Package Management

How to Set Up Hyper-V Nested Virtualisation on Windows Server 2019 — step-by-step Windows Server 2019 tutorial on Progressive Robot

How to Set Up Hyper-V Nested Virtualisation on Windows Server 2019

How to Set Up Hyper-V Nested Virtualisation on Windows Server 2019 Nested virtualisation in Windows Server 2019 Hyper-V allows a virtual machine to run its own Hyper-V hypervisor and create guest VMs inside itself. This capability is invaluable for testing Hyper-V configurations without dedicated hardware, setting up lab environments, training scenarios, and running containerisation workloads […]

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FreeBSD 12 — pam_ldap — vulnerability — patch and remediation guide — diagnosis and fix on FreeBSD 12

FreeBSD 12 — pam_ldap — vulnerability — patch and remediation guide

🟢 Low   ⏱ 5–15 min  Last verified: 11 March 2020 Affected versions: FreeBSD 12 📖 ~4 min read  •  Source: FreeBSD VuXML VuXML topic: pam_ldap — authentication bypass vulnerability Related CVEs: CVE-2005-2641 Upstream summary: Luke Howard reports: If a pam_ldap client authenticates against an LDAP server that returns a passwordPolicyResponse control, but omits the […]

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Oracle Linux 8 — libcroco — vulnerability — patch and remediation guide — diagnosis and fix on Oracle Linux 8

Oracle Linux 8 — libcroco — vulnerability — patch and remediation guide (ELSA-2020-3654)

🟡 Medium   ⏱ 10–30 min  Last verified: 11 March 2020 Affected versions: Oracle Linux 8 📖 ~4 min read  •  Source: ELSA advisory ELSA-2020-3654 Related CVEs: CVE-2020-12825 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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Gentoo Linux — net-libs/pcre2 — vulnerability — patch and remediation guide — diagnosis and fix on Gentoo Linux

Gentoo Linux — net-libs/pcre2 — vulnerability — patch and remediation guide

🟡 Medium   ⏱ 10–30 min  Last verified: 25 May 2026 Affected versions: Gentoo Linux 📖 ~4 min read  •  Source: Gentoo GLSA GLSA-202006-16 Related CVEs: CVE-2019-20454 Upstream summary: PCRE2 has a flaw when handling JIT-compiled regex using the X pattern. Table of contents Symptom & Impact Environment & Reproduction Root Cause Analysis Quick Triage […]

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Debian 9 — mailman — multiple vulnerabilities (3 CVEs) — patch and remediation guide — diagnosis and fix on Debian 9

Debian 9 — mailman — multiple vulnerabilities (3 CVEs) — patch and remediation guide

🟡 Medium   ⏱ 10–30 min  Last verified: 11 March 2020 Affected versions: Debian 9 (stretch) 📖 ~4 min read  •  Source: Debian Security Tracker Related CVEs: CVE-2018-0618 CVE-2018-5950 CVE-2020-12137 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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Common Problems 114921

RHEL 8 SELinux Denying httpd Access to Custom Content Path

🟡 Medium   ⏱ 5–30 min  Last verified: 10 March 2020 📖 ~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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FreeBSD 12 — pyblosxom — security advisory — patch and remediation guide — diagnosis and fix on FreeBSD 12

FreeBSD 12 — pyblosxom — security advisory — patch and remediation guide

🟢 Low   ⏱ 5–15 min  Last verified: 10 March 2020 Affected versions: FreeBSD 12 📖 ~4 min read  •  Source: FreeBSD VuXML VuXML topic: pyblosxom — atom flavor multiple XML injection vulnerabilities Upstream summary: Security Focus reports: PyBlosxom is prone to multiple XML-injection vulnerabilities because the application fails to properly sanitize user-supplied input before […]

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How to Configure Docker with TLS Authentication on Debian 10 — step-by-step Debian 10 tutorial on Progressive Robot

How to Configure Docker with TLS Authentication on Debian 10

Introduction Deploying configure docker with tls authentication 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 Before […]

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FreeBSD 12 — rubygem-nokogiri — multiple vulnerabilities (2 CVEs) — patch and remediation guide — diagnosis and fix on FreeBSD 12

FreeBSD 12 — rubygem-nokogiri — multiple vulnerabilities (2 CVEs) — patch and remediation guide

🟢 Low   ⏱ 5–15 min  Last verified: 10 March 2020 Affected versions: FreeBSD 12 📖 ~4 min read  •  Source: FreeBSD VuXML VuXML topic: nokogiri — Security vulnerability Related CVEs: CVE-2019-5477 CVE-2020-26247 Upstream summary: Nokogiri reports: In Nokogiri versions <= 1.11.0.rc3, XML Schemas parsed by Nokogiri::XML::Schema were trusted by default, allowing external resources to […]

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