ubuntu

Ubuntu 16.04 — faad2 — multiple vulnerabilities (8 CVEs) — patch and remediation guide — diagnosis and fix on Ubuntu 16.04

Ubuntu 16.04 — faad2 — multiple vulnerabilities (8 CVEs) — patch and remediation guide

🟡 Medium   ⏱ 10–30 min  Last verified: 25 November 2023 Affected versions: Ubuntu 16.04 (xenial) 📖 ~4 min read  •  Source: Ubuntu Security Notice USN-6313-1 Related CVEs: CVE-2021-32272 CVE-2021-32273 CVE-2021-32274 CVE-2021-32276 CVE-2021-32277 CVE-2021-32278 CVE-2023-38857 CVE-2023-38858 Upstream summary: It was discovered that FAAD2 incorrectly handled certain inputs. If a user or an automated system were […]

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Ubuntu 16.04 — civicrm — vulnerability — patch and remediation guide — diagnosis and fix on Ubuntu 16.04

Ubuntu 16.04 — civicrm — vulnerability — patch and remediation guide

🟢 Low   ⏱ 5–15 min  Last verified: 22 November 2023 Affected versions: Ubuntu 16.04 (xenial) 📖 ~4 min read  •  Source: Ubuntu Security Notice USN-8242-1 Related CVEs: CVE-2023-28447 Upstream summary: Takuya Aramaki discovered that Smarty, vendored in CiviCRM, did not properly escape JavaScript code. An attacker could possibly use this issue to conduct a […]

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Common Problems 117452

Ubuntu 20.04 LTS – cloud-init network overrides break static IP settings – Fix & Prevention

🟡 Medium   ⏱ 5–30 min  Last verified: 21 November 2023 Affected versions: Ubuntu 20.04 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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Common Problems 117109

Ubuntu 22.04 LTS – multipath or duplicate UUID causes slow boot waits

🟡 Medium   ⏱ 5–30 min  Last verified: 21 November 2023 Affected versions: Ubuntu 22.04 LTS Ubuntu 22.04 Ubuntu 22.04.4 📖 ~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 […]

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Common Problems 117062

Ubuntu 22.04 GRUB menu missing after update

🟡 Medium   ⏱ 5–30 min  Last verified: 20 November 2023 📖 ~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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Ubuntu 20.04 — zbar — multiple vulnerabilities (2 CVEs) — patch and remediation guide — diagnosis and fix on Ubuntu 20.04

Ubuntu 20.04 — zbar — multiple vulnerabilities (2 CVEs) — patch and remediation guide

🟢 Low   ⏱ 5–15 min  Last verified: 20 November 2023 Affected versions: Ubuntu 20.04 (focal) 📖 ~4 min read  •  Source: Ubuntu Security Notice USN-7118-1 Related CVEs: CVE-2023-40889 CVE-2023-40890 Upstream summary: It was discovered that ZBar did not properly handle certain QR codes. If a user or automated system using ZBar were tricked into […]

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Common Problems 117035

Ubuntu 22.04 LTS – NGINX fails config test due to duplicate server_name – Fix & Prevention

🟡 Medium   ⏱ 5–30 min  Last verified: 19 November 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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Ubuntu 22.04 — w3m — multiple vulnerabilities (2 CVEs) — patch and remediation guide — diagnosis and fix on Ubuntu 22.04

Ubuntu 22.04 — w3m — multiple vulnerabilities (2 CVEs) — patch and remediation guide

🟢 Low   ⏱ 5–15 min  Last verified: 19 November 2023 Affected versions: Ubuntu 22.04 (jammy) 📖 ~4 min read  •  Source: Ubuntu Security Notice USN-6580-1 Related CVEs: CVE-2023-4255 CVE-2022-38223 Upstream summary: It was discovered that w3m incorrectly handled certain HTML files. An attacker could possibly use this issue to cause a crash or execute […]

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Ubuntu 20.04 — configobj — vulnerability — patch and remediation guide — diagnosis and fix on Ubuntu 20.04

Ubuntu 20.04 — configobj — vulnerability — patch and remediation guide

🟢 Low   ⏱ 5–15 min  Last verified: 18 November 2023 Affected versions: Ubuntu 20.04 (focal) 📖 ~4 min read  •  Source: Ubuntu Security Notice USN-7040-1 Related CVEs: CVE-2023-26112 Upstream summary: It was discovered that ConfigObj contains regex that is susceptible to catastrophic backtracking. An attacker could possibly use this issue to cause a regular […]

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Common Problems 117049

Ubuntu 22.04 LTS – cron jobs do not run because cron service is inactive

🟡 Medium   ⏱ 5–30 min  Last verified: 17 November 2023 Affected versions: Ubuntu 22.04 LTS Ubuntu 22.04 Ubuntu 22.04.4 📖 ~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 […]

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