Package Management

How to Configure Audit Subsystem on IBM AIX 7.2 — step-by-step IBM AIX 7.2 tutorial on Progressive Robot

How to Configure Audit Subsystem 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 configure audit subsystem on ibm aix 7.2 on IBM […]

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Alpine Linux edge — perl-app-cpanminus — vulnerability — patch and remediation guide — diagnosis and fix on Alpine Linux edge

Alpine Linux edge — perl-app-cpanminus — vulnerability — patch and remediation guide

🟡 Medium   ⏱ 10–30 min  Last verified: 25 May 2026 Affected versions: Alpine Linux edge / fixed in 1.7045-r0 📖 ~4 min read  •  Source: Alpine secdb entry — perl-app-cpanminus 1.7045-r0 Related CVEs: CVE-2020-16154 Upstream summary: Alpine community repository for vedge ships perl-app-cpanminus 1.7045-r0 which addresses CVE-2020-16154. Table of contents Symptom & Impact Environment […]

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Debian 9 — awl — vulnerability — patch and remediation guide — diagnosis and fix on Debian 9

Debian 9 — awl — vulnerability — patch and remediation guide

🟢 Low   ⏱ 5–15 min  Last verified: 1 September 2020 Affected versions: Debian 9 (stretch) 📖 ~4 min read  •  Source: Debian Security Tracker Related CVEs: CVE-2020-11728 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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openSUSE Tumbleweed — velocity — vulnerability — patch and remediation guide — diagnosis and fix on openSUSE Tumbleweed

openSUSE Tumbleweed — velocity — vulnerability — patch and remediation guide

🟠 High   ⏱ 15–60 min  Last verified: 25 May 2026 Affected versions: openSUSE Tumbleweed 📖 ~4 min read  •  Source: SUSE advisory openSUSE-SU-2021:0447-1 (see also SUSE bugzilla) Related CVEs: CVE-2020-13936 Upstream summary: An attacker that is able to modify Velocity templates may execute arbitrary Java code or run arbitrary system commands with the same […]

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Oracle Linux 8 — libxml2 — vulnerability — patch and remediation guide — diagnosis and fix on Oracle Linux 8

Oracle Linux 8 — libxml2 — vulnerability — patch and remediation guide (ELSA-2022-7715)

🟡 Medium   ⏱ 10–30 min  Last verified: 1 September 2020 Affected versions: Oracle Linux 8 📖 ~4 min read  •  Source: ELSA advisory ELSA-2022-7715 Related CVEs: CVE-2016-3709 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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How to Deploy a .NET Application on RHEL 8 — step-by-step RHEL 8 tutorial on Progressive Robot

How to Deploy a .NET Application on RHEL 8

Microsoft’s .NET 8 runtime and SDK are available for RHEL 8 directly from Red Hat’s AppStream and Microsoft’s package feed, making it straightforward to run modern ASP.NET Core applications on enterprise Linux. This tutorial covers installing the .NET 8 SDK, scaffolding a minimal Web API project, running it for local testing, publishing a self-contained Release […]

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Ubuntu 20.04 — spice-vdagent — multiple vulnerabilities (4 CVEs) — patch and remediation guide — diagnosis and fix on Ubuntu 20.04

Ubuntu 20.04 — spice-vdagent — multiple vulnerabilities (4 CVEs) — patch and remediation guide

🟡 Medium   ⏱ 10–30 min  Last verified: 31 August 2020 Affected versions: Ubuntu 20.04 (focal) 📖 ~4 min read  •  Source: Ubuntu Security Notice USN-4617-1 Related CVEs: CVE-2020-25650 CVE-2020-25651 CVE-2020-25652 CVE-2020-25653 Upstream summary: Matthias Gerstner discovered that SPICE vdagent incorrectly handled the active_xfers hash table. A local attacker could possibly use this issue to […]

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How to Set Up a Firewall with firewalld on SLES 12 — step-by-step SUSE Linux Enterprise 12 tutorial on Progressive Robot

How to Set Up a Firewall with firewalld on SLES 12

Introduction This tutorial covers How to Set Up a Firewall with firewalld on SLES 12 on SLES 12. SLES 12 (SUSE Linux Enterprise Server 16) is SUSE’s enterprise-grade Linux distribution. It uses the zypper package manager, AppArmor for mandatory access control, and systemctl for service management. Prerequisites Ensure your SLES 12 system is up to […]

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Ubuntu 18.04 — coturn — multiple vulnerabilities (4 CVEs) — patch and remediation guide — diagnosis and fix on Ubuntu 18.04

Ubuntu 18.04 — coturn — multiple vulnerabilities (4 CVEs) — patch and remediation guide

🟡 Medium   ⏱ 10–30 min  Last verified: 31 August 2020 Affected versions: Ubuntu 18.04 (bionic) 📖 ~4 min read  •  Source: Ubuntu Security Notice USN-4690-1 Related CVEs: CVE-2020-26262 CVE-2020-4067 CVE-2020-6061 CVE-2020-6062 Upstream summary: It was discovered that coTURN allowed peers to connect and relay packets to loopback addresses in the range of 127.x.x.x. A […]

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How to Set Up a Kubernetes Dashboard on FreeBSD 12 — step-by-step FreeBSD 12 tutorial on Progressive Robot

How to Set Up a Kubernetes Dashboard on FreeBSD 12

Introduction This guide explains how to Set Up a Kubernetes Dashboard on FreeBSD 12 on FreeBSD 12. FreeBSD uses the pkg(8) binary package manager, rc.conf(5) for service startup configuration, and pf(4) as its primary packet filter. There is no SELinux or AppArmor — instead, FreeBSD provides the MAC (Mandatory Access Control) framework and Capsicum for […]

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