Common Problems

Debian 11 — avahi — multiple vulnerabilities (20 CVEs) — patch and remediation guide — diagnosis and fix on Debian 11

Debian 11 — avahi — multiple vulnerabilities (20 CVEs) — patch and remediation guide

🟠 High   ⏱ 15–60 min  Last verified: 22 January 2023 Affected versions: Debian 11 (bullseye) 📖 ~4 min read  •  Source: Debian Security Tracker Related CVEs: CVE-2006-2288 CVE-2006-2289 CVE-2006-5461 CVE-2006-6870 CVE-2007-3372 CVE-2008-5081 CVE-2009-0758 CVE-2010-2244  +12 more Upstream summary: Avahi before 0.6.10 allows local users to cause a denial of service (mDNS/DNS-SD service disconnect) via […]

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Windows Server 2019 — KB5022836 — multiple vulnerabilities (20 CVEs) — patch and remediation guide — diagnosis and fix on Windows Server 2019

Windows Server 2019 — KB5022836 — 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 KB5022836 • MSRC update-guide entry Related CVEs: CVE-2023-21689 CVE-2023-21690 CVE-2023-21692 CVE-2023-21684 CVE-2023-21701 CVE-2023-21797 CVE-2023-21798 CVE-2023-21799  +12 more Affected components: Windows Server 2019 (Server Core installation) Table of contents Symptom & Impact Environment […]

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Ubuntu 22.04 — php-cas — vulnerability — patch and remediation guide — diagnosis and fix on Ubuntu 22.04

Ubuntu 22.04 — php-cas — vulnerability — patch and remediation guide

🟢 Low   ⏱ 5–15 min  Last verified: 22 January 2023 Affected versions: Ubuntu 22.04 (jammy) 📖 ~4 min read  •  Source: Ubuntu Security Notice USN-6913-1 Related CVEs: CVE-2022-39369 Upstream summary: Filip Hejsek discovered that phpCAS was using HTTP headers to determine the service URL used to validate tickets. A remote attacker could possibly use […]

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Oracle Linux 9 — opensc — vulnerability — patch and remediation guide — diagnosis and fix on Oracle Linux 9

Oracle Linux 9 — opensc — vulnerability — patch and remediation guide (ELSA-2023-7879)

🟡 Medium   ⏱ 10–30 min  Last verified: 22 January 2023 Affected versions: Oracle Linux 9 📖 ~4 min read  •  Source: ELSA advisory ELSA-2023-7879 Related CVEs: CVE-2023-40661 CVE-2023-40660 CVE-2023-4535 Table of contents Symptom & Impact Environment & Reproduction Root Cause Analysis Quick Triage Step-by-Step Diagnosis Solution – Primary Fix Solution – Alternative Approaches Verification […]

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Oracle Linux 8 — pcs — vulnerability — patch and remediation guide — diagnosis and fix on Oracle Linux 8

Oracle Linux 8 — pcs — vulnerability — patch and remediation guide (ELSA-2022-9754)

🟠 High   ⏱ 15–60 min  Last verified: 22 January 2023 Affected versions: Oracle Linux 8 📖 ~4 min read  •  Source: ELSA advisory ELSA-2022-9754 Related CVEs: CVE-2022-2735 Table of contents Symptom & Impact Environment & Reproduction Root Cause Analysis Quick Triage Step-by-Step Diagnosis Solution – Primary Fix Solution – Alternative Approaches Verification & Acceptance […]

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IBM AIX 7.1 — CVE-2022-34336 — xss — patch and remediation guide — diagnosis and fix on IBM AIX 7.1

IBM AIX 7.1 — CVE-2022-34336 — xss — patch and remediation guide

🟡 Medium   ⏱ 15–45 min  Last verified: 21 January 2023 Affected versions: IBM AIX 7.1 📖 ~4 min read  •  Source: NVD CVE-2022-34336, IBM Support Bulletin CVE: CVE-2022-34336 NVD summary: IBM WebSphere Application Server 7.0, 8.0, 8.5, and 9.0 is vulnerable to cross-site scripting. This vulnerability allows users to embed arbitrary JavaScript code in […]

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Alpine Linux edge — libosip2 — vulnerability — patch and remediation guide — diagnosis and fix on Alpine Linux edge

Alpine Linux edge — libosip2 — vulnerability — patch and remediation guide

🟡 Medium   ⏱ 10–30 min  Last verified: 25 May 2026 Affected versions: Alpine Linux edge / fixed in 5.3.1-r0 📖 ~4 min read  •  Source: Alpine secdb entry — libosip2 5.3.1-r0 Related CVEs: CVE-2022-41550 Upstream summary: Alpine community repository for vedge ships libosip2 5.3.1-r0 which addresses CVE-2022-41550. Table of contents Symptom & Impact Environment […]

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FreeBSD 13 — py38-slixmpp — vulnerability — patch and remediation guide — diagnosis and fix on FreeBSD 13

FreeBSD 13 — py38-slixmpp — vulnerability — patch and remediation guide

🟢 Low   ⏱ 5–15 min  Last verified: 21 January 2023 Affected versions: FreeBSD 13 📖 ~4 min read  •  Source: FreeBSD VuXML VuXML topic: Slixmpp — Lack of SSL Certificate hostname validation in XMLStream Related CVEs: CVE-2022-45197 Upstream summary: NIST reports: Slixmpp before 1.8.3 lacks SSL Certificate hostname validation in XMLStream, allowing an attacker […]

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