Security Hardening

SLES 15 — csync2 — multiple vulnerabilities (2 CVEs) — patch and remediation guide — diagnosis and fix on SLES 15

SLES 15 — csync2 — multiple vulnerabilities (2 CVEs) — patch and remediation guide

🟠 High   ⏱ 15–60 min  Last verified: 7 December 2019 Affected versions: SLES 15 📖 ~4 min read  •  Source: SUSE advisory SUSE-SU-2021:14763-1 (see also SUSE bugzilla) Related CVEs: CVE-2019-15522 CVE-2019-15523 Upstream summary: An issue was discovered in LINBIT csync2 through 2.0. csync_daemon_session in daemon.c neglects to force a failure of a hello command […]

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SLES 15 — libotr5 — vulnerability — patch and remediation guide — diagnosis and fix on SLES 15

SLES 15 — libotr5 — vulnerability — patch and remediation guide

🟡 Medium   ⏱ 10–30 min  Last verified: 7 December 2019 Affected versions: SLES 15 📖 ~4 min read  •  Source: SUSE advisory SUSE-SU-2016:0706-1 (see also SUSE bugzilla) Related CVEs: CVE-2016-2851 Upstream summary: Integer overflow in proto.c in libotr before 4.1.1 on 64-bit platforms allows remote attackers to cause a denial of service (memory corruption […]

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How to Write Advanced PowerShell Scripts for Windows Server 2019 Administration — step-by-step Windows Server 2019 tutorial on Progressive Robot

How to Write Advanced PowerShell Scripts for Windows Server 2019 Administration

Introduction to Advanced PowerShell Scripting for Windows Server 2019 Windows Server 2019 ships with PowerShell 5.1 by default, and PowerShell 7.x can be installed side-by-side. Advanced scripting on this platform goes well beyond one-liners. A professional administrator writes scripts that are modular, error-tolerant, self-documenting, and safe to run in production. This guide covers the patterns […]

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FreeBSD 12 — FreeBSD — multiple vulnerabilities (20 CVEs) — patch and remediation guide — diagnosis and fix on FreeBSD 12

FreeBSD 12 — FreeBSD — multiple vulnerabilities (20 CVEs) — patch and remediation guide

🟠 High   ⏱ 15–60 min  Last verified: 7 December 2019 Affected versions: FreeBSD 12 📖 ~4 min read  •  Source: FreeBSD VuXML VuXML topic: FreeBSD — Incorrect libcap_net limitation list manipulation Related CVEs: CAN-2005-2693 CAN-2005-3011 CVE-2003-0914 CVE-2003-0989 CVE-2003-1029 CVE-2004-0057 CVE-2004-0079 CVE-2004-0099  +12 more Upstream summary: Problem Description: In the case of the cap_net service, […]

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Gentoo Linux — dev-python/Levenshtein — vulnerability — patch and remediation guide — diagnosis and fix on Gentoo Linux

Gentoo Linux — dev-python/Levenshtein — vulnerability — patch and remediation guide

🟡 Medium   ⏱ 10–30 min  Last verified: 25 May 2026 Affected versions: Gentoo Linux 📖 ~4 min read  •  Source: Gentoo GLSA GLSA-202408-04 Upstream summary: Fixed handling of numerous possible wraparounds in calculating the size of memory allocations; incorrect handling of which could cause denial of service or even possible remote code execution. Table […]

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Common Problems 118961

Ubuntu 14.04 LTS network interface missing after reboot

🟠 High   ⏱ 5–30 min  Last verified: 6 December 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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Common Problems 114909

RHEL 8 – GPG Signature Verification Fails for Enabled Repositories

🟡 Medium   ⏱ 5–30 min  Last verified: 6 December 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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How to Set Up GlusterFS on SLES 15 — step-by-step SUSE Linux Enterprise 15 tutorial on Progressive Robot

How to Set Up GlusterFS on SLES 15

Introduction This tutorial covers How to Set Up GlusterFS 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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Common Problems 112995

Windows Server 2016 – BitLocker recovery prompts after firmware updates – Fix & Prevention

🟠 High   ⏱ 5–30 min  Last verified: 6 December 2019 Affected versions: Windows Server 2016 📖 ~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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openSUSE Tumbleweed — httpie — vulnerability — patch and remediation guide — diagnosis and fix on openSUSE Tumbleweed

openSUSE Tumbleweed — httpie — vulnerability — patch and remediation guide

🟡 Medium   ⏱ 10–30 min  Last verified: 25 May 2026 Affected versions: openSUSE Tumbleweed 📖 ~4 min read  •  Source: SUSE advisory openSUSE-SU-2019:2050-1 (see also SUSE bugzilla) Related CVEs: CVE-2019-10751 Upstream summary: All versions of the HTTPie package prior to version 1.0.3 are vulnerable to Open Redirect that allows an attacker to write an […]

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