Logging Monitoring

Oracle Linux 9 — curl — vulnerability — patch and remediation guide — diagnosis and fix on Oracle Linux 9

Oracle Linux 9 — curl — vulnerability — patch and remediation guide (ELSA-2023-2650)

🟡 Medium   ⏱ 10–30 min  Last verified: 6 August 2023 Affected versions: Oracle Linux 9 📖 ~4 min read  •  Source: ELSA advisory ELSA-2023-2650 Related CVEs: CVE-2023-27535 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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NetBSD 9.4 — wayland — vulnerability — patch and remediation guide — diagnosis and fix on NetBSD 9.4

NetBSD 9.4 — wayland — vulnerability — patch and remediation guide

🟠 High   ⏱ 15–60 min  Last verified: 25 May 2026 Affected versions: NetBSD 9.4 📖 ~4 min read  •  Source: pkgsrc audit-packages entry Related CVEs: CVE-2021-3782 Upstream summary: pkgsrc audit-packages flagged wayland<1.20.91 for vulnerability class 'use-after-free'. Reference: https://nvd.nist.gov/vuln/detail/CVE-2021-3782 Table of contents Symptom & Impact Environment & Reproduction Root Cause Analysis Quick Triage Step-by-Step Diagnosis […]

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

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

🟠 High   ⏱ 15–60 min  Last verified: 6 August 2023 Affected versions: Debian 12 (bookworm) 📖 ~4 min read  •  Source: Debian Security Tracker Related CVEs: CVE-1999-0710 CVE-2002-0713 CVE-2002-0714 CVE-2002-0715 CVE-2002-0916 CVE-2004-0189 CVE-2004-0541 CVE-2004-0832  +12 more Upstream summary: The Squid package in Red Hat Linux 5.2 and 6.0, and other distributions, installs cachemgr.cgi in […]

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How to Configure Alertmanager on Debian 12 — step-by-step Debian 12 tutorial on Progressive Robot

How to Configure Alertmanager on Debian 12

Introduction How to Configure Alertmanager 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 from Debian 12. This tutorial […]

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Alpine Linux 3.18 — podman — multiple vulnerabilities (10 CVEs) — patch and remediation guide — diagnosis and fix on Alpine Linux 3.18

Alpine Linux 3.18 — podman — multiple vulnerabilities (10 CVEs) — patch and remediation guide

🟠 High   ⏱ 15–60 min  Last verified: 25 May 2026 Affected versions: Alpine Linux 3.18 / fixed in 4.4.3-r0 📖 ~4 min read  •  Source: Alpine secdb entry — podman 4.4.3-r0 Related CVEs: CVE-2022-41723 CVE-2023-0778 CVE-2022-2989 CVE-2022-27649 CVE-2021-4024 CVE-2021-41190 CVE-2021-3602 CVE-2021-20199  +2 more Upstream summary: Alpine community repository for vv3.18 ships podman 4.4.3-r0 which […]

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Amazon Linux 2023 — protobuf-c — vulnerability — patch and remediation guide — diagnosis and fix on Amazon Linux 2023

Amazon Linux 2023 — protobuf-c — vulnerability — patch and remediation guide

🟢 Low   ⏱ 5–15 min  Last verified: 25 May 2026 Affected versions: Amazon Linux 2023 📖 ~4 min read  •  Source: Amazon Linux advisory ALAS2023-2023-086 Related CVEs: CVE-2022-33070 Upstream summary: A flaw was found in protobuf-c. The issue occurs due to an invalid arithmetic shift via the parse_tag_and_wiretype in the protobuf-c/protobuf-c.c function. This flaw […]

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

NetBSD 9.4 — jdom — vulnerability — patch and remediation guide

🟢 Low   ⏱ 5–15 min  Last verified: 25 May 2026 Affected versions: NetBSD 9.4 📖 ~4 min read  •  Source: pkgsrc audit-packages entry Related CVEs: CVE-2021-33813 Upstream summary: pkgsrc audit-packages flagged jdom-[0-9]* for vulnerability class 'denial-of-service'. Reference: https://nvd.nist.gov/vuln/detail/CVE-2021-33813 Table of contents Symptom & Impact Environment & Reproduction Root Cause Analysis Quick Triage Step-by-Step Diagnosis […]

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Debian 12 — tdom — multiple vulnerabilities (2 CVEs) — patch and remediation guide — diagnosis and fix on Debian 12

Debian 12 — tdom — multiple vulnerabilities (2 CVEs) — patch and remediation guide

🟢 Low   ⏱ 5–15 min  Last verified: 5 August 2023 Affected versions: Debian 12 (bookworm) 📖 ~4 min read  •  Source: Debian Security Tracker Related CVEs: CVE-2009-3560 CVE-2009-3720 Upstream summary: The big2_toUtf8 function in lib/xmltok.c in libexpat in Expat 2.0.1, as used in the XML-Twig module for Perl, allows context-dependent attackers to cause a […]

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How to Enable HTTP/2 in Nginx on Oracle Linux 9 — step-by-step Oracle Linux 9 tutorial on Progressive Robot

How to Enable HTTP/2 in Nginx on Oracle Linux 9

Introduction Setting up enable http/2 in nginx on oracle linux 9 on a Oracle Linux 9 server is a common task for system administrators, DevOps engineers, and site reliability engineers. This guide explains how to Enable HTTP/2 in Nginx on Oracle Linux 9, with all the commands you need, the SELinux and firewalld considerations to […]

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