Package Management

Oracle Linux 9 — tomcat — security and stability fixes — required update — diagnosis and fix on Oracle Linux 9

Oracle Linux 9 — tomcat — security and stability fixes — required update (ELSA-2023-6570)

🟡 Medium   ⏱ 10–30 min  Last verified: 21 April 2023 Affected versions: Oracle Linux 9 📖 ~4 min read  •  Source: ELSA advisory ELSA-2023-6570 Related CVEs: CVE-2023-28708 CVE-2023-28709 CVE-2023-24998 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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Alpine Linux edge — tinyssh — vulnerability — patch and remediation guide — diagnosis and fix on Alpine Linux edge

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

🟡 Medium   ⏱ 10–30 min  Last verified: 25 May 2026 Affected versions: Alpine Linux edge / fixed in 20230101-r3 📖 ~4 min read  •  Source: Alpine secdb entry — tinyssh 20230101-r3 Related CVEs: CVE-2023-48795 Upstream summary: Alpine community repository for vedge ships tinyssh 20230101-r3 which addresses CVE-2023-48795. Table of contents Symptom & Impact Environment […]

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How to Monitor System Resources on Oracle Linux 9 — step-by-step Oracle Linux 9 tutorial on Progressive Robot

How to Monitor System Resources on Oracle Linux 9

Introduction How to Monitor System Resources on Oracle Linux 9 on Oracle Linux 9 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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Ubuntu 22.04 — h2o — vulnerability — patch and remediation guide — diagnosis and fix on Ubuntu 22.04

Ubuntu 22.04 — h2o — vulnerability — patch and remediation guide

🟢 Low   ⏱ 5–15 min  Last verified: 21 April 2023 Affected versions: Ubuntu 22.04 (jammy) 📖 ~4 min read  •  Source: Ubuntu Security Notice USN-7892-1 Related CVEs: CVE-2023-44487 Upstream summary: It was discovered that H2O exhibited poor server resource management in its HTTP/2 protocol. An attacker could possibly use this issue to cause H2O […]

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CentOS Stream 9 — bluez — multiple vulnerabilities (10 CVEs) — patch and remediation guide — diagnosis and fix on CentOS Stream 9

CentOS Stream 9 — bluez — multiple vulnerabilities (10 CVEs) — patch and remediation guide

🟡 Medium   ⏱ 10–30 min  Last verified: 21 April 2023 Affected versions: CentOS Stream 9 📖 ~4 min read  •  Source: AlmaLinux/RHEL advisory ALSA-2024:9413 Related CVEs: CVE-2023-27349 CVE-2023-44431 CVE-2023-45866 CVE-2023-50229 CVE-2023-50230 CVE-2023-51580 CVE-2023-51589 CVE-2023-51592  +2 more Upstream summary: The bluez packages contain the following utilities for use in Bluetooth applications: hcitool, hciattach, hciconfig, bluetoothd, […]

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Amazon Linux 2 — util-linux — multiple vulnerabilities (3 CVEs) — patch and remediation guide — diagnosis and fix on Amazon Linux 2

Amazon Linux 2 — util-linux — multiple vulnerabilities (3 CVEs) — patch and remediation guide

🟡 Medium   ⏱ 10–30 min  Last verified: 25 May 2026 Affected versions: Amazon Linux 2 📖 ~4 min read  •  Source: Amazon Linux advisory ALAS2-2022-1878 Related CVEs: CVE-2018-7738 CVE-2022-0563 CVE-2021-37600 Upstream summary: A command injection flaw was found in the way util-linux implements umount autocompletion in Bash. An attacker with the ability to mount […]

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Oracle Linux 8 — java-11-openjdk — vulnerability — patch and remediation guide — diagnosis and fix on Oracle Linux 8

Oracle Linux 8 — java-11-openjdk — vulnerability — patch and remediation guide (ELSA-2022-1442)

🟠 High   ⏱ 15–60 min  Last verified: 21 April 2023 Affected versions: Oracle Linux 8 📖 ~4 min read  •  Source: ELSA advisory ELSA-2022-1442 Related CVEs: CVE-2022-21496 CVE-2022-21434 CVE-2022-21426 CVE-2022-21443 CVE-2022-21476 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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Oracle Linux 9 — golang — vulnerability — patch and remediation guide — diagnosis and fix on Oracle Linux 9

Oracle Linux 9 — golang — vulnerability — patch and remediation guide (ELSA-2024-1963)

🟠 High   ⏱ 15–60 min  Last verified: 21 April 2023 Affected versions: Oracle Linux 9 📖 ~4 min read  •  Source: ELSA advisory ELSA-2024-1963 Related CVEs: CVE-2023-45288 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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Windows Server 2022 — KB5025288 — multiple vulnerabilities (20 CVEs) — patch and remediation guide — diagnosis and fix on Windows Server 2022

Windows Server 2022 — KB5025288 — multiple vulnerabilities (20 CVEs) — patch and remediation guide

🔴 Critical   ⏱ 15–90 min  Last verified: 25 May 2026 Affected versions: Windows Server 2022 📖 ~4 min read  •  Source: Microsoft KB5025288 • MSRC update-guide entry Related CVEs: CVE-2023-21554 CVE-2023-28219 CVE-2023-28220 CVE-2023-28231 CVE-2023-28232 CVE-2023-28250 CVE-2023-21769 CVE-2023-21729  +12 more Affected components: Windows Server 2022 Table of contents Symptom & Impact Environment & Reproduction Root […]

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