Logging Monitoring

Common Problems 117030

Ubuntu 22.04 LTS PAM Configuration Error Locks Out Sudo Access

🟡 Medium   ⏱ 5–30 min  Last verified: 29 May 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 & Cross-Refs References & Further […]

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AlmaLinux 8 — unzip — vulnerability — patch and remediation guide — diagnosis and fix on AlmaLinux 8

AlmaLinux 8 — unzip — vulnerability — patch and remediation guide

🟡 Medium   ⏱ 10–30 min  Last verified: 25 May 2026 Affected versions: AlmaLinux 8 📖 ~4 min read  •  Source: AlmaLinux ALSA ALBA-2022:2098 Upstream summary: For detailed information on changes in this release, see the AlmaLinux Release Notes linked from the References section. Table of contents Symptom & Impact Environment & Reproduction Root Cause […]

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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

🟢 Low   ⏱ 5–15 min  Last verified: 29 May 2022 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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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

🟡 Medium   ⏱ 10–30 min  Last verified: 29 May 2022 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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Debian 11 — wheel — vulnerability — patch and remediation guide — diagnosis and fix on Debian 11

Debian 11 — wheel — vulnerability — patch and remediation guide

🟢 Low   ⏱ 5–15 min  Last verified: 29 May 2022 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: 29 May 2022 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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Alpine Linux edge — xterm — multiple vulnerabilities (2 CVEs) — patch and remediation guide — diagnosis and fix on Alpine Linux edge

Alpine Linux edge — xterm — multiple vulnerabilities (2 CVEs) — patch and remediation guide

🟡 Medium   ⏱ 10–30 min  Last verified: 25 May 2026 Affected versions: Alpine Linux edge / fixed in 371-r0 📖 ~4 min read  •  Source: Alpine secdb entry — xterm 371-r0 Related CVEs: CVE-2022-24130 CVE-2021-27135 Upstream summary: Alpine community repository for vedge ships xterm 371-r0 which addresses CVE-2022-24130. Table of contents Symptom & Impact […]

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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

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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Debian 11 — cups-pk-helper — vulnerability — patch and remediation guide — diagnosis and fix on Debian 11

Debian 11 — cups-pk-helper — vulnerability — patch and remediation guide

🟢 Low   ⏱ 5–15 min  Last verified: 29 May 2022 Affected versions: Debian 11 (bullseye) 📖 ~4 min read  •  Source: Debian Security Tracker Related CVEs: CVE-2012-4510 Upstream summary: cups-pk-helper before 0.2.3 does not properly wrap the (1) cupsGetFile and (2) cupsPutFile function calls, which allows user-assisted remote attackers to read or overwrite sensitive […]

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Ubuntu 20.04 — node-json5 — vulnerability — patch and remediation guide — diagnosis and fix on Ubuntu 20.04

Ubuntu 20.04 — node-json5 — vulnerability — patch and remediation guide

🟢 Low   ⏱ 5–15 min  Last verified: 29 May 2022 Affected versions: Ubuntu 20.04 (focal) 📖 ~4 min read  •  Source: Ubuntu Security Notice USN-6758-1 Related CVEs: CVE-2022-46175 Upstream summary: It was discovered that the JSON5 parse method incorrectly handled the parsing of keys named \_\_proto\_\_. An attacker could possibly use this issue to […]

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