ubuntu

Ubuntu 18.04 — gdm3 — multiple vulnerabilities (3 CVEs) — patch and remediation guide — diagnosis and fix on Ubuntu 18.04

Ubuntu 18.04 — gdm3 — multiple vulnerabilities (3 CVEs) — patch and remediation guide

🟡 Medium   ⏱ 10–30 min  Last verified: 18 August 2020 Affected versions: Ubuntu 18.04 (bionic) 📖 ~4 min read  •  Source: Ubuntu Security Notice USN-4614-1 Related CVEs: CVE-2020-16125 CVE-2019-3825 CVE-2018-14424 Upstream summary: Kevin Backhouse discovered that GDM incorrectly launched the initial setup tool when the accountsservice daemon was not reachable. A local attacker able […]

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Common Problems 117392

Ubuntu 20.04 LTS APT Lock File Prevents Updates

🟡 Medium   ⏱ 5–30 min  Last verified: 17 August 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 118531

Ubuntu 16.04 LTS – cloud-init stalls and delays first boot provisioning – Fix & Prevention

🟡 Medium   ⏱ 5–30 min  Last verified: 16 August 2020 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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Ubuntu 20.04 — spice — vulnerability — patch and remediation guide — diagnosis and fix on Ubuntu 20.04

Ubuntu 20.04 — spice — vulnerability — patch and remediation guide

🟢 Low   ⏱ 5–15 min  Last verified: 16 August 2020 Affected versions: Ubuntu 20.04 (focal) 📖 ~4 min read  •  Source: Ubuntu Security Notice USN-4572-1 Related CVEs: CVE-2020-14355 Upstream summary: Frediano Ziglio discovered that Spice incorrectly handled QUIC image decoding. A remote attacker could use this to cause Spice to crash, resulting in a […]

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Ubuntu 18.04 — snapcraft — multiple vulnerabilities (2 CVEs) — patch and remediation guide — diagnosis and fix on Ubuntu 18.04

Ubuntu 18.04 — snapcraft — multiple vulnerabilities (2 CVEs) — patch and remediation guide

🟢 Low   ⏱ 5–15 min  Last verified: 14 August 2020 Affected versions: Ubuntu 18.04 (bionic) 📖 ~4 min read  •  Source: Ubuntu Security Notice USN-4661-1 Related CVEs: CVE-2020-27348 https://launchpad.net/bugs/1901572 Upstream summary: It was discovered that Snapcraft includes the current directory when configuring LD_LIBRARY_PATH for application commands. If a user were tricked into installing a […]

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