Common Problems

Debian 12 — configobj — vulnerability — patch and remediation guide — diagnosis and fix on Debian 12

Debian 12 — configobj — vulnerability — patch and remediation guide

🟢 Low   ⏱ 5–15 min  Last verified: 21 November 2023 Affected versions: Debian 12 (bookworm) 📖 ~4 min read  •  Source: Debian Security Tracker Related CVEs: CVE-2023-26112 Upstream summary: All versions of the package configobj are vulnerable to Regular Expression Denial of Service (ReDoS) via the validate function, using (.+?)\((.*)\). **Note:** This is only […]

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Windows Server 2016 — KB5022338 — multiple vulnerabilities (20 CVEs) — patch and remediation guide — diagnosis and fix on Windows Server 2016

Windows Server 2016 — KB5022338 — multiple vulnerabilities (20 CVEs) — patch and remediation guide

🔴 Critical   ⏱ 15–90 min  Last verified: 25 May 2026 Affected versions: Windows Server 2016 📖 ~4 min read  •  Source: Microsoft KB5022338 • MSRC update-guide entry Related CVEs: CVE-2023-21546 CVE-2023-21543 CVE-2023-21548 CVE-2023-21555 CVE-2023-21556 CVE-2023-21561 CVE-2023-21679 CVE-2023-21730  +12 more Affected components: Windows Server 2016 Table of contents Symptom & Impact Environment & Reproduction Root […]

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Common Problems 117452

Ubuntu 20.04 LTS – cloud-init network overrides break static IP settings – Fix & Prevention

🟡 Medium   ⏱ 5–30 min  Last verified: 21 November 2023 Affected versions: Ubuntu 20.04 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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Debian 12 — dvipng — vulnerability — patch and remediation guide — diagnosis and fix on Debian 12

Debian 12 — dvipng — vulnerability — patch and remediation guide

🟢 Low   ⏱ 5–15 min  Last verified: 21 November 2023 Affected versions: Debian 12 (bookworm) 📖 ~4 min read  •  Source: Debian Security Tracker Related CVEs: CVE-2010-0829 Upstream summary: Multiple array index errors in set.c in dvipng 1.11 and 1.12, and teTeX, allow remote attackers to cause a denial of service (application crash) or […]

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openSUSE Leap 15.5 — xtrans — vulnerability — patch and remediation guide — diagnosis and fix on openSUSE Leap 15.5

openSUSE Leap 15.5 — xtrans — vulnerability — patch and remediation guide

🟢 Low   ⏱ 5–15 min  Last verified: 25 May 2026 Affected versions: openSUSE Leap 15.5 📖 ~4 min read  •  Source: SUSE advisory SUSE-SU-2023:3189-1 (see also SUSE bugzilla) Related CVEs: CVE-2020-25697 Upstream summary: A privilege escalation flaw was found in the Xorg-x11-server due to a lack of authentication for X11 clients. This flaw allows […]

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Common Problems 117109

Ubuntu 22.04 LTS – multipath or duplicate UUID causes slow boot waits

🟡 Medium   ⏱ 5–30 min  Last verified: 21 November 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 […]

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Debian 11 — cjson — multiple vulnerabilities (10 CVEs) — patch and remediation guide — diagnosis and fix on Debian 11

Debian 11 — cjson — multiple vulnerabilities (10 CVEs) — patch and remediation guide

🟠 High   ⏱ 15–60 min  Last verified: 21 November 2023 Affected versions: Debian 11 (bullseye) 📖 ~4 min read  •  Source: Debian Security Tracker Related CVEs: CVE-2018-1000215 CVE-2019-1010239 CVE-2019-11834 CVE-2019-11835 CVE-2023-26819 CVE-2023-50471 CVE-2023-50472 CVE-2023-53154  +2 more Upstream summary: Dave Gamble cJSON version 1.7.6 and earlier contains a CWE-772 vulnerability in cJSON library that can […]

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Debian 12 — gupnp — multiple vulnerabilities (3 CVEs) — patch and remediation guide — diagnosis and fix on Debian 12

Debian 12 — gupnp — multiple vulnerabilities (3 CVEs) — patch and remediation guide

🟡 Medium   ⏱ 10–30 min  Last verified: 21 November 2023 Affected versions: Debian 12 (bookworm) 📖 ~4 min read  •  Source: Debian Security Tracker Related CVEs: CVE-2009-2174 CVE-2020-12695 CVE-2021-33516 Upstream summary: GUPnP 0.12.7 allows remote attackers to cause a denial of service (crash) via an empty (1) subscription or (2) control message. Table of […]

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Common Problems 115631

RHEL 7 yum Fails Due To Expired Repository TLS Certificate

🟠 High   ⏱ 5–30 min  Last verified: 21 November 2023 Affected versions: RHEL 7 📖 ~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 12 — kiwi — vulnerability — patch and remediation guide — diagnosis and fix on Debian 12

Debian 12 — kiwi — vulnerability — patch and remediation guide

🟢 Low   ⏱ 5–15 min  Last verified: 21 November 2023 Affected versions: Debian 12 (bookworm) 📖 ~4 min read  •  Source: Debian Security Tracker Related CVEs: CVE-2017-17532 Upstream summary: examples/framework/news/news3.py in Kiwi 1.9.22 does not validate strings before launching the program specified by the BROWSER environment variable, which might allow remote attackers to conduct […]

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