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Common Problems 116950

Ubuntu 22.04 LTS DNS Resolution Intermittently Fails with systemd-resolved

🟡 Medium   ⏱ 5–30 min  Last verified: 4 January 2023 📖 ~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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How to Use xlC C/C++ Compiler on IBM AIX 7.3 — step-by-step IBM AIX 7.3 tutorial on Progressive Robot

How to Use xlC C/C++ Compiler on IBM AIX 7.3

Introduction IBM AIX 7.3 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 7.3 introduces enhanced virtualization, security hardening, and cloud integration features. This guide covers how to use xlc c/c++ compiler on IBM AIX 7.3 with […]

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Debian 11 — python-mistralclient — vulnerability — patch and remediation guide — diagnosis and fix on Debian 11

Debian 11 — python-mistralclient — vulnerability — patch and remediation guide

🟢 Low   ⏱ 5–15 min  Last verified: 4 January 2023 Affected versions: Debian 11 (bullseye) 📖 ~4 min read  •  Source: Debian Security Tracker Related CVEs: CVE-2021-4472 Upstream summary: The mistral-dashboard plugin for openstack has a local file inclusion vulnerability through the 'Create Workbook' feature that may result in disclosure of arbitrary local files […]

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Debian 11 — samizdat — vulnerability — patch and remediation guide — diagnosis and fix on Debian 11

Debian 11 — samizdat — vulnerability — patch and remediation guide

🟢 Low   ⏱ 5–15 min  Last verified: 4 January 2023 Affected versions: Debian 11 (bullseye) 📖 ~4 min read  •  Source: Debian Security Tracker Related CVEs: CVE-2009-0359 Upstream summary: Multiple cross-site scripting (XSS) vulnerabilities in Samizdat before 0.6.2 allow remote authenticated users to inject arbitrary web script or HTML via the (1) message title […]

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Common Problems 111846

Windows Server 2022 – Windows Admin Center gateway certificate chain incomplete – Fix & Prevention

🟡 Medium   ⏱ 5–30 min  Last verified: 4 January 2023 Affected versions: Windows Server 2022 📖 ~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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Debian 11 — lightdm-gtk-greeter — vulnerability — patch and remediation guide — diagnosis and fix on Debian 11

Debian 11 — lightdm-gtk-greeter — vulnerability — patch and remediation guide

🟢 Low   ⏱ 5–15 min  Last verified: 4 January 2023 Affected versions: Debian 11 (bullseye) 📖 ~4 min read  •  Source: Debian Security Tracker Related CVEs: CVE-2014-0979 Upstream summary: The start_authentication function in lightdm-gtk-greeter.c in LightDM GTK+ Greeter before 1.7.1 does not properly handle the return value from the lightdm_greeter_get_authentication_user function, which allows local […]

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What Is a Hypervisor? — step-by-step DevOps tutorial on Progressive Robot

What Is a Hypervisor?

A hypervisor is software that creates, runs, and monitors virtual machines. The hypervisor shares the host’s resources — such as CPU, memory and storage — among various guest VMs. A hypervisor provides the flexibility to run virtual machines that use operating systems different from the one run by the host machine.

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OpenBSD 7.5 — xserver — errata 012_xserver — security advisory — syspatch and remediation — diagnosis and fix on OpenBSD 7.5

OpenBSD 7.5 — xserver — errata 012_xserver — security advisory — syspatch and remediation

🟠 High   ⏱ 15–60 min  Last verified: 25 May 2026 Affected versions: OpenBSD 7.5 📖 ~4 min read  •  Source: OpenBSD 7.5 errata 012_xserver Errata topic: Security: xserver (All architectures) Issued: October 29, 2024 Related CVEs: CVE-2024-9632 Upstream summary: Fix memory allocation error in the Xkb X11 server extension. CVE-2024-9632 Table of contents Symptom […]

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Ubuntu 14.04 — unzip — multiple vulnerabilities (17 CVEs) — patch and remediation guide — diagnosis and fix on Ubuntu 14.04

Ubuntu 14.04 — unzip — multiple vulnerabilities (17 CVEs) — patch and remediation guide

🟠 High   ⏱ 15–60 min  Last verified: 4 January 2023 Affected versions: Ubuntu 14.04 (trusty) 📖 ~4 min read  •  Source: Ubuntu Security Notice USN-5673-1 Related CVEs: CVE-2021-4217 CVE-2022-0529 CVE-2022-0530 https://launchpad.net/bugs/1957077 CVE-2014-9913 CVE-2016-9844 CVE-2018-1000035 CVE-2018-18384  +9 more Upstream summary: It was discovered that unzip did not properly handle unicode strings under certain circumstances. If […]

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