Operations

IBM AIX 7.3 — CVE-2007-4355 — buffer overflow — patch and remediation guide — diagnosis and fix on IBM AIX 7.3

IBM AIX 7.3 — CVE-2007-4355 — buffer overflow — patch and remediation guide

🟠 High   ⏱ 30–90 min  Last verified: 27 January 2023 Affected versions: IBM AIX 7.3 📖 ~4 min read  •  Source: NVD CVE-2007-4355, IBM Support Bulletin CVE: CVE-2007-4355 NVD summary: Buffer overflow in the at program on IBM AIX 5.3 allows local users to gain privileges via unspecified vectors. References: ftp://aix.software.ibm.com/aix/efixes/security/R   osvdb.org/36794   […]

Read more
Windows Server 2019 — KB5025234 — multiple vulnerabilities (20 CVEs) — patch and remediation guide — diagnosis and fix on Windows Server 2019

Windows Server 2019 — KB5025234 — multiple vulnerabilities (20 CVEs) — patch and remediation guide

🔴 Critical   ⏱ 15–90 min  Last verified: 25 May 2026 Affected versions: Windows Server 2019 📖 ~4 min read  •  Source: Microsoft KB5025234 • MSRC update-guide entry Related CVEs: CVE-2023-21554 CVE-2023-28219 CVE-2023-28220 CVE-2023-28232 CVE-2023-28250 CVE-2023-21769 CVE-2023-21729 CVE-2023-21727  +12 more Affected components: Windows Server 2019 (Server Core installation) Table of contents Symptom & Impact Environment […]

Read more
How to Set Up Windows Server 2022 Group Policy Modelling — step-by-step Windows Server 2022 tutorial on Progressive Robot

How to Set Up Windows Server 2022 Group Policy Modelling

What Is Microsoft Sentinel Microsoft Sentinel (formerly Azure Sentinel until 2021) is a cloud-native Security Information and Event Management (SIEM) and Security Orchestration, Automation, and Response (SOAR) platform built on Azure. Unlike traditional on-premises SIEM systems that require dedicated hardware, licensing per managed device, and significant operational overhead, Sentinel is a fully managed SaaS platform […]

Read more
Common Problems 117029

Ubuntu 22.04 LTS – Docker service fails due to cgroup driver mismatch

🟠 High   ⏱ 5–30 min  Last verified: 26 January 2023 Affected versions: Ubuntu 22.04 LTS Ubuntu 22.04 Ubuntu 22.04.4 📖 ~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 […]

Read more
How to Set Up the ELK Stack on Oracle Linux 9 — step-by-step Oracle Linux 9 tutorial on Progressive Robot

How to Set Up the ELK Stack on Oracle Linux 9

Introduction Oracle Linux 9 ships with a stable, security-hardened base that makes deploying set up the elk stack on oracle linux 9 both straightforward and auditable. This tutorial covers the complete procedure for how to Set Up the ELK Stack on Oracle Linux 9, including dnf module streams where applicable, systemd unit management, and the […]

Read more
AlmaLinux 9 — libX11 — multiple vulnerabilities (4 CVEs) — patch and remediation guide — diagnosis and fix on AlmaLinux 9

AlmaLinux 9 — libX11 — multiple vulnerabilities (4 CVEs) — patch and remediation guide

🟡 Medium   ⏱ 10–30 min  Last verified: 25 May 2026 Affected versions: AlmaLinux 9 📖 ~4 min read  •  Source: AlmaLinux ALSA ALSA-2024:2145 Related CVEs: CVE-2023-43785 CVE-2023-43786 CVE-2023-43787 CVE-2023-3138 Upstream summary: The libX11 packages contain the core X11 protocol client library. Security Fix(es): * libX11: out-of-bounds memory access in _XkbReadKeySyms() (CVE-2023-43785) * libX11: stack […]

Read more
Debian 11 — sysstat — multiple vulnerabilities (8 CVEs) — patch and remediation guide — diagnosis and fix on Debian 11

Debian 11 — sysstat — multiple vulnerabilities (8 CVEs) — patch and remediation guide

🟡 Medium   ⏱ 10–30 min  Last verified: 26 January 2023 Affected versions: Debian 11 (bullseye) 📖 ~4 min read  •  Source: Debian Security Tracker Related CVEs: CVE-2004-0107 CVE-2004-0108 CVE-2018-19416 CVE-2018-19517 CVE-2019-16167 CVE-2019-19725 CVE-2022-39377 CVE-2023-33204 Upstream summary: The (1) post and (2) trigger scripts in sysstat 4.0.7 and earlier allow local users to overwrite arbitrary […]

Read more
Debian 11 — libvorbisidec — multiple vulnerabilities (11 CVEs) — patch and remediation guide — diagnosis and fix on Debian 11

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

🟠 High   ⏱ 15–60 min  Last verified: 26 January 2023 Affected versions: Debian 11 (bullseye) 📖 ~4 min read  •  Source: Debian Security Tracker Related CVEs: CVE-2007-3106 CVE-2007-4029 CVE-2007-4065 CVE-2007-4066 CVE-2008-1419 CVE-2008-1423 CVE-2008-2009 CVE-2009-2663  +3 more Upstream summary: lib/info.c in libvorbis 1.1.2, and possibly other versions before 1.2.0, allows context-dependent attackers to cause a […]

Read more
Common Problems 111820

Windows Server 2022 — Smart card logon fails with KDC certificate trust error — Fix & Prevention

🟠 High   ⏱ 5–30 min  Last verified: 26 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 […]

Read more
Alpine Linux edge — tailscale — multiple vulnerabilities (3 CVEs) — patch and remediation guide — diagnosis and fix on Alpine Linux edge

Alpine Linux edge — tailscale — multiple vulnerabilities (3 CVEs) — patch and remediation guide

🟡 Medium   ⏱ 10–30 min  Last verified: 25 May 2026 Affected versions: Alpine Linux edge / fixed in 1.66.1-r0 📖 ~4 min read  •  Source: Alpine secdb entry — tailscale 1.66.1-r0 Related CVEs: CVE-????-????? CVE-2022-41924 CVE-2022-41925 Upstream summary: Alpine community repository for vedge ships tailscale 1.66.1-r0 which addresses CVE-????-?????. Table of contents Symptom & […]

Read more
CHAT