagnosis and fix on FreeBSD 12

FreeBSD 12 — erlang — multiple vulnerabilities (3 CVEs) — patch and remediation guide

  • July 29, 2025
  • BSD
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🟡 Medium   ⏱ 10–30 min  Last verified: 29 July 2025 Affected versions: FreeBSD 12 📖 ~4 min read  •  Source: FreeBSD VuXML VuXML topic: Erlang – Absolute Path in Zip Module Related CVEs: CVE-2011-0766 CVE-2025-32433 CVE-2025-4748 Upstream summary: https://github.com/erlang/otp/security/advisories/GHSA-9g37-pgj9-wrhc reports: Improper Limitation of a Pathname to a Restricted Directory ('Path Traversal') vulnerability in Erlang […]

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NetBSD 10.0 — sqlite — multiple vulnerabilities (3 CVEs) — patch and remediation guide — diagnosis and fix on NetBSD 10.0

NetBSD 10.0 — sqlite — multiple vulnerabilities (3 CVEs) — patch and remediation guide

  • July 29, 2025
  • BSD
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🟠 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-2020-13630 CVE-2020-13631 CVE-2020-13632 Upstream summary: pkgsrc audit-packages flagged sqlite<3.32.0 for vulnerability class 'use-after-free'. Reference: https://nvd.nist.gov/vuln/detail/CVE-2020-13630 Table of contents Symptom & Impact Environment & Reproduction Root Cause Analysis Quick Triage […]

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AlmaLinux 10 — libssh — multiple vulnerabilities (2 CVEs) — patch and remediation guide — diagnosis and fix on AlmaLinux 10

AlmaLinux 10 — libssh — multiple vulnerabilities (2 CVEs) — patch and remediation guide

  • July 29, 2025
  • Linux
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🟡 Medium   ⏱ 10–30 min  Last verified: 25 May 2026 Affected versions: AlmaLinux 10 📖 ~4 min read  •  Source: AlmaLinux ALSA ALSA-2025:23484 Related CVEs: CVE-2025-5987 CVE-2025-5318 Upstream summary: libssh is a library which implements the SSH protocol. It can be used to implement client and server applications. Security Fix(es): * libssh: Invalid return […]

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Ubuntu 24.04 — opencc — vulnerability — patch and remediation guide — diagnosis and fix on Ubuntu 24.04

Ubuntu 24.04 — opencc — vulnerability — patch and remediation guide

  • July 29, 2025
  • Linux
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🟢 Low   ⏱ 5–15 min  Last verified: 29 July 2025 Affected versions: Ubuntu 24.04 (noble) 📖 ~4 min read  •  Source: Ubuntu Security Notice USN-7972-1 Related CVEs: CVE-2025-15536 Upstream summary: It was discovered that OpenCC incorrectly handled truncated UTF-8 input. An attacker could possibly use this issue to cause OpenCC to crash, resulting in […]

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How to Install Icinga 2 on RHEL 10 — step-by-step RHEL 10 tutorial on Progressive Robot

How to Install Icinga 2 on RHEL 10

  • July 29, 2025
  • Linux
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Introduction RHEL 10 ships with a stable, security-hardened base that makes deploying install icinga 2 both straightforward and auditable. This tutorial covers the complete procedure for how to Install Icinga 2 on RHEL 10, including dnf module streams where applicable, systemd unit management, and the firewalld rules required for network-facing services. Prerequisites You will need: […]

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Ubuntu 24.04 — node-katex — multiple vulnerabilities (4 CVEs) — patch and remediation guide — diagnosis and fix on Ubuntu 24.04

Ubuntu 24.04 — node-katex — multiple vulnerabilities (4 CVEs) — patch and remediation guide

  • July 29, 2025
  • Linux
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🟡 Medium   ⏱ 10–30 min  Last verified: 29 July 2025 Affected versions: Ubuntu 24.04 (noble) 📖 ~4 min read  •  Source: Ubuntu Security Notice USN-7572-1 Related CVEs: CVE-2024-28246 CVE-2024-28245 CVE-2025-23207 CVE-2024-28243 Upstream summary: Juho Forsén discovered that KaTeX did not correctly handle certain inputs, which could lead to an infinite loop. If a user […]

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Windows Server 2019 — KB5068332 — security update — patch and remediation guide — diagnosis and fix on Windows Server 2019

Windows Server 2019 — KB5068332 — 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 KB5068332 • MSRC update-guide entry Related CVEs: CVE-2025-55248 Affected components: Microsoft .NET Framework 3.5 AND 4.7.2 on Windows Server 2019 Microsoft summary: Inadequate encryption strength in .NET.NET Framework, Visual Studio allows an […]

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How to Secure Nginx with Let's Encrypt on Oracle Linux 10 — step-by-step Oracle Linux 10 tutorial on Progressive Robot

How to Secure Nginx with Let’s Encrypt on Oracle Linux 10

Introduction Setting up secure nginx with let’s encrypt 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 Secure Nginx with Let’s Encrypt on Oracle Linux 10, with all the commands you need, the SELinux and firewalld […]

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