Linux

Alpine Linux 3.20 — bash — vulnerability — patch and remediation guide — diagnosis and fix on Alpine Linux 3.20

Alpine Linux 3.20 — bash — vulnerability — patch and remediation guide

🟡 Medium   ⏱ 10–30 min  Last verified: 25 May 2026 Affected versions: Alpine Linux 3.20 / fixed in 4.4.12-r1 📖 ~4 min read  •  Source: Alpine secdb entry — bash 4.4.12-r1 Related CVEs: CVE-2016-0634 Upstream summary: Alpine main repository for vv3.20 ships bash 4.4.12-r1 which addresses CVE-2016-0634. Table of contents Symptom & Impact Environment […]

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Alpine Linux 3.20 — alertmanager — vulnerability — patch and remediation guide — diagnosis and fix on Alpine Linux 3.20

Alpine Linux 3.20 — alertmanager — vulnerability — patch and remediation guide

🟡 Medium   ⏱ 10–30 min  Last verified: 25 May 2026 Affected versions: Alpine Linux 3.20 / fixed in 0.26.0-r0 📖 ~4 min read  •  Source: Alpine secdb entry — alertmanager 0.26.0-r0 Related CVEs: CVE-2023-40577 Upstream summary: Alpine community repository for vv3.20 ships alertmanager 0.26.0-r0 which addresses CVE-2023-40577. Table of contents Symptom & Impact Environment […]

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Ubuntu 20.04 — waitress — multiple vulnerabilities (3 CVEs) — patch and remediation guide — diagnosis and fix on Ubuntu 20.04

Ubuntu 20.04 — waitress — multiple vulnerabilities (3 CVEs) — patch and remediation guide

🟡 Medium   ⏱ 10–30 min  Last verified: 29 December 2024 Affected versions: Ubuntu 20.04 (focal) 📖 ~4 min read  •  Source: Ubuntu Security Notice USN-7115-1 Related CVEs: CVE-2024-49768 CVE-2024-49769 CVE-2022-24761 Upstream summary: It was discovered that Waitress could process follow up requests when receiving a specially crafted message. An attacker could use this issue […]

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Ubuntu 14.04 — htmldoc — multiple vulnerabilities (20 CVEs) — patch and remediation guide — diagnosis and fix on Ubuntu 14.04

Ubuntu 14.04 — htmldoc — multiple vulnerabilities (20 CVEs) — patch and remediation guide

🟠 High   ⏱ 15–60 min  Last verified: 29 December 2024 Affected versions: Ubuntu 14.04 (trusty) 📖 ~4 min read  •  Source: Ubuntu Security Notice USN-7225-1 Related CVEs: CVE-2022-0137 CVE-2022-0534 CVE-2022-24191 CVE-2022-27114 CVE-2022-28085 CVE-2022-34033 CVE-2022-34035 CVE-2024-45508  +12 more Upstream summary: It was discovered that HTMLDOC incorrectly handled memory in the image_set_mask, git_read_lzw, write_header and write_node […]

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openSUSE Leap 15.5 — ruby2.5-rubygem-actionmailer — vulnerability — patch and remediation guide — diagnosis and fix on openSUSE Leap 15.5

openSUSE Leap 15.5 — ruby2.5-rubygem-actionmailer — vulnerability — patch and remediation guide

🟡 Medium   ⏱ 10–30 min  Last verified: 25 May 2026 Affected versions: openSUSE Leap 15.5 📖 ~4 min read  •  Source: SUSE advisory openSUSE-SU-2024:14471-1 (see also SUSE bugzilla) Related CVEs: CVE-2024-47889 Upstream summary: Action Mailer is a framework for designing email service layers. Starting in version 3.0.0 and prior to versions 6.1.7.9, 7.0.8.5, 7.1.4.1, […]

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Oracle Linux 9 — dotnet7.0 security, bug fix, and — enhancement update — new behaviour and fixes — diagnosis and fix on Oracle Linux 9

Oracle Linux 9 — dotnet7.0 security, bug fix, and — enhancement update — new behaviour and fixes (ELSA-2022-8434)

🟡 Medium   ⏱ 10–30 min  Last verified: 28 December 2024 Affected versions: Oracle Linux 9 📖 ~4 min read  •  Source: ELSA advisory ELSA-2022-8434 Related CVEs: CVE-2022-41032 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 127212

CentOS Stream 10 – Common Problem 150 – Diagnosis and Fix

🟠 High   ⏱ 5–30 min  Last verified: 28 December 2024 Affected versions: CentOS Stream 10 📖 ~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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Common Problems 120136

Debian 12 Postfix Queue Backlog Due to DNSBL Timeout

🟡 Medium   ⏱ 5–30 min  Last verified: 28 December 2024 Affected versions: Debian 12 📖 ~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 Install WooCommerce on CentOS Stream 10 — step-by-step CentOS Stream 10 tutorial on Progressive Robot

How to Install WooCommerce on CentOS Stream 10

Introduction How to Install WooCommerce on CentOS Stream 10 on CentOS Stream 10 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 reproducible […]

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Common Problems 118104

Ubuntu 18.04 SSH connection refused after reboot

🟡 Medium   ⏱ 5–30 min  Last verified: 28 December 2024 📖 ~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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