Logging Monitoring

Amazon Linux 2023 — libwebp — multiple vulnerabilities (2 CVEs) — patch and remediation guide — diagnosis and fix on Amazon Linux 2023

Amazon Linux 2023 — libwebp — multiple vulnerabilities (2 CVEs) — patch and remediation guide

🟠 High   ⏱ 15–60 min  Last verified: 25 May 2026 Affected versions: Amazon Linux 2023 📖 ~4 min read  •  Source: Amazon Linux advisory ALAS2023-2023-355 Related CVEs: CVE-2023-4863 CVE-2023-1999 Upstream summary: Heap buffer overflow in WebP in Google Chrome prior to 116.0.5845.187 allowed a remote attacker to perform an out of bounds memory write […]

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IBM AIX 7.1 — CVE-2023-43021 — vulnerability — patch and remediation guide — diagnosis and fix on IBM AIX 7.1

IBM AIX 7.1 — CVE-2023-43021 — vulnerability — patch and remediation guide

🟡 Medium   ⏱ 15–45 min  Last verified: 15 November 2023 Affected versions: IBM AIX 7.1 📖 ~4 min read  •  Source: NVD CVE-2023-43021, IBM Support Bulletin CVE: CVE-2023-43021 NVD summary: IBM InfoSphere Information Server 11.7 could allow a remote attacker to obtain sensitive information when a detailed technical error message is returned in the […]

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Debian 12 — imlib2 — multiple vulnerabilities (20 CVEs) — patch and remediation guide — diagnosis and fix on Debian 12

Debian 12 — imlib2 — multiple vulnerabilities (20 CVEs) — patch and remediation guide

🟠 High   ⏱ 15–60 min  Last verified: 15 November 2023 Affected versions: Debian 12 (bookworm) 📖 ~4 min read  •  Source: Debian Security Tracker Related CVEs: CVE-2004-0802 CVE-2004-1026 CVE-2006-4806 CVE-2006-4807 CVE-2006-4808 CVE-2006-4809 CVE-2008-2426 CVE-2008-5187  +12 more Upstream summary: Buffer overflow in the BMP loader in imlib2 before 1.1.2 allows remote attackers to execute arbitrary […]

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NetBSD 9.4 — pngcheck — multiple vulnerabilities (2 CVEs) — patch and remediation guide — diagnosis and fix on NetBSD 9.4

NetBSD 9.4 — pngcheck — multiple vulnerabilities (2 CVEs) — patch and remediation guide

🟡 Medium   ⏱ 10–30 min  Last verified: 25 May 2026 Affected versions: NetBSD 9.4 📖 ~4 min read  •  Source: pkgsrc audit-packages entry Related CVEs: CVE-2020-35511 CVE-2020-27818 Upstream summary: pkgsrc audit-packages flagged pngcheck<3.0.3 for vulnerability class 'buffer-overflow'. Reference: https://nvd.nist.gov/vuln/detail/CVE-2020-35511 Table of contents Symptom & Impact Environment & Reproduction Root Cause Analysis Quick Triage Step-by-Step […]

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Debian 12 — wget — multiple vulnerabilities (20 CVEs) — patch and remediation guide — diagnosis and fix on Debian 12

Debian 12 — wget — multiple vulnerabilities (20 CVEs) — patch and remediation guide

🟠 High   ⏱ 15–60 min  Last verified: 15 November 2023 Affected versions: Debian 12 (bookworm) 📖 ~4 min read  •  Source: Debian Security Tracker Related CVEs: CVE-2002-1344 CVE-2002-1565 CVE-2004-1487 CVE-2004-1488 CVE-2004-2014 CVE-2005-3185 CVE-2006-6719 CVE-2009-3490  +12 more Upstream summary: Directory traversal vulnerability in wget before 1.8.2-4 allows a remote FTP server to create or overwrite […]

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Common Problems 116935

Ubuntu 22.04 LTS – UFW blocks required inbound ports – Fix & Prevention

🟠 High   ⏱ 5–30 min  Last verified: 15 November 2023 Affected versions: Ubuntu 22.04 LTS 📖 ~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 Nginx as a TCP/UDP Load Balancer on Debian 12 — step-by-step Debian 12 tutorial on Progressive Robot

How to Configure Nginx as a TCP/UDP Load Balancer on Debian 12 (DEBIAN-12-2)

Introduction How to Configure Nginx as a TCP/UDP Load Balancer on Debian 12 is a fundamental operation for any administrator maintaining a Debian 12 Bookworm server. Debian 12 Bookworm 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 […]

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NetBSD 9.4 — oracle — vulnerability — patch and remediation guide — diagnosis and fix on NetBSD 9.4

NetBSD 9.4 — oracle — vulnerability — patch and remediation guide

🟡 Medium   ⏱ 10–30 min  Last verified: 25 May 2026 Affected versions: NetBSD 9.4 📖 ~4 min read  •  Source: pkgsrc audit-packages entry Upstream summary: pkgsrc audit-packages flagged oracle-{jdk,jre}-[0-9]* for vulnerability class 'multiple-vulnerabilities'. Reference: https://www.oracle.com/technetwork/security-advisory/cpuoct2016-2881722.html#AppendixJAVA Table of contents Symptom & Impact Environment & Reproduction Root Cause Analysis Quick Triage Step-by-Step Diagnosis Solution – Primary […]

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Debian 12 — python3.11 — multiple vulnerabilities (20 CVEs) — patch and remediation guide — diagnosis and fix on Debian 12

Debian 12 — python3.11 — multiple vulnerabilities (20 CVEs) — patch and remediation guide

🟠 High   ⏱ 15–60 min  Last verified: 15 November 2023 Affected versions: Debian 12 (bookworm) 📖 ~4 min read  •  Source: Debian Security Tracker Related CVEs: CVE-2020-10735 CVE-2021-28861 CVE-2022-42919 CVE-2022-45061 CVE-2023-24329 CVE-2023-27043 CVE-2023-40217 CVE-2023-41105  +12 more Upstream summary: A flaw was found in python. In algorithms with quadratic time complexity using non-binary bases, when […]

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Debian 12 — node-thenify — vulnerability — patch and remediation guide — diagnosis and fix on Debian 12

Debian 12 — node-thenify — vulnerability — patch and remediation guide

🟢 Low   ⏱ 5–15 min  Last verified: 15 November 2023 Affected versions: Debian 12 (bookworm) 📖 ~4 min read  •  Source: Debian Security Tracker Related CVEs: CVE-2020-7677 Upstream summary: This affects the package thenify before 3.3.1. The name argument provided to the package can be controlled by users without any sanitization, and this is […]

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