Security Hardening

NetBSD 10.0 — libwebsockets — multiple vulnerabilities (4 CVEs) — patch and remediation guide — diagnosis and fix on NetBSD 10.0

NetBSD 10.0 — libwebsockets — multiple vulnerabilities (4 CVEs) — patch and remediation guide

  • September 6, 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-2025-11677 CVE-2025-11678 CVE-2025-11679 CVE-2025-11680 Upstream summary: pkgsrc audit-packages flagged libwebsockets<4.3.7 for vulnerability class 'use-after-free'. Reference: https://nvd.nist.gov/vuln/detail/CVE-2025-11677 Table of contents Symptom & Impact Environment & Reproduction Root Cause Analysis Quick […]

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Debian 13 — tomb — vulnerability — patch and remediation guide — diagnosis and fix on Debian 13

Debian 13 — tomb — vulnerability — patch and remediation guide

  • September 6, 2025
  • Linux
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🟢 Low   ⏱ 5–15 min  Last verified: 6 September 2025 Affected versions: Debian 13 📖 ~4 min read  •  Source: Debian Security Tracker Related CVEs: CVE-2020-28638 Upstream summary: ask_password in Tomb 2.0 through 2.7 returns a warning when pinentry-curses is used and $DISPLAY is non-empty, causing affected users' files to be encrypted with "tomb […]

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How to Join Debian 13 to an Active Directory Domain — step-by-step Debian 13 tutorial on Progressive Robot

How to Join Debian 13 to an Active Directory Domain

  • September 6, 2025
  • Linux
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Introduction How to Join Debian 13 to an Active Directory Domain 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 […]

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AlmaLinux 8 — assertj-core — multiple vulnerabilities (2 CVEs) — patch and remediation guide — diagnosis and fix on AlmaLinux 8

AlmaLinux 8 — assertj-core — multiple vulnerabilities (2 CVEs) — patch and remediation guide

  • September 6, 2025
  • Linux
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🟠 High   ⏱ 15–60 min  Last verified: 25 May 2026 Affected versions: AlmaLinux 8 📖 ~4 min read  •  Source: AlmaLinux ALSA ALSA-2025:9318 Related CVEs: CVE-2019-10086 CVE-2025-48734 Upstream summary: The javapackages-tools packages provide macros and scripts to support Java packaging. Security Fix(es): * apache-commons-beanutils: does not suppresses the class property in PropertyUtilsBean by default […]

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Ubuntu 22.04 — setuptools — multiple vulnerabilities (3 CVEs) — patch and remediation guide — diagnosis and fix on Ubuntu 22.04

Ubuntu 22.04 — setuptools — multiple vulnerabilities (3 CVEs) — patch and remediation guide

  • September 6, 2025
  • Linux
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🟡 Medium   ⏱ 10–30 min  Last verified: 6 September 2025 Affected versions: Ubuntu 22.04 (jammy) 📖 ~4 min read  •  Source: Ubuntu Security Notice USN-7544-1 Related CVEs: CVE-2025-47273 CVE-2024-6345 CVE-2022-40897 Upstream summary: It was discovered that setuptools did not properly sanitize paths. An attacker could possibly use this issue to write files to arbitrary […]

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Ubuntu 18.04 — ghostscript — multiple vulnerabilities (20 CVEs) — patch and remediation guide — diagnosis and fix on Ubuntu 18.04

Ubuntu 18.04 — ghostscript — multiple vulnerabilities (20 CVEs) — patch and remediation guide

  • September 6, 2025
  • Linux
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🟠 High   ⏱ 15–60 min  Last verified: 6 September 2025 Affected versions: Ubuntu 18.04 (bionic) 📖 ~4 min read  •  Source: Ubuntu Security Notice USN-7904-1 Related CVEs: CVE-2025-59799 CVE-2025-59798 CVE-2024-56827 CVE-2025-48708 CVE-2024-29508 CVE-2025-27836 CVE-2025-27832 CVE-2025-27835  +12 more Upstream summary: Piotr Kajda discovered that Ghostscript incorrectly handled writing certain files. An attacker could possibly use […]

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AlmaLinux 8 — sssd — multiple vulnerabilities (3 CVEs) — patch and remediation guide — diagnosis and fix on AlmaLinux 8

AlmaLinux 8 — sssd — multiple vulnerabilities (3 CVEs) — patch and remediation guide

  • September 6, 2025
  • Linux
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🟠 High   ⏱ 15–60 min  Last verified: 25 May 2026 Affected versions: AlmaLinux 8 📖 ~4 min read  •  Source: AlmaLinux ALSA ALSA-2025:19610 Related CVEs: CVE-2025-11561 CVE-2021-3621 CVE-2023-3758 Upstream summary: The System Security Services Daemon (SSSD) service provides a set of daemons to manage access to remote directories and authentication mechanisms. It also provides […]

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Alpine Linux 3.20 — jetty-runner — multiple vulnerabilities (2 CVEs) — patch and remediation guide — diagnosis and fix on Alpine Linux 3.20

Alpine Linux 3.20 — jetty-runner — multiple vulnerabilities (2 CVEs) — patch and remediation guide

  • September 6, 2025
  • Linux
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🟡 Medium   ⏱ 10–30 min  Last verified: 25 May 2026 Affected versions: Alpine Linux 3.20 / fixed in 9.4.53.20231009-r0 📖 ~4 min read  •  Source: Alpine secdb entry — jetty-runner 9.4.53.20231009-r0 Related CVEs: CVE-2023-44487 CVE-2023-36478 Upstream summary: Alpine community repository for vv3.20 ships jetty-runner 9.4.53.20231009-r0 which addresses CVE-2023-44487. Table of contents Symptom & Impact […]

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Ubuntu 20.04 — mupdf — multiple vulnerabilities (14 CVEs) — patch and remediation guide — diagnosis and fix on Ubuntu 20.04

Ubuntu 20.04 — mupdf — multiple vulnerabilities (14 CVEs) — patch and remediation guide

  • September 6, 2025
  • Linux
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🟠 High   ⏱ 15–60 min  Last verified: 6 September 2025 Affected versions: Ubuntu 20.04 (focal) 📖 ~4 min read  •  Source: Ubuntu Security Notice USN-7888-1 Related CVEs: CVE-2023-51106 CVE-2023-51103 CVE-2024-46657 CVE-2025-46206 CVE-2023-51104 CVE-2023-51105 CVE-2020-26683 CVE-2018-16647  +6 more Upstream summary: It was discovered that MuPDF could be made to divide by zero. An attacker could […]

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

Oracle Linux 8 — libsoup — vulnerability — patch and remediation guide (ELSA-2026-0421)

  • September 6, 2025
  • Linux
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🟠 High   ⏱ 15–60 min  Last verified: 6 September 2025 Affected versions: Oracle Linux 8 📖 ~4 min read  •  Source: ELSA advisory ELSA-2026-0421 Related CVEs: CVE-2025-14523 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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