Ubuntu 16.04

Common Problems 118434

Ubuntu 16.04 LTS systemd service stuck in crash loop

🟠 High   ⏱ 5–30 min  Last verified: 1 May 2023 Affected versions: 16.04 📖 ~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 […]

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Ubuntu 16.04 — klibc — multiple vulnerabilities (9 CVEs) — patch and remediation guide — diagnosis and fix on Ubuntu 16.04

Ubuntu 16.04 — klibc — multiple vulnerabilities (9 CVEs) — patch and remediation guide

🟡 Medium   ⏱ 10–30 min  Last verified: 28 April 2023 Affected versions: Ubuntu 16.04 (xenial) 📖 ~4 min read  •  Source: Ubuntu Security Notice USN-7959-1 Related CVEs: CVE-2016-9843 CVE-2016-9840 CVE-2016-9841 CVE-2018-25032 CVE-2022-37434 CVE-2021-31870 CVE-2021-31871 CVE-2021-31872  +1 more Upstream summary: It was discovered that zlib, vendored in klibc, did not properly handle integer arithmetic. An […]

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Common Problems 118418

Release File Expired or Not Yet Valid

🟡 Medium   ⏱ 5–30 min  Last verified: 27 April 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 16.04 — libhtml-stripscripts-perl — vulnerability — patch and remediation guide — diagnosis and fix on Ubuntu 16.04

Ubuntu 16.04 — libhtml-stripscripts-perl — vulnerability — patch and remediation guide

🟢 Low   ⏱ 5–15 min  Last verified: 27 April 2023 Affected versions: Ubuntu 16.04 (xenial) 📖 ~4 min read  •  Source: Ubuntu Security Notice USN-6100-1 Related CVEs: CVE-2023-24038 Upstream summary: It was discovered that HTML::StripScripts does not properly parse HTML content with certain style attributes. A remote attacker could use this issue to cause […]

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Ubuntu 16.04 — gimp-dds — vulnerability — patch and remediation guide — diagnosis and fix on Ubuntu 16.04

Ubuntu 16.04 — gimp-dds — vulnerability — patch and remediation guide

🟢 Low   ⏱ 5–15 min  Last verified: 26 April 2023 Affected versions: Ubuntu 16.04 (xenial) 📖 ~4 min read  •  Source: Ubuntu Security Notice USN-7209-1 Related CVEs: CVE-2023-44441 Upstream summary: Jacob Boerema discovered that the GIMP DDS Plugin incorrectly processed DDS files due to a memory issue. An attacker could exploit this through a […]

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Ubuntu 16.04 — edk2 — multiple vulnerabilities (20 CVEs) — patch and remediation guide — diagnosis and fix on Ubuntu 16.04

Ubuntu 16.04 — edk2 — multiple vulnerabilities (20 CVEs) — patch and remediation guide

🟠 High   ⏱ 15–60 min  Last verified: 26 April 2023 Affected versions: Ubuntu 16.04 (xenial) 📖 ~4 min read  •  Source: Ubuntu Security Notice USN-7060-1 Related CVEs: CVE-2019-0161 CVE-2021-28210 CVE-2021-28211 CVE-2021-38575 CVE-2021-38578 CVE-2022-1292 CVE-2017-5731 CVE-2018-12182  +12 more Upstream summary: It was discovered that EDK II did not check the buffer length in XHCI, which […]

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Ubuntu 16.04 — pdns — multiple vulnerabilities (6 CVEs) — patch and remediation guide — diagnosis and fix on Ubuntu 16.04

Ubuntu 16.04 — pdns — multiple vulnerabilities (6 CVEs) — patch and remediation guide

🟡 Medium   ⏱ 10–30 min  Last verified: 24 April 2023 Affected versions: Ubuntu 16.04 (xenial) 📖 ~4 min read  •  Source: Ubuntu Security Notice USN-7203-1 Related CVEs: CVE-2018-1046 CVE-2018-10851 CVE-2018-14626 CVE-2018-14644 CVE-2020-17482 CVE-2022-27227 Upstream summary: Wei Hao discovered that PowerDNS Authoritative Server incorrectly handled memory when accessing certain files. An attacker could possibly use […]

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Ubuntu 16.04 — twig — multiple vulnerabilities (3 CVEs) — patch and remediation guide — diagnosis and fix on Ubuntu 16.04

Ubuntu 16.04 — twig — multiple vulnerabilities (3 CVEs) — patch and remediation guide

🟡 Medium   ⏱ 10–30 min  Last verified: 20 April 2023 Affected versions: Ubuntu 16.04 (xenial) 📖 ~4 min read  •  Source: Ubuntu Security Notice USN-5947-1 Related CVEs: CVE-2019-9942 CVE-2022-23614 CVE-2022-39261 Upstream summary: Fabien Potencier discovered that Twig was not properly enforcing sandbox policies when dealing with objects automatically cast to strings by PHP. An […]

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Common Problems 118578

PHP-FPM pool fails due to permission errors

🟡 Medium   ⏱ 5–30 min  Last verified: 19 April 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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