Logging Monitoring

How to Install Lighttpd on Oracle Linux 9 — step-by-step Oracle Linux 9 tutorial on Progressive Robot

How to Install Lighttpd on Oracle Linux 9

Introduction This tutorial demonstrates how to Install Lighttpd on Oracle Linux 9 on Oracle Linux 9. It is written for administrators who want a repeatable, well-explained walkthrough that goes beyond a bare command list and explains each configuration choice. Every command is tested against a freshly registered Oracle Linux 9 system with the default AppStream […]

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Ubuntu 18.04 — percona-xtrabackup — vulnerability — patch and remediation guide — diagnosis and fix on Ubuntu 18.04

Ubuntu 18.04 — percona-xtrabackup — vulnerability — patch and remediation guide

🟢 Low   ⏱ 5–15 min  Last verified: 22 March 2023 Affected versions: Ubuntu 18.04 (bionic) 📖 ~4 min read  •  Source: Ubuntu Security Notice USN-6745-1 Related CVEs: CVE-2022-25834 Upstream summary: It was discovered that in Percona XtraBackup, a local crafted filename could trigger arbitrary code execution. Table of contents Symptom & Impact Environment & […]

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Ubuntu 18.04 — heimdal — multiple vulnerabilities (10 CVEs) — patch and remediation guide — diagnosis and fix on Ubuntu 18.04

Ubuntu 18.04 — heimdal — multiple vulnerabilities (10 CVEs) — patch and remediation guide

🟠 High   ⏱ 15–60 min  Last verified: 22 March 2023 Affected versions: Ubuntu 18.04 (bionic) 📖 ~4 min read  •  Source: Ubuntu Security Notice USN-5849-1 Related CVEs: CVE-2022-45142 CVE-2021-44758 CVE-2022-3437 CVE-2022-42898 CVE-2022-44640 CVE-2022-41916 CVE-2018-16860 CVE-2019-12098  +2 more Upstream summary: Helmut Grohne discovered that Heimdal GSSAPI incorrectly handled logical conditions that are related to memory […]

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Common Problems 112997

Windows Server 2016 — WSUS metadata corruption prevents clients from downloading approved updates — Fix & Prevention

🟠 High   ⏱ 5–30 min  Last verified: 22 March 2023 Affected versions: Windows Server 2016 📖 ~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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Ubuntu 16.04 — ntfs-3g — multiple vulnerabilities (13 CVEs) — patch and remediation guide — diagnosis and fix on Ubuntu 16.04

Ubuntu 16.04 — ntfs-3g — multiple vulnerabilities (13 CVEs) — patch and remediation guide

🟠 High   ⏱ 15–60 min  Last verified: 22 March 2023 Affected versions: Ubuntu 16.04 (xenial) 📖 ~4 min read  •  Source: Ubuntu Security Notice USN-5711-2 Related CVEs: CVE-2022-40284 CVE-2022-30783 CVE-2022-30784 CVE-2022-30785 CVE-2022-30786 CVE-2022-30787 CVE-2022-30788 CVE-2022-30789  +5 more Upstream summary: USN-5711-1 fixed a vulnerability in NTFS-3G. This update provides the corresponding update for Ubuntu 14.04 […]

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Common Problems 111683

Windows Server 2022 – DHCP authorization lost in Active Directory – Fix & Prevention

🟠 High   ⏱ 5–30 min  Last verified: 22 March 2023 Affected versions: Windows Server 2022 📖 ~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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CentOS Stream 9 — yajl — multiple vulnerabilities (2 CVEs) — patch and remediation guide — diagnosis and fix on CentOS Stream 9

CentOS Stream 9 — yajl — multiple vulnerabilities (2 CVEs) — patch and remediation guide

🟡 Medium   ⏱ 10–30 min  Last verified: 22 March 2023 Affected versions: CentOS Stream 9 📖 ~4 min read  •  Source: AlmaLinux/RHEL advisory ALSA-2023:6551 Related CVEs: CVE-2023-33460 CVE-2022-24795 Upstream summary: Yet Another JSON Library (YAJL) is a small event-driven (SAX-style) JSON parser written in ANSI C, and a small validating JSON generator. Security Fix(es): […]

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How to Configure BGP Routing with RRAS on Windows Server 2016 — step-by-step Windows Server 2016 tutorial on Progressive Robot

How to Configure BGP Routing with RRAS on Windows Server 2016

How to Set Up BGP Routing on Windows Server 2016 Border Gateway Protocol (BGP) is the routing protocol that powers the internet. It is a path-vector protocol used to exchange routing information between autonomous systems (AS). Windows Server 2016 includes a software-based BGP implementation as part of the Remote Access role, which can be used […]

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Oracle Linux 8 — prometheus-jmx-exporter — vulnerability — patch and remediation guide — diagnosis and fix on Oracle Linux 8

Oracle Linux 8 — prometheus-jmx-exporter — vulnerability — patch and remediation guide (ELSA-2022-6820)

🟡 Medium   ⏱ 10–30 min  Last verified: 22 March 2023 Affected versions: Oracle Linux 8 📖 ~4 min read  •  Source: ELSA advisory ELSA-2022-6820 Related CVEs: CVE-2022-25857 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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Oracle Linux 9 — 15 — vulnerability — patch and remediation guide — diagnosis and fix on Oracle Linux 9

Oracle Linux 9 — 15 — vulnerability — patch and remediation guide (ELSA-2023-4327)

🟡 Medium   ⏱ 10–30 min  Last verified: 22 March 2023 Affected versions: Oracle Linux 9 📖 ~4 min read  •  Source: ELSA advisory ELSA-2023-4327 Related CVEs: CVE-2023-2455 CVE-2023-2454 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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