Common Problems

Common Problems 117041

Ubuntu 22.04 LTS – NTP not synchronized causes Kerberos and TLS failures – Fix & Prevention

🟠 High   ⏱ 5–30 min  Last verified: 23 December 2022 Affected versions: Ubuntu 22.04 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 11 — libpam-radius-auth — multiple vulnerabilities (3 CVEs) — patch and remediation guide — diagnosis and fix on Debian 11

Debian 11 — libpam-radius-auth — multiple vulnerabilities (3 CVEs) — patch and remediation guide

🟡 Medium   ⏱ 10–30 min  Last verified: 23 December 2022 Affected versions: Debian 11 (bullseye) 📖 ~4 min read  •  Source: Debian Security Tracker Related CVEs: CVE-2004-1340 CVE-2005-0108 CVE-2015-9542 Upstream summary: Debian GNU/Linux 3.0 installs the libpam-radius-auth package with the pam_radius_auth.conf set to be world-readable, which allows local users to obtain sensitive information. Table […]

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Debian 11 — unshield — vulnerability — patch and remediation guide — diagnosis and fix on Debian 11

Debian 11 — unshield — vulnerability — patch and remediation guide

🟢 Low   ⏱ 5–15 min  Last verified: 23 December 2022 Affected versions: Debian 11 (bullseye) 📖 ~4 min read  •  Source: Debian Security Tracker Related CVEs: CVE-2015-1386 Upstream summary: Directory traversal vulnerability in unshield 1.0-1. Table of contents Symptom & Impact Environment & Reproduction Root Cause Analysis Quick Triage Step-by-Step Diagnosis Solution – Primary […]

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Common Problems 111665

Windows Server 2022 DHCP Scope Exhaustion Causes Lease Denials – Fix & Prevention

🟠 High   ⏱ 5–30 min  Last verified: 23 December 2022 Affected versions: Windows Server 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 […]

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Debian 11 — kiwix — vulnerability — patch and remediation guide — diagnosis and fix on Debian 11

Debian 11 — kiwix — vulnerability — patch and remediation guide

🟢 Low   ⏱ 5–15 min  Last verified: 23 December 2022 Affected versions: Debian 11 (bullseye) 📖 ~4 min read  •  Source: Debian Security Tracker Related CVEs: CVE-2015-1032 Upstream summary: Cross-site scripting (XSS) vulnerability in Kiwix before 0.9.1, when using kiwix-serve, allows remote attackers to inject arbitrary web script or HTML via the pattern parameter […]

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SLES 12 — unzip — multiple vulnerabilities (12 CVEs) — patch and remediation guide — diagnosis and fix on SLES 12

SLES 12 — unzip — multiple vulnerabilities (12 CVEs) — patch and remediation guide

🟠 High   ⏱ 15–60 min  Last verified: 23 December 2022 Affected versions: SLES 12 📖 ~4 min read  •  Source: SUSE advisory SUSE-SU-2015:0026-1 (see also SUSE bugzilla) Related CVEs: CVE-2014-8139 CVE-2014-8140 CVE-2014-8141 CVE-2014-9636 CVE-2018-1000035 CVE-2022-0529 CVE-2022-0530 CVE-2014-9913  +4 more Upstream summary: Heap-based buffer overflow in the CRC32 verification in Info-ZIP UnZip 6.0 and earlier […]

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Oracle Linux 8 — Unbreakable Enterprise kernel — vulnerability — patch and remediation guide — diagnosis and fix on Oracle Linux 8

Oracle Linux 8 — Unbreakable Enterprise kernel — vulnerability — patch and remediation guide (ELSA-2022-10022)

🟠 High   ⏱ 15–60 min  Last verified: 23 December 2022 Affected versions: Oracle Linux 8 📖 ~4 min read  •  Source: ELSA advisory ELSA-2022-10022 Related CVEs: CVE-2022-1184 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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AlmaLinux 9 — bcel — vulnerability — patch and remediation guide — diagnosis and fix on AlmaLinux 9

AlmaLinux 9 — bcel — vulnerability — patch and remediation guide

🟠 High   ⏱ 15–60 min  Last verified: 25 May 2026 Affected versions: AlmaLinux 9 📖 ~4 min read  •  Source: AlmaLinux ALSA ALSA-2023:0005 Related CVEs: CVE-2022-42920 Upstream summary: The Byte Code Engineering Library (Apache Commons BCEL) is intended to give users a convenient way to analyze, create, and manipulate (binary) Java class files (those […]

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Oracle Linux 9 — grub2 — vulnerability — patch and remediation guide — diagnosis and fix on Oracle Linux 9

Oracle Linux 9 — grub2 — vulnerability — patch and remediation guide (ELSA-2022-5099)

🟠 High   ⏱ 15–60 min  Last verified: 23 December 2022 Affected versions: Oracle Linux 9 📖 ~4 min read  •  Source: ELSA advisory ELSA-2022-5099 Related CVEs: CVE-2021-3695 CVE-2022-28737 CVE-2022-28734 CVE-2022-28736 CVE-2021-3696 CVE-2021-3697 Table of contents Symptom & Impact Environment & Reproduction Root Cause Analysis Quick Triage Step-by-Step Diagnosis Solution – Primary Fix Solution – […]

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Oracle Linux 9 — Unbreakable Enterprise kernel — vulnerability — patch and remediation guide — diagnosis and fix on Oracle Linux 9

Oracle Linux 9 — Unbreakable Enterprise kernel — vulnerability — patch and remediation guide (ELSA-2022-10022)

🟠 High   ⏱ 15–60 min  Last verified: 23 December 2022 Affected versions: Oracle Linux 9 📖 ~4 min read  •  Source: ELSA advisory ELSA-2022-10022 Related CVEs: CVE-2022-1184 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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