ubuntu

Ubuntu 18.04 — mpmath — vulnerability — patch and remediation guide — diagnosis and fix on Ubuntu 18.04

Ubuntu 18.04 — mpmath — vulnerability — patch and remediation guide

🟢 Low   ⏱ 5–15 min  Last verified: 25 February 2021 Affected versions: Ubuntu 18.04 (bionic) 📖 ~4 min read  •  Source: Ubuntu Security Notice USN-7160-1 Related CVEs: CVE-2021-29063 Upstream summary: It was discovered Mpmath incorrectly handled certain regular expressions. An attacker could possibly use this issue to cause Mpmath to consume resources, leading to […]

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Ubuntu 14.04 — libwebp — multiple vulnerabilities (10 CVEs) — patch and remediation guide — diagnosis and fix on Ubuntu 14.04

Ubuntu 14.04 — libwebp — multiple vulnerabilities (10 CVEs) — patch and remediation guide

🟠 High   ⏱ 15–60 min  Last verified: 25 February 2021 Affected versions: Ubuntu 14.04 (trusty) 📖 ~4 min read  •  Source: Ubuntu Security Notice USN-4971-2 Related CVEs: CVE-2018-25009 CVE-2018-25010 CVE-2018-25011 CVE-2018-25012 CVE-2018-25013 CVE-2018-25014 CVE-2020-36328 CVE-2020-36329  +2 more Upstream summary: USN-4971-1 fixed several vulnerabilities in libwebp. This update provides the corresponding update for Ubuntu 14.04 […]

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Common Problems 119147

Ubuntu 14.04 LTS – swap partition not activating at boot

🟡 Medium   ⏱ 5–30 min  Last verified: 24 February 2021 Affected versions: Ubuntu 14.04 LTS Ubuntu 14.04 Ubuntu 14.04.6 📖 ~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 119130

Ubuntu 14.04 LTS SNMP Monitoring Gaps After Community String Rotation

🟡 Medium   ⏱ 5–30 min  Last verified: 24 February 2021 Affected versions: 14.04 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 118463

Ubuntu 16.04 LTS – inode exhaustion despite available disk space – Fix & Prevention

🟠 High   ⏱ 5–30 min  Last verified: 24 February 2021 Affected versions: Ubuntu 16.04 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 118422

Ubuntu 16.04 DNS Resolution Fails Intermittently

🟡 Medium   ⏱ 5–30 min  Last verified: 23 February 2021 📖 ~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 18.04 — nettle — multiple vulnerabilities (3 CVEs) — patch and remediation guide — diagnosis and fix on Ubuntu 18.04

Ubuntu 18.04 — nettle — multiple vulnerabilities (3 CVEs) — patch and remediation guide

🟡 Medium   ⏱ 10–30 min  Last verified: 23 February 2021 Affected versions: Ubuntu 18.04 (bionic) 📖 ~4 min read  •  Source: Ubuntu Security Notice USN-4990-1 Related CVEs: CVE-2018-16869 CVE-2021-3580 CVE-2021-20305 Upstream summary: It was discovered that Nettle incorrectly handled RSA decryption. A remote attacker could possibly use this issue to cause Nettle to crash, […]

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CHAT