Logging Monitoring

Oracle Linux 8 — SELinux: "Class bpf not defined in policy" and "Class xdp_socket not defined in policy" errors occur during a boot — diagnosis and fix on Oracle Linux 8

Oracle Linux 8 — SELinux: “Class bpf not defined in policy” and “Class xdp_socket not defined in policy” errors occur during a boot

🟠 High   ⏱ 5–30 min  Last verified: 25 March 2022 Affected versions: Oracle Linux 8 📖 ~4 min read  •  Source: Oracle Bug 29502976 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 […]

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FreeBSD 13 — php52-exif — multiple vulnerabilities (2 CVEs) — patch and remediation guide — diagnosis and fix on FreeBSD 13

FreeBSD 13 — php52-exif — multiple vulnerabilities (2 CVEs) — patch and remediation guide

🟢 Low   ⏱ 5–15 min  Last verified: 25 March 2022 Affected versions: FreeBSD 13 📖 ~4 min read  •  Source: FreeBSD VuXML VuXML topic: php — multiple vulnerabilities Related CVEs: CVE-2011-4566 CVE-2011-4885 Upstream summary: php development team reports: Security Enhancements and Fixes in PHP 5.3.9: Added max_input_vars directive to prevent attacks based on hash […]

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FreeBSD 13 — vault — multiple vulnerabilities (2 CVEs) — patch and remediation guide — diagnosis and fix on FreeBSD 13

FreeBSD 13 — vault — multiple vulnerabilities (2 CVEs) — patch and remediation guide

🟢 Low   ⏱ 5–15 min  Last verified: 25 March 2022 Affected versions: FreeBSD 13 📖 ~4 min read  •  Source: FreeBSD VuXML VuXML topic: vault — unauthenticated license read Related CVEs: CVE-2020-35177 CVE-2021-27668 Upstream summary: vault developers report: Limited Unauthenticated License Read: We addressed a security vulnerability that allowed for the unauthenticated reading of […]

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

Debian 11 — pywebdav — vulnerability — patch and remediation guide

🟢 Low   ⏱ 5–15 min  Last verified: 25 March 2022 Affected versions: Debian 11 (bullseye) 📖 ~4 min read  •  Source: Debian Security Tracker Related CVEs: CVE-2011-0432 Upstream summary: Multiple SQL injection vulnerabilities in the get_userinfo method in the MySQLAuthHandler class in DAVServer/mysqlauth.py in PyWebDAV before 0.9.4.1 allow remote attackers to execute arbitrary SQL […]

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AlmaLinux 8 — ibus-table — vulnerability — patch and remediation guide — diagnosis and fix on AlmaLinux 8

AlmaLinux 8 — ibus-table — 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-2021:1948 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 — libapache-gallery-perl — vulnerability — patch and remediation guide — diagnosis and fix on Debian 11

Debian 11 — libapache-gallery-perl — vulnerability — patch and remediation guide

🟢 Low   ⏱ 5–15 min  Last verified: 25 March 2022 Affected versions: Debian 11 (bullseye) 📖 ~4 min read  •  Source: Debian Security Tracker Related CVEs: CVE-2003-0771 Upstream summary: Gallery.pm in Apache::Gallery (aka A::G) uses predictable temporary filenames when running Inline::C, which allows local users to execute arbitrary code by creating and modifying the […]

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

Debian 11 — purity — vulnerability — patch and remediation guide

🟢 Low   ⏱ 5–15 min  Last verified: 25 March 2022 Affected versions: Debian 11 (bullseye) 📖 ~4 min read  •  Source: Debian Security Tracker Related CVEs: CVE-2002-1124 Upstream summary: Multiple buffer overflows in purity 1-16 allow local users to gain privileges and modify high scores tables. Table of contents Symptom & Impact Environment & […]

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Common Problems 120611

Debian 11 – Conflicting Time Services Cause Unstable Sync – Single Authority Model

🟡 Medium   ⏱ 5–30 min  Last verified: 25 March 2022 Affected versions: Debian 11 📖 ~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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Ubuntu 20.04 — zabbix — multiple vulnerabilities (11 CVEs) — patch and remediation guide — diagnosis and fix on Ubuntu 20.04

Ubuntu 20.04 — zabbix — multiple vulnerabilities (11 CVEs) — patch and remediation guide

🟠 High   ⏱ 15–60 min  Last verified: 25 March 2022 Affected versions: Ubuntu 20.04 (focal) 📖 ~4 min read  •  Source: Ubuntu Security Notice USN-6751-1 Related CVEs: CVE-2022-35229 CVE-2022-35230 CVE-2014-3005 CVE-2016-10134 CVE-2016-10742 CVE-2016-4338 CVE-2017-2824 CVE-2017-2825  +3 more Upstream summary: It was discovered that Zabbix incorrectly handled input data in the discovery and graphs pages. […]

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