Troubleshooting

How to Manage Users and Computers in Active Directory on Windows Server 2016 — step-by-step Windows Server 2016 tutorial on Progressive Robot

How to Manage Users and Computers in Active Directory on Windows Server 2016

How to Configure Windows Server 2016 Active Directory Users and Computers Active Directory Users and Computers (ADUC) is the primary management console for administering user accounts, computer accounts, groups, and other directory objects in Windows Server 2016. This Microsoft Management Console (MMC) snap-in is installed automatically on Domain Controllers and can also be installed on […]

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Oracle Linux 8 — squid:4 — vulnerability — patch and remediation guide — diagnosis and fix on Oracle Linux 8

Oracle Linux 8 — squid:4 — vulnerability — patch and remediation guide (ELSA-2019-2593)

🟠 High   ⏱ 15–60 min  Last verified: 31 January 2020 Affected versions: Oracle Linux 8 📖 ~4 min read  •  Source: ELSA advisory ELSA-2019-2593 Related CVEs: CVE-2019-12527 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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FreeBSD 12 — libXrandr — multiple vulnerabilities (20 CVEs) — patch and remediation guide — diagnosis and fix on FreeBSD 12

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

🟠 High   ⏱ 15–60 min  Last verified: 31 January 2020 Affected versions: FreeBSD 12 📖 ~4 min read  •  Source: FreeBSD VuXML VuXML topic: X.org libraries — multiple vulnerabilities Related CVEs: CVE-2013-1981 CVE-2013-1982 CVE-2013-1983 CVE-2013-1984 CVE-2013-1985 CVE-2013-1986 CVE-2013-1987 CVE-2013-1988  +12 more Upstream summary: Matthieu Herrb reports: Tobias Stoeckmann from the OpenBSD project has discovered […]

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Arch Linux — libvorbis — multiple vulnerabilities (4 CVEs) — patch and remediation guide — diagnosis and fix on Arch Linux

Arch Linux — libvorbis — multiple vulnerabilities (4 CVEs) — patch and remediation guide

🔴 Critical   ⏱ 15–90 min  Last verified: 25 May 2026 Affected versions: Arch Linux (rolling release) 📖 ~4 min read  •  Source: Arch ASA ASA-201803-12 Related CVEs: CVE-2018-5146 CVE-2017-14633 CVE-2017-14632 CVE-2017-11333 Upstream summary: Type: multiple issues. Status: Fixed. Affected: 1.3.5-1. Fixed in: 1.3.6-1. Group: AVG-367. Table of contents Symptom & Impact Environment & Reproduction […]

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How to Configure Network Interface Settings with nmcli on RHEL 7 — step-by-step RHEL 7 tutorial on Progressive Robot

How to Configure Network Interface Settings with nmcli on RHEL 7

How to Configure Network Interface Settings with nmcli on RHEL 7 Network configuration on RHEL 7 is managed by the NetworkManager service, and the primary command-line interface for NetworkManager is nmcli. Unlike directly editing /etc/sysconfig/network-scripts/ files — which still works but is error-prone — nmcli provides a structured, validated way to create, modify, and activate […]

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How to Configure SaltStack on Debian 10 — step-by-step Debian 10 tutorial on Progressive Robot

How to Configure SaltStack on Debian 10

Introduction Deploying configure saltstack 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 10 Buster […]

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openSUSE Tumbleweed — openexr — multiple vulnerabilities (2 CVEs) — patch and remediation guide — diagnosis and fix on openSUSE Tumbleweed

openSUSE Tumbleweed — openexr — multiple vulnerabilities (2 CVEs) — patch and remediation guide

🟡 Medium   ⏱ 10–30 min  Last verified: 25 May 2026 Affected versions: openSUSE Tumbleweed 📖 ~4 min read  •  Source: SUSE advisory SUSE-SR:2009:014 (see also SUSE bugzilla) Related CVEs: CVE-2009-1720 CVE-2009-1721 Upstream summary: Multiple integer overflows in OpenEXR 1.2.2 and 1.6.1 allow context-dependent attackers to cause a denial of service (application crash) or possibly […]

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FreeBSD 12 — php70-phar — multiple vulnerabilities (9 CVEs) — patch and remediation guide — diagnosis and fix on FreeBSD 12

FreeBSD 12 — php70-phar — multiple vulnerabilities (9 CVEs) — patch and remediation guide

🟡 Medium   ⏱ 10–30 min  Last verified: 30 January 2020 Affected versions: FreeBSD 12 📖 ~4 min read  •  Source: FreeBSD VuXML VuXML topic: php — multiple vulnerabilities Related CVEs: CVE-2015-8874 CVE-2016-5766 CVE-2016-5767 CVE-2016-5768 CVE-2016-5769 CVE-2016-5770 CVE-2016-5771 CVE-2016-5772  +1 more Upstream summary: The PHP Group reports: Please reference CVE/URL list for details Table of […]

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openSUSE Tumbleweed — log4net — multiple vulnerabilities (2 CVEs) — patch and remediation guide — diagnosis and fix on openSUSE Tumbleweed

openSUSE Tumbleweed — log4net — multiple vulnerabilities (2 CVEs) — 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-2018-1285 CVE-2006-0743 Upstream summary: Apache log4net versions before 2.0.10 do not disable XML external entities when parsing log4net configuration files. This allows for XXE-based attacks […]

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