August 2021 - Page 57 of 69

Common Problems 114612

RHEL 9 Cockpit web console inaccessible on port 9090

🟡 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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FreeBSD 13 — fswiki — vulnerability — patch and remediation guide — diagnosis and fix on FreeBSD 13

FreeBSD 13 — fswiki — vulnerability — patch and remediation guide

🟢 Low   ⏱ 5–15 min  Last verified: 25 May 2026 Affected versions: FreeBSD 13 📖 ~4 min read  •  Source: FreeBSD VuXML VuXML topic: fswiki — XSS vulnerability Related CVEs: CVE-2005-1799 Upstream summary: JVN reports: FreeStyleWiki has XSS vulnerability. Table of contents Symptom & Impact Environment & Reproduction Root Cause Analysis Quick Triage Step-by-Step […]

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FreeBSD 13 — py37-gunicorn — vulnerability — patch and remediation guide — diagnosis and fix on FreeBSD 13

FreeBSD 13 — py37-gunicorn — vulnerability — patch and remediation guide

🟢 Low   ⏱ 5–15 min  Last verified: 25 May 2026 Affected versions: FreeBSD 13 📖 ~4 min read  •  Source: FreeBSD VuXML VuXML topic: py-gunicorn — CWE-113 vulnerability Related CVEs: CVE-2018-1000164 Upstream summary: Everardo reports: gunicorn version 19.4.5 contains a CWE-113: Improper Neutralization of CRLF Sequences in HTTP Headers vulnerability in process_headers function in […]

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How To Use Classes in TypeScript — step-by-step Javascript tutorial on Progressive Robot

How To Use Classes in TypeScript

Classes are a common abstraction used in object-oriented programming (OOP) languages to describe data structures known as objects. TypeScript has full support for class syntax and also adds features on top of it, like member visibility, abstract classes, generic classes, arrow function methods, and a few others. This tutorial will go through the syntax used to create classes, the different features available, and how classes are treated in TypeScript during the compile-time type-check.

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How to Sign Container Images with cosign on RHEL 10 — step-by-step RHEL 10 tutorial on Progressive Robot

How to Sign Container Images with cosign on RHEL 10

Introduction How to Sign Container Images with cosign on RHEL 10 on RHEL 10 provides administrators with a robust, enterprise-ready workflow that integrates cleanly with systemd, SELinux, firewalld, and the modern AppStream module system. In this tutorial we will walk through every step required, from package installation to verification, so that the resulting configuration is […]

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FreeBSD 13 — et-openoffice — multiple vulnerabilities (2 CVEs) — patch and remediation guide — diagnosis and fix on FreeBSD 13

FreeBSD 13 — et-openoffice — multiple vulnerabilities (2 CVEs) — patch and remediation guide

🟢 Low   ⏱ 5–15 min  Last verified: 25 May 2026 Affected versions: FreeBSD 13 📖 ~4 min read  •  Source: FreeBSD VuXML VuXML topic: openoffice — DOC document heap overflow vulnerability Related CVEs: CVE-2004-0752 CVE-2005-0941 Upstream summary: AD-LAB reports that a heap-based buffer overflow vulnerability exists in OpenOffice's handling of DOC documents. When reading […]

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FreeBSD 13 — rubygem-activerecord — multiple vulnerabilities (19 CVEs) — patch and remediation guide — diagnosis and fix on FreeBSD 13

FreeBSD 13 — rubygem-activerecord — multiple vulnerabilities (19 CVEs) — patch and remediation guide

🟠 High   ⏱ 15–60 min  Last verified: 25 May 2026 Affected versions: FreeBSD 13 📖 ~4 min read  •  Source: FreeBSD VuXML VuXML topic: Rails — multiple vulnerabilities Related CVEs: CVE-2013-0155 CVE-2013-0156 CVE-2013-1854 CVE-2013-1856 CVE-2013-1857 CVE-2013-4491 CVE-2013-6414 CVE-2013-6415  +11 more Upstream summary: Ruby on Rails blog: Rails version 5.2.4.5, 6.0.3.5 and 6.1.2.1 have been […]

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Ubuntu 20.04 — adminer — multiple vulnerabilities (3 CVEs) — patch and remediation guide — diagnosis and fix on Ubuntu 20.04

Ubuntu 20.04 — adminer — multiple vulnerabilities (3 CVEs) — patch and remediation guide

🟡 Medium   ⏱ 10–30 min  Last verified: 25 May 2026 Affected versions: Ubuntu 20.04 (focal) 📖 ~4 min read  •  Source: Ubuntu Security Notice USN-5271-1 Related CVEs: CVE-2020-35572 CVE-2021-21311 CVE-2021-29625 Upstream summary: It was discovered that Adminer did not escape data in the history parameter of the default URI. A remote attacker could possibly […]

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How To Run Serverless Functions Using OpenFaaS on Kubernetes — step-by-step Kubernetes tutorial on Progressive Robot

How To Run Serverless Functions Using OpenFaaS on Kubernetes

OpenFaaS is an open-source framework for implementing the serverless architecture on Kubernetes, using Docker containers for storing and running functions. In this tutorial, you will deploy OpenFaaS to your Kubernetes cluster at your domain and secure it using free Let’s Encrypt TLS certificates.

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IBM AIX 7.2 — CVE-2021-29888 — vulnerability — patch and remediation guide — diagnosis and fix on IBM AIX 7.2

IBM AIX 7.2 — CVE-2021-29888 — vulnerability — patch and remediation guide

🟠 High   ⏱ 30–90 min  Last verified: 25 May 2026 Affected versions: IBM AIX 7.2 📖 ~4 min read  •  Source: NVD CVE-2021-29888, IBM Support Bulletin CVE: CVE-2021-29888 NVD summary: IBM InfoSphere Information Server 11.7 is vulnerable to cross-site request forgery which could allow an attacker to execute malicious and unauthorized actions transmitted from […]

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