Package Management

Ubuntu 16.04 — tomcat7 — multiple vulnerabilities (15 CVEs) — patch and remediation guide — diagnosis and fix on Ubuntu 16.04

Ubuntu 16.04 — tomcat7 — multiple vulnerabilities (15 CVEs) — patch and remediation guide

🟠 High   ⏱ 15–60 min  Last verified: 20 April 2021 Affected versions: Ubuntu 16.04 (xenial) 📖 ~4 min read  •  Source: Ubuntu Security Notice USN-7282-1 Related CVEs: CVE-2017-12616 CVE-2017-12617 CVE-2019-0221 CVE-2020-9484 CVE-2021-25329 CVE-2016-5388 CVE-2018-1336 CVE-2015-5174  +7 more Upstream summary: It was discovered that Tomcat incorrectly handled being configured with HTTP PUTs enabled. A remote […]

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

Oracle Linux 8 — olcne — vulnerability — patch and remediation guide (ELSA-2021-9525)

🟠 High   ⏱ 15–60 min  Last verified: 20 April 2021 Affected versions: Oracle Linux 8 📖 ~4 min read  •  Source: ELSA advisory ELSA-2021-9525 Related CVEs: CVE-2021-32781 CVE-2021-32778 CVE-2021-32777 CVE-2021-32779 CVE-2021-32780 Table of contents Symptom & Impact Environment & Reproduction Root Cause Analysis Quick Triage Step-by-Step Diagnosis Solution – Primary Fix Solution – Alternative […]

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Arch Linux — libssh — multiple vulnerabilities (2 CVEs) — patch and remediation guide — diagnosis and fix on Arch Linux

Arch Linux — libssh — multiple vulnerabilities (2 CVEs) — patch and remediation guide

🔴 Critical   ⏱ 15–90 min  Last verified: 25 May 2026 Affected versions: Arch Linux (rolling release) 📖 ~4 min read  •  Source: Arch ASA ASA-201810-10 Related CVEs: CVE-2018-10933 CVE-2020-1730 Upstream summary: Type: authentication bypass. Status: Fixed. Affected: 0.8.3-1. Fixed in: 0.8.4-1. Group: AVG-780. Table of contents Symptom & Impact Environment & Reproduction Root Cause […]

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Oracle Linux 8 — grafana security and — enhancement update — new behaviour and fixes — diagnosis and fix on Oracle Linux 8

Oracle Linux 8 — grafana security and — enhancement update — new behaviour and fixes (ELSA-2023-6972)

🟡 Medium   ⏱ 10–30 min  Last verified: 19 April 2021 Affected versions: Oracle Linux 8 📖 ~4 min read  •  Source: ELSA advisory ELSA-2023-6972 Related CVEs: CVE-2023-3128 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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Common Problems 118922

Ubuntu 14.04 LTS apt-get update fails with NO_PUBKEY errors

🟡 Medium   ⏱ 5–30 min  Last verified: 19 April 2021 Affected versions: 14.04 14.04.6 📖 ~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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How to Configure Kubernetes RBAC on Oracle Linux 8 — step-by-step Oracle Linux 8 tutorial on Progressive Robot

How to Configure Kubernetes RBAC on Oracle Linux 8

Introduction How to Configure Kubernetes RBAC on Oracle Linux 8 on Oracle Linux 8 provides administrators with a robust, enterprise-ready workflow that integrates cleanly with systemd, SELinux, firewalld, and the modern AppStream module system. In this tutorial we will walk through every step required, from package installation to verification, so that the resulting configuration is […]

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AlmaLinux 8 — memstrack — vulnerability — patch and remediation guide — diagnosis and fix on AlmaLinux 8

AlmaLinux 8 — memstrack — vulnerability — patch and remediation guide

🟡 Medium   ⏱ 10–30 min  Last verified: 25 May 2026 Affected versions: AlmaLinux 8 📖 ~4 min read  •  Source: AlmaLinux ALSA ALEA-2020:4516 Upstream summary: For detailed information on changes in this release, see the AlmaLinux Release Notes linked from the References section. Table of contents Symptom & Impact Environment & Reproduction Root Cause […]

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IBM AIX 7.2 — CVE-2020-4675 — vulnerability — patch and remediation guide — diagnosis and fix on IBM AIX 7.2

IBM AIX 7.2 — CVE-2020-4675 — vulnerability — patch and remediation guide

🟡 Medium   ⏱ 15–45 min  Last verified: 19 April 2021 Affected versions: IBM AIX 7.2 📖 ~4 min read  •  Source: NVD CVE-2020-4675, IBM Support Bulletin CVE: CVE-2020-4675 NVD summary: IBM InfoSphere Master Data Management Server 11.6 is vulnerable to cross-site request forgery which could allow an attacker to execute malicious and unauthorized actions […]

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FreeBSD 13 — remind — vulnerability — patch and remediation guide — diagnosis and fix on FreeBSD 13

FreeBSD 13 — remind — vulnerability — patch and remediation guide

🟢 Low   ⏱ 5–15 min  Last verified: 19 April 2021 Affected versions: FreeBSD 13 📖 ~4 min read  •  Source: FreeBSD VuXML VuXML topic: remind — buffer overflow with malicious reminder file input Related CVEs: CVE-2015-5957 Upstream summary: Dianne Skoll reports: BUG FIX: Fix a buffer overflow found by Alexander Keller. The bug can […]

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AlmaLinux 8 — stratis-cli — vulnerability — patch and remediation guide — diagnosis and fix on AlmaLinux 8

AlmaLinux 8 — stratis-cli — vulnerability — patch and remediation guide

🟡 Medium   ⏱ 10–30 min  Last verified: 25 May 2026 Affected versions: AlmaLinux 8 📖 ~4 min read  •  Source: AlmaLinux ALSA ALBA-2021:4217 Upstream summary: For detailed information on changes in this release, see the AlmaLinux Release Notes linked from the References section. Table of contents Symptom & Impact Environment & Reproduction Root Cause […]

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