ubuntu

Common Problems 118058

Ubuntu 18.04 LTS – Docker daemon fails to start after storage driver conflict – Fix & Prevention

🟠 High   ⏱ 5–30 min  Last verified: 31 October 2020 Affected versions: Ubuntu 18.04 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 16.04 — libpam-tacplus — vulnerability — patch and remediation guide — diagnosis and fix on Ubuntu 16.04

Ubuntu 16.04 — libpam-tacplus — vulnerability — patch and remediation guide

🟢 Low   ⏱ 5–15 min  Last verified: 30 October 2020 Affected versions: Ubuntu 16.04 (xenial) 📖 ~4 min read  •  Source: Ubuntu Security Notice USN-4521-1 Related CVEs: CVE-2020-13881 Upstream summary: It was discovered that pam_tacplus did not properly manage shared secrets if DEBUG loglevel and journald are used. A remote attacker could use this […]

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Common Problems 119054

Ubuntu 14.04 LTS TLS Handshake Errors with Legacy OpenSSL

🟡 Medium   ⏱ 5–30 min  Last verified: 29 October 2020 📖 ~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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Common Problems 117509

Ubuntu 20.04 keyboard layout keeps resetting

🟡 Medium   ⏱ 5–30 min  Last verified: 29 October 2020 📖 ~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 — kamailio — multiple vulnerabilities (5 CVEs) — patch and remediation guide — diagnosis and fix on Ubuntu 18.04

Ubuntu 18.04 — kamailio — multiple vulnerabilities (5 CVEs) — patch and remediation guide

🟡 Medium   ⏱ 10–30 min  Last verified: 29 October 2020 Affected versions: Ubuntu 18.04 (bionic) 📖 ~4 min read  •  Source: Ubuntu Security Notice USN-7416-1 Related CVEs: CVE-2016-2385 CVE-2018-14767 CVE-2020-28361 CVE-2018-16657 CVE-2020-27507 Upstream summary: Stelios Tsampas discovered that Kamailio did not correctly handle certain memory operations, which could lead to a buffer overflow. A […]

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Ubuntu 20.04 — ruby-websocket-extensions — vulnerability — patch and remediation guide — diagnosis and fix on Ubuntu 20.04

Ubuntu 20.04 — ruby-websocket-extensions — vulnerability — patch and remediation guide

🟢 Low   ⏱ 5–15 min  Last verified: 29 October 2020 Affected versions: Ubuntu 20.04 (focal) 📖 ~4 min read  •  Source: Ubuntu Security Notice USN-4502-1 Related CVEs: CVE-2020-7663 Upstream summary: It was discovered that websocket-extensions does not properly parse special headers. A remote attacker could use this issue to cause regex backtracking, resulting in […]

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