Debian

Debian 10 — modsecurity-apache — vulnerability — patch and remediation guide — diagnosis and fix on Debian 10

Debian 10 — modsecurity-apache — vulnerability — patch and remediation guide

🟢 Low   ⏱ 5–15 min  Last verified: 28 July 2021 Affected versions: Debian 10 (buster) 📖 ~4 min read  •  Source: Debian Security Tracker Related CVEs: CVE-2021-42717 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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Common Problems 121623

Debian 9: UFW blocks required application ports

🟡 Medium   ⏱ 5–30 min  Last verified: 27 July 2021 Affected versions: Debian 9 📖 ~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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Debian 10 — connman — vulnerability — patch and remediation guide — diagnosis and fix on Debian 10

Debian 10 — connman — vulnerability — patch and remediation guide

🟢 Low   ⏱ 5–15 min  Last verified: 26 July 2021 Affected versions: Debian 10 (buster) 📖 ~4 min read  •  Source: Debian Security Tracker Related CVEs: CVE-2021-26675 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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Debian 10 — policykit-1 — vulnerability — patch and remediation guide — diagnosis and fix on Debian 10

Debian 10 — policykit-1 — vulnerability — patch and remediation guide

🟢 Low   ⏱ 5–15 min  Last verified: 25 July 2021 Affected versions: Debian 10 (buster) 📖 ~4 min read  •  Source: Debian Security Tracker Related CVEs: CVE-2021-4034 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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Common Problems 121564

Debian 9 – SSH login denied after hardening changes

🟠 High   ⏱ 5–30 min  Last verified: 24 July 2021 Affected versions: Debian 9 📖 ~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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Debian 10 — pygments — multiple vulnerabilities (2 CVEs) — patch and remediation guide — diagnosis and fix on Debian 10

Debian 10 — pygments — multiple vulnerabilities (2 CVEs) — patch and remediation guide

🟢 Low   ⏱ 5–15 min  Last verified: 23 July 2021 Affected versions: Debian 10 (buster) 📖 ~4 min read  •  Source: Debian Security Tracker Related CVEs: CVE-2021-20270 CVE-2021-27291 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 121691

Debian 9 – Certbot Renewal Fails in Automation – Reliable ACME Recovery

🟠 High   ⏱ 5–30 min  Last verified: 22 July 2021 Affected versions: Debian 9 📖 ~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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Debian 10 — php7.3 — multiple vulnerabilities (7 CVEs) — patch and remediation guide — diagnosis and fix on Debian 10

Debian 10 — php7.3 — multiple vulnerabilities (7 CVEs) — patch and remediation guide

🟡 Medium   ⏱ 10–30 min  Last verified: 22 July 2021 Affected versions: Debian 10 (buster) 📖 ~4 min read  •  Source: Debian Security Tracker Related CVEs: CVE-2019-11036 CVE-2019-11043 CVE-2019-11045 CVE-2019-11048 CVE-2020-7068 CVE-2021-21703 CVE-2021-21704 Table of contents Symptom & Impact Environment & Reproduction Root Cause Analysis Quick Triage Step-by-Step Diagnosis Solution – Primary Fix Solution […]

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