May 2022 - Page 6 of 72

Arch Linux — dovecot — multiple vulnerabilities (19 CVEs) — patch and remediation guide — diagnosis and fix on Arch Linux

Arch Linux — dovecot — multiple vulnerabilities (19 CVEs) — patch and remediation guide

  • May 29, 2022
  • Linux
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🔴 Critical   ⏱ 15–90 min  Last verified: 25 May 2026 Affected versions: Arch Linux (rolling release) 📖 ~4 min read  •  Source: Arch ASA ASA-201908-18 Related CVEs: CVE-2019-11500 CVE-2021-33515 CVE-2021-29157 CVE-2020-25275 CVE-2020-24386 CVE-2020-10967 CVE-2020-10958 CVE-2020-10957  +11 more Upstream summary: Type: arbitrary code execution. Status: Fixed. Affected: 2.3.7.1-1. Fixed in: 2.3.7.2-1. Group: AVG-1026. Table of […]

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Common Problems 117030

Ubuntu 22.04 LTS PAM Configuration Error Locks Out Sudo Access

  • May 29, 2022
  • Linux
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🟡 Medium   ⏱ 5–30 min  Last verified: 19 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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How to Configure OpenLDAP Server on IBM AIX 7.3 — step-by-step IBM AIX 7.3 tutorial on Progressive Robot

How to Configure OpenLDAP Server 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 openldap server on IBM AIX 7.3 with practical […]

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Debian 11 — golang-github-microcosm-cc-bluemonday — vulnerability — patch and remediation guide — diagnosis and fix on Debian 11

Debian 11 — golang-github-microcosm-cc-bluemonday — vulnerability — patch and remediation guide

  • May 29, 2022
  • Linux
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🟢 Low   ⏱ 5–15 min  Last verified: 25 May 2026 Affected versions: Debian 11 (bullseye) 📖 ~4 min read  •  Source: Debian Security Tracker Related CVEs: CVE-2021-42576 Upstream summary: The bluemonday sanitizer before 1.0.16 for Go, and before 0.0.8 for Python (in pybluemonday), does not properly enforce policies associated with the SELECT, STYLE, and […]

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Common Problems 113948

RHEL 10 NetworkManager DHCP Lease Not Acquired on Boot

  • May 29, 2022
  • Linux
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🟠 High   ⏱ 5–30 min  Last verified: 19 May 2026 Affected versions: RHEL 10 📖 ~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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FreeBSD 13 — ipsec-tools — multiple vulnerabilities (3 CVEs) — patch and remediation guide — diagnosis and fix on FreeBSD 13

FreeBSD 13 — ipsec-tools — multiple vulnerabilities (3 CVEs) — patch and remediation guide

  • May 29, 2022
  • BSD
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🟡 Medium   ⏱ 10–30 min  Last verified: 25 May 2026 Affected versions: FreeBSD 13 📖 ~4 min read  •  Source: FreeBSD VuXML VuXML topic: ipsec-tools — remotely exploitable computational-complexity attack Related CVEs: CVE-2008-3651 CVE-2008-3652 CVE-2016-10396 Upstream summary: Robert Foggia via NetBSD GNATS reports: The ipsec-tools racoon daemon contains a remotely exploitable computational complexity attack […]

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Common Problems 113028

Windows Server 2016 – ACPI chipset driver conflict triggers unexpected reboots – Fix and Prevention

🟠 High   ⏱ 5–30 min  Last verified: 19 May 2026 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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Debian 11 — wheel — vulnerability — patch and remediation guide — diagnosis and fix on Debian 11

Debian 11 — wheel — vulnerability — patch and remediation guide

  • May 29, 2022
  • Linux
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🟢 Low   ⏱ 5–15 min  Last verified: 25 May 2026 Affected versions: Debian 11 (bullseye) 📖 ~4 min read  •  Source: Debian Security Tracker Related CVEs: CVE-2022-40898 Upstream summary: An issue discovered in Python Packaging Authority (PyPA) Wheel 0.37.1 and earlier allows remote attackers to cause a denial of service via attacker controlled input […]

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Common Problems 112553

Windows Server 2019 — Direct Server Return mode misconfiguration breaks SSL health probes in NLB — Fix & Prevention

🟠 High   ⏱ 5–30 min  Last verified: 19 May 2026 Affected versions: Windows Server 2019 📖 ~2 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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How to Configure GPG Key Management on Debian 11 — step-by-step Debian 11 tutorial on Progressive Robot

How to Configure GPG Key Management on Debian 11

  • May 29, 2022
  • Linux
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Introduction This guide explains how to Configure GPG Key Management on Debian 11 on Debian 11 Bullseye. Debian Bullseye uses systemd for service management, nftables as the underlying packet filter (with ufw or iptables front-ends still available), and AppArmor for mandatory access control. Every command is designed for a minimal Debian 11 install with the […]

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