Common Problems

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

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

  • July 18, 2020
  • Linux
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🟠 High   ⏱ 15–60 min  Last verified: 18 July 2020 Affected versions: Ubuntu 16.04 (xenial) 📖 ~4 min read  •  Source: Ubuntu Security Notice USN-4636-1 Related CVEs: CVE-2020-25708 CVE-2019-20839 CVE-2019-20840 CVE-2020-14396 CVE-2020-14397 CVE-2020-14398 CVE-2020-14399 CVE-2020-14400  +12 more Upstream summary: It was discovered that LibVNCServer incorrectly handled certain internals. An attacker could possibly use this […]

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Oracle Linux 8 — unbound — vulnerability — patch and remediation guide — diagnosis and fix on Oracle Linux 8

Oracle Linux 8 — unbound — vulnerability — patch and remediation guide (ELSA-2020-1716)

  • July 18, 2020
  • Linux
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🟡 Medium   ⏱ 10–30 min  Last verified: 18 July 2020 Affected versions: Oracle Linux 8 📖 ~4 min read  •  Source: ELSA advisory ELSA-2020-1716 Related CVEs: CVE-2019-18934 Table of contents Symptom & Impact Environment & Reproduction Root Cause Analysis Quick Triage Step-by-Step Diagnosis Solution – Primary Fix Solution – Alternative Approaches Verification & Acceptance […]

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Alpine Linux edge — ipmitool — vulnerability — patch and remediation guide — diagnosis and fix on Alpine Linux edge

Alpine Linux edge — ipmitool — vulnerability — patch and remediation guide

  • July 18, 2020
  • Linux
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🟡 Medium   ⏱ 10–30 min  Last verified: 25 May 2026 Affected versions: Alpine Linux edge / fixed in 1.8.18-r9 📖 ~4 min read  •  Source: Alpine secdb entry — ipmitool 1.8.18-r9 Related CVEs: CVE-2020-5208 Upstream summary: Alpine community repository for vedge ships ipmitool 1.8.18-r9 which addresses CVE-2020-5208. Table of contents Symptom & Impact Environment […]

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SLES 12 — libtspi1 — vulnerability — patch and remediation guide — diagnosis and fix on SLES 12

SLES 12 — libtspi1 — vulnerability — patch and remediation guide

  • July 18, 2020
  • Linux
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🟠 High   ⏱ 15–60 min  Last verified: 18 July 2020 Affected versions: SLES 12 📖 ~4 min read  •  Source: SUSE advisory SUSE-SU-2022:2798-1 (see also SUSE bugzilla) Related CVEs: CVE-2020-24330 Upstream summary: An issue was discovered in TrouSerS through 0.3.14. If the tcsd daemon is started with root privileges instead of by the tss […]

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Oracle Linux 8 — GraalVM — vulnerability — patch and remediation guide — diagnosis and fix on Oracle Linux 8

Oracle Linux 8 — GraalVM — vulnerability — patch and remediation guide (ELSA-2023-12311)

  • July 18, 2020
  • Linux
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🟠 High   ⏱ 15–60 min  Last verified: 18 July 2020 Affected versions: Oracle Linux 8 📖 ~4 min read  •  Source: ELSA advisory ELSA-2023-12311 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 […]

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Common Problems 115550

crond Not Running So Scheduled Jobs Are Missed

🟡 Medium   ⏱ 5–30 min  Last verified: 17 July 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 115434

systemctl Service Fails at Boot with Dependency Errors

🟡 Medium   ⏱ 5–30 min  Last verified: 17 July 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 115078

RHEL 8 DNF Module Stream Conflict Prevents Package Installation

  • July 17, 2020
  • Linux
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🟡 Medium   ⏱ 5–30 min  Last verified: 17 July 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 115031

RHEL 8 RPM Database Corruption Blocking dnf Transactions

  • July 17, 2020
  • Linux
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🟡 Medium   ⏱ 5–30 min  Last verified: 17 July 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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