Package Management

How to Use AIX WPAR Manager on IBM AIX 7.1 — step-by-step IBM AIX 7.1 tutorial on Progressive Robot

How to Use AIX WPAR Manager 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 use aix wpar manager on ibm aix 7.1 on […]

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

FreeBSD 12 — pcal — vulnerability — patch and remediation guide

🟢 Low   ⏱ 5–15 min  Last verified: 19 August 2019 Affected versions: FreeBSD 12 📖 ~4 min read  •  Source: FreeBSD VuXML VuXML topic: pcal — buffer overflow vulnerabilities Related CVEs: CVE-2004-1289 Upstream summary: Danny Lungstrom has found two buffer overflow vulnerabilities in pcal which can lead to execution of arbitrary code by making […]

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FreeBSD 12 — rdesktop — multiple vulnerabilities (19 CVEs) — patch and remediation guide — diagnosis and fix on FreeBSD 12

FreeBSD 12 — rdesktop — multiple vulnerabilities (19 CVEs) — patch and remediation guide

🟠 High   ⏱ 15–60 min  Last verified: 19 August 2019 Affected versions: FreeBSD 12 📖 ~4 min read  •  Source: FreeBSD VuXML VuXML topic: rdesktop – critical – Remote Code Execution Related CVEs: CVE-2018-20174 CVE-2018-20175 CVE-2018-20176 CVE-2018-20177 CVE-2018-20178 CVE-2018-20179 CVE-2018-20180 CVE-2018-20181  +11 more Upstream summary: Fix memory corruption in process_bitmap_data – CVE-2018-8794 Fix remote […]

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

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

🟡 Medium   ⏱ 10–30 min  Last verified: 25 May 2026 Affected versions: Alpine Linux edge / fixed in 3.2.2-r0 📖 ~4 min read  •  Source: Alpine secdb entry — confuse 3.2.2-r0 Related CVEs: CVE-2018-14447 Upstream summary: Alpine main repository for vedge ships confuse 3.2.2-r0 which addresses CVE-2018-14447. Table of contents Symptom & Impact Environment […]

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How to Implement Network Segmentation on SLES 15 — step-by-step SUSE Linux Enterprise 15 tutorial on Progressive Robot

How to Implement Network Segmentation on SLES 15

Introduction This tutorial covers How to Implement Network Segmentation on SLES 15 on SLES 15. SLES 15 (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 15 system is up to date: zypper refresh […]

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Debian 9 — apache2 — multiple vulnerabilities (7 CVEs) — patch and remediation guide — diagnosis and fix on Debian 9

Debian 9 — apache2 — multiple vulnerabilities (7 CVEs) — patch and remediation guide

🟡 Medium   ⏱ 10–30 min  Last verified: 19 August 2019 Affected versions: Debian 9 (stretch) 📖 ~4 min read  •  Source: Debian Security Tracker Related CVEs: CVE-2017-15710 CVE-2017-3167 CVE-2017-9788 CVE-2017-9798 CVE-2018-17189 CVE-2019-9517 CVE-2019-10092 Table of contents Symptom & Impact Environment & Reproduction Root Cause Analysis Quick Triage Step-by-Step Diagnosis Solution – Primary Fix Solution […]

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Common Problems 119160

Ubuntu 14.04 LTS repository 404 errors after end-of-life

🟡 Medium   ⏱ 5–30 min  Last verified: 18 August 2019 📖 ~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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Common Problems 119159

Ubuntu 14.04 LTS apt repositories return 404 after EOL

🟠 High   ⏱ 5–30 min  Last verified: 18 August 2019 Affected versions: 14.04 LTS 📖 ~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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How to Configure the APT Package Manager on Debian 9 — step-by-step Debian 9 tutorial on Progressive Robot

How to Configure the APT Package Manager on Debian 9

Introduction Debian 9 Stretch is built around the ethos of stability and free software. Setting up configure the apt package manager on debian 9 on Stretch leverages the same proven Debian packaging system that powers millions of servers worldwide, while benefiting from the latest upstream releases included in the Stretch freeze. Follow each step carefully […]

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Common Problems 115431

Chronyd Time Drift Causing TLS and Repository Failures

🟡 Medium   ⏱ 5–30 min  Last verified: 18 August 2019 📖 ~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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