Logging Monitoring

openSUSE Tumbleweed — gnugk — vulnerability — patch and remediation guide — diagnosis and fix on openSUSE Tumbleweed

openSUSE Tumbleweed — gnugk — vulnerability — patch and remediation guide

🟡 Medium   ⏱ 10–30 min  Last verified: 25 May 2026 Affected versions: openSUSE Tumbleweed 📖 ~4 min read  •  Source: SUSE security advisory (see also SUSE bugzilla) Related CVEs: CVE-2012-3534 Upstream summary: GNU Gatekeeper before 3.1 does not limit the number of connections to the status port, which allows remote attackers to cause a […]

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How to Set Up the Elastic Stack ELK on Debian 10 — step-by-step Debian 10 tutorial on Progressive Robot

How to Set Up the Elastic Stack ELK on Debian 10

Introduction Debian 10 Buster is built around the ethos of stability and free software. Setting up set up the elastic stack elk on debian 10 on Buster leverages the same proven Debian packaging system that powers millions of servers worldwide, while benefiting from the latest upstream releases included in the Buster freeze. Follow each step […]

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Ubuntu 16.04 — grub2 — multiple vulnerabilities (10 CVEs) — patch and remediation guide — diagnosis and fix on Ubuntu 16.04

Ubuntu 16.04 — grub2 — multiple vulnerabilities (10 CVEs) — patch and remediation guide

🟠 High   ⏱ 15–60 min  Last verified: 30 June 2020 Affected versions: Ubuntu 16.04 (xenial) 📖 ~4 min read  •  Source: Ubuntu Security Notice USN-4432-2 Related CVEs: https://launchpad.net/bugs/1889556 https://wiki.ubuntu.com/SecurityTeam/KnowledgeBase/GRUB2SecureBootBypass CVE-2020-10713 CVE-2020-14308 CVE-2020-14309 CVE-2020-14310 CVE-2020-14311 CVE-2020-15705  +2 more Upstream summary: USN-4432-1 fixed vulnerabilities in GRUB2 affecting Secure Boot environments. Unfortunately, the update introduced regressions for […]

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Alpine Linux edge — kodi — vulnerability — patch and remediation guide — diagnosis and fix on Alpine Linux edge

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

🟡 Medium   ⏱ 10–30 min  Last verified: 25 May 2026 Affected versions: Alpine Linux edge / fixed in 18.2-r0 📖 ~4 min read  •  Source: Alpine secdb entry — kodi 18.2-r0 Related CVEs: CVE-2018-8831 Upstream summary: Alpine community repository for vedge ships kodi 18.2-r0 which addresses CVE-2018-8831. Table of contents Symptom & Impact Environment […]

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SLES 15 — python2-rtslib-fb — vulnerability — patch and remediation guide — diagnosis and fix on SLES 15

SLES 15 — python2-rtslib-fb — vulnerability — patch and remediation guide

🟡 Medium   ⏱ 10–30 min  Last verified: 30 June 2020 Affected versions: SLES 15 📖 ~4 min read  •  Source: SUSE advisory SUSE-SU-2020:2109-1 (see also SUSE bugzilla) Related CVEs: CVE-2020-14019 Upstream summary: Open-iSCSI rtslib-fb through 2.1.72 has weak permissions for /etc/target/saveconfig.json because shutil.copyfile (instead of shutil.copy) is used, and thus permissions are not preserved. […]

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Debian 10 — vlc — multiple vulnerabilities (4 CVEs) — patch and remediation guide — diagnosis and fix on Debian 10

Debian 10 — vlc — multiple vulnerabilities (4 CVEs) — patch and remediation guide

🟡 Medium   ⏱ 10–30 min  Last verified: 30 June 2020 Affected versions: Debian 10 (buster) 📖 ~4 min read  •  Source: Debian Security Tracker Related CVEs: CVE-2019-13602 CVE-2020-6071 CVE-2020-13428 CVE-2020-26664 Table of contents Symptom & Impact Environment & Reproduction Root Cause Analysis Quick Triage Step-by-Step Diagnosis Solution – Primary Fix Solution – Alternative Approaches […]

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Arch Linux — nsd — vulnerability — patch and remediation guide — diagnosis and fix on Arch Linux

Arch Linux — nsd — vulnerability — patch and remediation guide

🟢 Low   ⏱ 5–15 min  Last verified: 25 May 2026 Affected versions: Arch Linux (rolling release) 📖 ~4 min read  •  Source: Arch ASA ASA-202012-18 Related CVEs: CVE-2020-28935 Upstream summary: Type: denial of service. Status: Fixed. Affected: 4.3.3-1. Fixed in: 4.3.4-1. Group: AVG-1327. Table of contents Symptom & Impact Environment & Reproduction Root Cause […]

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How to Set Up DHCP Audit Logging on Windows Server 2019 — step-by-step Windows Server 2019 tutorial on Progressive Robot

How to Set Up DHCP Audit Logging on Windows Server 2019

Introduction to DHCP Audit Logging on Windows Server 2019 DHCP Audit Logging records every IP address assignment, renewal, release, and denial made by the DHCP server. This log is invaluable for network troubleshooting (tracking which machine had a given IP at a specific time), security investigation (identifying rogue devices or tracking when an infected machine […]

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Ubuntu 20.04 — storebackup — vulnerability — patch and remediation guide — diagnosis and fix on Ubuntu 20.04

Ubuntu 20.04 — storebackup — vulnerability — patch and remediation guide

🟢 Low   ⏱ 5–15 min  Last verified: 29 June 2020 Affected versions: Ubuntu 20.04 (focal) 📖 ~4 min read  •  Source: Ubuntu Security Notice USN-4508-1 Related CVEs: CVE-2020-7040 Upstream summary: It was discovered that StoreBackup did not properly manage lock files. A local attacker could use this issue to cause a denial of service […]

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Common Problems 121195

Debian 10 Cron Job Not Running at Scheduled Time

🟡 Medium   ⏱ 5–30 min  Last verified: 29 June 2020 Affected versions: Debian 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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CHAT