Troubleshooting

Ubuntu 18.04 — wavpack — multiple vulnerabilities (13 CVEs) — patch and remediation guide — diagnosis and fix on Ubuntu 18.04

Ubuntu 18.04 — wavpack — multiple vulnerabilities (13 CVEs) — patch and remediation guide

  • April 23, 2020
  • Linux
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🟠 High   ⏱ 15–60 min  Last verified: 23 April 2020 Affected versions: Ubuntu 18.04 (bionic) 📖 ~4 min read  •  Source: Ubuntu Security Notice USN-4682-1 Related CVEs: CVE-2020-35738 CVE-2019-1010315 CVE-2019-1010317 CVE-2019-1010318 CVE-2019-1010319 CVE-2019-11498 CVE-2018-19840 CVE-2018-19841  +5 more Upstream summary: It was discovered that WavPack incorrectly handled certain WAV files. An attacker could possibly use […]

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Common Problems 112905

Windows Server 2016 – LSASS high CPU and authentication slowdowns – Fix & Prevention

🟠 High   ⏱ 5–30 min  Last verified: 23 April 2020 Affected versions: Windows Server 2016 📖 ~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 18.04 — opendmarc — multiple vulnerabilities (3 CVEs) — patch and remediation guide — diagnosis and fix on Ubuntu 18.04

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

  • April 23, 2020
  • Linux
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🟡 Medium   ⏱ 10–30 min  Last verified: 23 April 2020 Affected versions: Ubuntu 18.04 (bionic) 📖 ~4 min read  •  Source: Ubuntu Security Notice USN-6356-1 Related CVEs: CVE-2020-12272 CVE-2020-12460 CVE-2019-16378 Upstream summary: Jianjun Chen, Vern Paxson and Jian Jiang discovered that OpenDMARC incorrectly handled certain inputs. If a user or an automated system were […]

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Oracle Linux 8 — Unbreakable Enterprise kernel — vulnerability — patch and remediation guide — diagnosis and fix on Oracle Linux 8

Oracle Linux 8 — Unbreakable Enterprise kernel — vulnerability — patch and remediation guide (ELSA-2020-5756)

  • April 23, 2020
  • Linux
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🟠 High   ⏱ 15–60 min  Last verified: 23 April 2020 Affected versions: Oracle Linux 8 📖 ~4 min read  •  Source: ELSA advisory ELSA-2020-5756 Related CVEs: CVE-2020-0543 CVE-2020-10757 CVE-2020-10711 CVE-2020-12655 CVE-2020-12770 CVE-2019-19769 Table of contents Symptom & Impact Environment & Reproduction Root Cause Analysis Quick Triage Step-by-Step Diagnosis Solution – Primary Fix Solution – […]

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Arch Linux — coturn — vulnerability — patch and remediation guide — diagnosis and fix on Arch Linux

Arch Linux — coturn — vulnerability — patch and remediation guide

  • April 23, 2020
  • Linux
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🟠 High   ⏱ 15–60 min  Last verified: 25 May 2026 Affected versions: Arch Linux (rolling release) 📖 ~4 min read  •  Source: Arch ASA ASA-202101-21 Related CVEs: CVE-2020-26262 Upstream summary: Type: insufficient validation. Status: Fixed. Affected: 4.5.1.3-2. Fixed in: 4.5.2-1. Group: AVG-1430. Table of contents Symptom & Impact Environment & Reproduction Root Cause Analysis […]

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How to Manage Users and Groups on Debian 10 — step-by-step Debian 10 tutorial on Progressive Robot

How to Manage Users and Groups on Debian 10

  • April 23, 2020
  • Linux
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Introduction How to Manage Users and Groups on Debian 10 is a fundamental operation for any administrator maintaining a Debian 10 Buster server. Debian 10 Buster ships with the Linux 6.12 kernel, updated toolchains, and a fully refreshed package archive — meaning version numbers, configuration file paths, and some dependency chains differ from Debian 10. […]

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

Oracle Linux 8 — fribidi — vulnerability — patch and remediation guide (ELSA-2019-4361)

  • April 23, 2020
  • Linux
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🟠 High   ⏱ 15–60 min  Last verified: 23 April 2020 Affected versions: Oracle Linux 8 📖 ~4 min read  •  Source: ELSA advisory ELSA-2019-4361 Related CVEs: CVE-2019-18397 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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Oracle Linux 8 — freeradius:3.0 — vulnerability — patch and remediation guide — diagnosis and fix on Oracle Linux 8

Oracle Linux 8 — freeradius:3.0 — vulnerability — patch and remediation guide (ELSA-2019-1142)

  • April 23, 2020
  • Linux
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🟠 High   ⏱ 15–60 min  Last verified: 23 April 2020 Affected versions: Oracle Linux 8 📖 ~4 min read  •  Source: ELSA advisory ELSA-2019-1142 Related CVEs: CVE-2019-11235 CVE-2019-11234 Table of contents Symptom & Impact Environment & Reproduction Root Cause Analysis Quick Triage Step-by-Step Diagnosis Solution – Primary Fix Solution – Alternative Approaches Verification & […]

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Arch Linux — libsoup — vulnerability — patch and remediation guide — diagnosis and fix on Arch Linux

Arch Linux — libsoup — vulnerability — patch and remediation guide

  • April 23, 2020
  • Linux
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🔴 Critical   ⏱ 15–90 min  Last verified: 25 May 2026 Affected versions: Arch Linux (rolling release) 📖 ~4 min read  •  Source: Arch ASA ASA-201708-5 Related CVEs: CVE-2017-2885 Upstream summary: Type: arbitrary code execution. Status: Fixed. Affected: 2.58.1-1. Fixed in: 2.58.2-1. Group: AVG-376. Table of contents Symptom & Impact Environment & Reproduction Root Cause […]

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SLES 12 — graphviz — multiple vulnerabilities (2 CVEs) — patch and remediation guide — diagnosis and fix on SLES 12

SLES 12 — graphviz — multiple vulnerabilities (2 CVEs) — patch and remediation guide

  • April 23, 2020
  • Linux
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🔴 Critical   ⏱ 15–90 min  Last verified: 23 April 2020 Affected versions: SLES 12 📖 ~4 min read  •  Source: SUSE advisory SUSE-SU-2021:1646-1 (see also SUSE bugzilla) Related CVEs: CVE-2020-18032 CVE-2018-10196 Upstream summary: Buffer Overflow in Graphviz Graph Visualization Tools from commit ID f8b9e035 and earlier allows remote attackers to execute arbitrary code or […]

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