April 2020 - Page 10 of 66

Common Problems 115107

Kdump Service Enabled but Crash Dumps Not Generated

🟡 Medium   ⏱ 5–30 min  Last verified: 20 May 2026 📖 ~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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Arch Linux — pam-krb5 — vulnerability — patch and remediation guide — diagnosis and fix on Arch Linux

Arch Linux — pam-krb5 — vulnerability — patch and remediation guide

🟡 Medium   ⏱ 10–30 min  Last verified: 25 May 2026 Affected versions: Arch Linux (rolling release) 📖 ~4 min read  •  Source: Arch ASA ASA-202004-5 Related CVEs: CVE-2020-10595 Upstream summary: Type: arbitrary code execution. Status: Fixed. Affected: 4.8-1. Fixed in: 4.9-1. Group: AVG-1119. Table of contents Symptom & Impact Environment & Reproduction Root Cause […]

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Common Problems 113577

Windows Server 2012 R2 — Defender Platform Update Fails and Signatures Stop Updating — Fix & Prevention

🟠 High   ⏱ 5–30 min  Last verified: 18 May 2026 Affected versions: Windows Server 2012 R2 📖 ~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 […]

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How to Configure Simultaneous Multithreading (SMT) on IBM AIX 7.1 — step-by-step IBM AIX 7.1 tutorial on Progressive Robot

How to Configure Simultaneous Multithreading (SMT) on IBM AIX 7.1

Introduction IBM AIX 7.1 is the latest release of IBM’s enterprise-grade UNIX operating system, running on IBM Power Systems hardware. Known for its reliability, security, and performance in mission-critical environments, AIX 7.1 introduces enhanced virtualization, security hardening, and cloud integration features. This guide covers how to configure simultaneous multithreading (smt) on ibm aix 7.1 on […]

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How to Set Up Port Knocking on Debian 10 — step-by-step Debian 10 tutorial on Progressive Robot

How to Set Up Port Knocking on Debian 10

Introduction Deploying set up port knocking on debian 10 on a Debian 10 Buster machine is straightforward thanks to Debian’s policy-compliant packaging. Unlike rpm-based distributions, Debian stores configuration helpers in /etc/default/, uses update-rc.d for older init scripts, and provides dpkg-reconfigure for interactive package configuration. This tutorial stays on the systemd path throughout. Prerequisites Ensure Debian […]

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How to Use cron and at Scheduling on IBM AIX 7.2 — step-by-step IBM AIX 7.2 tutorial on Progressive Robot

How to Use cron and at Scheduling on IBM AIX 7.2

Introduction IBM AIX 7.2 is the latest release of IBM’s enterprise-grade UNIX operating system, running on IBM Power Systems hardware. Known for its reliability, security, and performance in mission-critical environments, AIX 7.2 introduces enhanced virtualization, security hardening, and cloud integration features. This guide covers how to use cron and at scheduling on ibm aix 7.2 […]

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FreeBSD 12 — libraw — multiple vulnerabilities (11 CVEs) — patch and remediation guide — diagnosis and fix on FreeBSD 12

FreeBSD 12 — libraw — multiple vulnerabilities (11 CVEs) — patch and remediation guide

🟠 High   ⏱ 15–60 min  Last verified: 25 May 2026 Affected versions: FreeBSD 12 📖 ~4 min read  •  Source: FreeBSD VuXML VuXML topic: libraw — multiple DoS vulnerabilities Related CVEs: CVE-2015-3885 CVE-2015-8366 CVE-2015-8367 CVE-2017-14265 CVE-2017-14348 CVE-2017-14608 CVE-2017-16909 CVE-2017-16910  +3 more Upstream summary: Secunia Research reports: CVE-2018-5800: An off-by-one error within the "LibRaw::kodak_ycbcr_load_raw()" function […]

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Como Instalar o Nginx no Ubuntu 20.04 [Quickstart] — step-by-step Linux tutorial on Progressive Robot

Como Instalar o Nginx no Ubuntu 20.04 [Quickstart]

O Nginx é um dos servidores Web mais populares no mundo e é responsável por hospedar alguns dos sites de maior tráfego na Internet. Ele é mais amigável do que o Apache em termos de recursos na maioria dos casos e pode ser usado como um servidor Web ou como proxy…

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FreeBSD 12 — strongswan — multiple vulnerabilities (20 CVEs) — patch and remediation guide — diagnosis and fix on FreeBSD 12

FreeBSD 12 — strongswan — multiple vulnerabilities (20 CVEs) — patch and remediation guide

🟠 High   ⏱ 15–60 min  Last verified: 25 May 2026 Affected versions: FreeBSD 12 📖 ~4 min read  •  Source: FreeBSD VuXML VuXML topic: strongSwan — Heap-based buffer overflow in eap-mschapv2 plugin due to improper handling of failure request packets Related CVEs: CVE-2013-2944 CVE-2013-5018 CVE-2013-6075 CVE-2013-6076 CVE-2014-2338 CVE-2015-3991 CVE-2015-4171 CVE-2015-8023  +12 more Upstream summary: […]

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