Operations

Debian 11 — libx11 — multiple vulnerabilities (19 CVEs) — patch and remediation guide — diagnosis and fix on Debian 11

Debian 11 — libx11 — multiple vulnerabilities (19 CVEs) — patch and remediation guide

🟠 High   ⏱ 15–60 min  Last verified: 3 January 2023 Affected versions: Debian 11 (bullseye) 📖 ~4 min read  •  Source: Debian Security Tracker Related CVEs: CVE-2006-4447 CVE-2006-5397 CVE-2007-1667 CVE-2013-1981 CVE-2013-1997 CVE-2013-2004 CVE-2013-7439 CVE-2016-7942  +11 more Upstream summary: X.Org and XFree86, including libX11, xdm, xf86dga, xinit, xload, xtrans, and xterm, does not check the […]

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Ubuntu 22.04 — exempi — multiple vulnerabilities (20 CVEs) — patch and remediation guide — diagnosis and fix on Ubuntu 22.04

Ubuntu 22.04 — exempi — multiple vulnerabilities (20 CVEs) — patch and remediation guide

🟠 High   ⏱ 15–60 min  Last verified: 3 January 2023 Affected versions: Ubuntu 22.04 (jammy) 📖 ~4 min read  •  Source: Ubuntu Security Notice USN-5483-1 Related CVEs: CVE-2018-12648 CVE-2021-36045 CVE-2021-36046 CVE-2021-36047 CVE-2021-36048 CVE-2021-36050 CVE-2021-36051 CVE-2021-36052  +12 more Upstream summary: It was discovered that Exempi incorrectly handled certain media files. If a user or automated […]

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How to Install k3s Lightweight Kubernetes on RHEL 7 — step-by-step RHEL 7 tutorial on Progressive Robot

How to Install k3s Lightweight Kubernetes on RHEL 7

How to Install k3s Lightweight Kubernetes on RHEL 7 k3s is a certified, production-ready Kubernetes distribution engineered for resource-constrained environments. Developed by Rancher Labs (now part of SUSE), it packages the entire Kubernetes control plane into a single binary under 100 MB, includes Traefik as a built-in ingress controller, and removes legacy or alpha features […]

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Common Problems 116968

Ubuntu 22.04 LTS – unattended-upgrades gets stuck and blocks patching – Fix & Prevention

🟠 High   ⏱ 5–30 min  Last verified: 2 January 2023 Affected versions: Ubuntu 22.04 LTS (Jammy) 📖 ~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 […]

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Common Problems 115591

NFS Mount Timeout from firewalld and SELinux Restrictions

🟡 Medium   ⏱ 5–30 min  Last verified: 2 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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IBM AIX 7.3 — CVE-2021-29798 — sql injection — patch and remediation guide — diagnosis and fix on IBM AIX 7.3

IBM AIX 7.3 — CVE-2021-29798 — sql injection — patch and remediation guide

🟡 Medium   ⏱ 15–45 min  Last verified: 2 January 2023 Affected versions: IBM AIX 7.3 📖 ~4 min read  •  Source: NVD CVE-2021-29798, IBM Support Bulletin CVE: CVE-2021-29798 NVD summary: IBM Sterling B2B Integrator Standard Edition 6.0.0.0 through 6.1.1.0 is vulnerable to SQL injection. A remote attacker could send specially crafted SQL statements, which […]

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Common Problems 114892

RHEL 8 DNF Metadata Expired and Repositories Out of Sync

🟡 Medium   ⏱ 5–30 min  Last verified: 2 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 Configure PAM Authentication on IBM AIX 7.3 — step-by-step IBM AIX 7.3 tutorial on Progressive Robot

How to Configure PAM Authentication 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 configure pam authentication on IBM AIX 7.3 with practical […]

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Debian 11 — ax25-tools — vulnerability — patch and remediation guide — diagnosis and fix on Debian 11

Debian 11 — ax25-tools — vulnerability — patch and remediation guide

🟢 Low   ⏱ 5–15 min  Last verified: 2 January 2023 Affected versions: Debian 11 (bullseye) 📖 ~4 min read  •  Source: Debian Security Tracker Related CVEs: CVE-2011-2910 Upstream summary: The AX.25 daemon (ax25d) in ax25-tools before 0.0.8-13 does not check the return value of a setuid call. The setuid call is responsible for dropping […]

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Common Problems 111670

Windows Server 2022 — LBFO NIC team disables after Windows Server 2022 cumulative update — Fix & Prevention

🟠 High   ⏱ 5–30 min  Last verified: 2 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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