DNS

Common Problems 114407

RHEL 9 Repositories Not Enabled After Registration

🟡 Medium   ⏱ 5–30 min  Last verified: 12 July 2024 📖 ~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 & Cross-Refs References & Further […]

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Alpine Linux 3.18 — coredns — multiple vulnerabilities (2 CVEs) — patch and remediation guide — diagnosis and fix on Alpine Linux 3.18

Alpine Linux 3.18 — coredns — multiple vulnerabilities (2 CVEs) — patch and remediation guide

🟡 Medium   ⏱ 10–30 min  Last verified: 25 May 2026 Affected versions: Alpine Linux 3.18 / fixed in 1.9.3-r0 📖 ~4 min read  •  Source: Alpine secdb entry — coredns 1.9.3-r0 Related CVEs: CVE-2022-27191 CVE-2022-28948 Upstream summary: Alpine community repository for vv3.18 ships coredns 1.9.3-r0 which addresses CVE-2022-27191. Table of contents Symptom & Impact […]

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Common Problems 114559

Cockpit Web Console Unreachable After Hardening

🟡 Medium   ⏱ 5–30 min  Last verified: 6 July 2024 📖 ~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 & Cross-Refs References & Further […]

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NetBSD 9.4 — adns — multiple vulnerabilities (7 CVEs) — patch and remediation guide — diagnosis and fix on NetBSD 9.4

NetBSD 9.4 — adns — multiple vulnerabilities (7 CVEs) — patch and remediation guide

🟡 Medium   ⏱ 10–30 min  Last verified: 25 May 2026 Affected versions: NetBSD 9.4 📖 ~4 min read  •  Source: pkgsrc audit-packages entry Related CVEs: CVE-2017-9103 CVE-2017-9105 CVE-2017-9106 CVE-2017-9107 CVE-2017-9108 CVE-2017-9109 CVE-2017-9104 Upstream summary: pkgsrc audit-packages flagged adns<1.5.2 for vulnerability class 'buffer-overflow'. Reference: https://nvd.nist.gov/vuln/detail/CVE-2017-9103 Table of contents Symptom & Impact Environment & Reproduction Root […]

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Common Problems 114440

Firewalld Blocking Required Application Port

🟡 Medium   ⏱ 5–30 min  Last verified: 2 July 2024 📖 ~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 & Cross-Refs References & Further […]

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NetBSD 9.4 — bind-9.[01].* — vulnerability — patch and remediation guide — diagnosis and fix on NetBSD 9.4

NetBSD 9.4 — bind — vulnerability — patch and remediation guide

🟢 Low   ⏱ 5–15 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 bind for vulnerability class 'denial-of-service'. Reference: http://www.cert.org/advisories/CA-2002-15.html Table of contents Symptom & Impact Environment & Reproduction Root Cause Analysis Quick Triage Step-by-Step Diagnosis Solution – Primary […]

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NetBSD 9.4 — powerdns — multiple vulnerabilities (20 CVEs) — patch and remediation guide — diagnosis and fix on NetBSD 9.4

NetBSD 9.4 — powerdns — multiple vulnerabilities (20 CVEs) — patch and remediation guide

🟠 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-2021-36754 CVE-2008-3337 CVE-2018-1046 CVE-2016-7073 CVE-2016-7074 CVE-2019-3871 CVE-2020-17482 CVE-2020-24696  +12 more Upstream summary: pkgsrc audit-packages flagged powerdns>=4.5.0<4.5.1 for vulnerability class 'remote-denial-of-service'. Reference: https://nvd.nist.gov/vuln/detail/CVE-2021-36754 Table of contents Symptom & Impact Environment […]

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Common Problems 114522

RHEL 9 DNF Update Fails with GPG Signature Errors

🟡 Medium   ⏱ 5–30 min  Last verified: 24 June 2024 📖 ~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 & Cross-Refs References & Further […]

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Oracle Linux 8 — bind9.16 — vulnerability — patch and remediation guide — diagnosis and fix on Oracle Linux 8

Oracle Linux 8 — bind9.16 — vulnerability — patch and remediation guide (ELSA-2024-1781)

🟠 High   ⏱ 15–60 min  Last verified: 21 June 2024 Affected versions: Oracle Linux 8 📖 ~4 min read  •  Source: ELSA advisory ELSA-2024-1781 Related CVEs: CVE-2023-50868 CVE-2023-6516 CVE-2023-50387 CVE-2023-5679 CVE-2023-5517 CVE-2023-4408 Table of contents Symptom & Impact Environment & Reproduction Root Cause Analysis Quick Triage Step-by-Step Diagnosis Solution – Primary Fix Solution – […]

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Common Problems 122702

Boot Loader Variables Not Persisting Across Reboot

🟡 Medium   ⏱ 5–30 min  Last verified: 20 June 2024 Affected versions: FreeBSD 14 📖 ~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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