2023 - Page 287 of 885

NetBSD 9.4 — apache-2.0.54 — vulnerability — patch and remediation guide — diagnosis and fix on NetBSD 9.4

NetBSD 9.4 — apache-2.0.54 — vulnerability — patch and remediation guide

  • September 12, 2023
  • BSD
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🟡 Medium   ⏱ 10–30 min  Last verified: 25 May 2026 Affected versions: NetBSD 9.4 📖 ~4 min read  •  Source: pkgsrc audit-packages entry Upstream summary: pkgsrc audit-packages flagged apache-2.0.54{,nb[12]} for vulnerability class 'cache-poisoning'. Reference: https://cve.mitre.org/cgi-bin/cvename.cgi?name=CAN-2005-2088 Table of contents Symptom & Impact Environment & Reproduction Root Cause Analysis Quick Triage Step-by-Step Diagnosis Solution – Primary […]

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Ubuntu 22.04 — llvm-toolchain-14 — multiple vulnerabilities (4 CVEs) — patch and remediation guide — diagnosis and fix on Ubuntu 22.04

Ubuntu 22.04 — llvm-toolchain-14 — multiple vulnerabilities (4 CVEs) — patch and remediation guide

  • September 12, 2023
  • Linux
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🟡 Medium   ⏱ 10–30 min  Last verified: 12 September 2023 Affected versions: Ubuntu 22.04 (jammy) 📖 ~4 min read  •  Source: Ubuntu Security Notice USN-6258-1 Related CVEs: CVE-2023-29932 CVE-2023-29933 CVE-2023-29934 CVE-2023-29939 Upstream summary: It was discovered that LLVM Toolchain did not properly manage memory under certain circumstances. If a user were tricked into opening […]

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How to Set Up Port Knocking for SSH on RHEL 9 — step-by-step RHEL 9 tutorial on Progressive Robot

How to Set Up Port Knocking for SSH on RHEL 9

  • September 12, 2023
  • Linux
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Port knocking is a security technique that hides your SSH port from network scanners by keeping it firewalled until a specific sequence of connection attempts is made. On RHEL 9, combining knockd with nftables lets you expose SSH only to clients who know the secret knock sequence, dramatically reducing brute-force exposure. This tutorial walks through […]

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Oracle Linux 9 — nghttp2 — vulnerability — patch and remediation guide — diagnosis and fix on Oracle Linux 9

Oracle Linux 9 — nghttp2 — vulnerability — patch and remediation guide (ELSA-2023-6746)

  • September 12, 2023
  • Linux
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🟠 High   ⏱ 15–60 min  Last verified: 12 September 2023 Affected versions: Oracle Linux 9 📖 ~4 min read  •  Source: ELSA advisory ELSA-2023-6746 Related CVEs: CVE-2023-44487 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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NetBSD 9.4 — musicbrainz — vulnerability — patch and remediation guide — diagnosis and fix on NetBSD 9.4

NetBSD 9.4 — musicbrainz — vulnerability — patch and remediation guide

  • September 12, 2023
  • BSD
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🟠 High   ⏱ 15–60 min  Last verified: 25 May 2026 Affected versions: NetBSD 9.4 📖 ~4 min read  •  Source: pkgsrc audit-packages entry Related CVEs: CVE-2006-4197 Upstream summary: pkgsrc audit-packages flagged musicbrainz<2.1.4 for vulnerability class 'remote-code-execution'. Reference: https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2006-4197 Table of contents Symptom & Impact Environment & Reproduction Root Cause Analysis Quick Triage Step-by-Step Diagnosis […]

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Windows Server 2016 — KB5025230 — multiple vulnerabilities (20 CVEs) — patch and remediation guide — diagnosis and fix on Windows Server 2016

Windows Server 2016 — KB5025230 — multiple vulnerabilities (20 CVEs) — patch and remediation guide

🔴 Critical   ⏱ 15–90 min  Last verified: 25 May 2026 Affected versions: Windows Server 2016 📖 ~4 min read  •  Source: Microsoft KB5025230 • MSRC update-guide entry Related CVEs: CVE-2023-21554 CVE-2023-28219 CVE-2023-28220 CVE-2023-28231 CVE-2023-28232 CVE-2023-28250 CVE-2023-21769 CVE-2023-21729  +12 more Affected components: Windows Server 2016 Windows Server 2016 (Server Core installation) Table of contents Symptom […]

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Oracle Linux 8 — pki-core — vulnerability — patch and remediation guide — diagnosis and fix on Oracle Linux 8

Oracle Linux 8 — pki-core — vulnerability — patch and remediation guide (ELSA-2024-4367)

  • September 12, 2023
  • Linux
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🟠 High   ⏱ 15–60 min  Last verified: 12 September 2023 Affected versions: Oracle Linux 8 📖 ~4 min read  •  Source: ELSA advisory ELSA-2024-4367 Related CVEs: CVE-2023-4727 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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Oracle Linux 8 — go-toolset:ol8 — vulnerability — patch and remediation guide — diagnosis and fix on Oracle Linux 8

Oracle Linux 8 — go-toolset:ol8 — vulnerability — patch and remediation guide (ELSA-2023-5721)

  • September 12, 2023
  • Linux
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🟠 High   ⏱ 15–60 min  Last verified: 12 September 2023 Affected versions: Oracle Linux 8 📖 ~4 min read  •  Source: ELSA advisory ELSA-2023-5721 Related CVEs: CVE-2023-39325 CVE-2023-44487 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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Common Problems 116933

Ubuntu 22.04 LTS – netplan changes do not apply after interface edits – Fix & Prevention

  • September 12, 2023
  • Linux
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🟠 High   ⏱ 5–30 min  Last verified: 12 September 2023 Affected versions: Ubuntu 22.04 LTS 📖 ~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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openSUSE Leap 15.5 — libcryptopp8_6_0 — multiple vulnerabilities (2 CVEs) — patch and remediation guide — diagnosis and fix on openSUSE Leap 15.5

openSUSE Leap 15.5 — libcryptopp8_6_0 — multiple vulnerabilities (2 CVEs) — patch and remediation guide

  • September 12, 2023
  • Linux
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🟡 Medium   ⏱ 10–30 min  Last verified: 25 May 2026 Affected versions: openSUSE Leap 15.5 📖 ~4 min read  •  Source: SUSE advisory SUSE-SU-2024:0157-1 (see also SUSE bugzilla) Related CVEs: CVE-2023-50981 CVE-2023-50980 Upstream summary: ModularSquareRoot in Crypto++ (aka cryptopp) through 8.9.0 allows attackers to cause a denial of service (infinite loop) via crafted DER […]

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