Security Hardening

Amazon Linux 2023 — libvpx — multiple vulnerabilities (4 CVEs) — patch and remediation guide — diagnosis and fix on Amazon Linux 2023

Amazon Linux 2023 — libvpx — multiple vulnerabilities (4 CVEs) — patch and remediation guide

🟠 High   ⏱ 15–60 min  Last verified: 25 May 2026 Affected versions: Amazon Linux 2023 📖 ~4 min read  •  Source: Amazon Linux advisory ALAS2023-2025-1023 Related CVEs: CVE-2025-5283 CVE-2023-6349 CVE-2024-5197 CVE-2023-44488 Upstream summary: Use after free in libvpx in Google Chrome prior to 137.0.7151.55 allowed a remote attacker to potentially exploit heap corruption via […]

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

Debian 11 — node-lodash — multiple vulnerabilities (10 CVEs) — patch and remediation guide

🟠 High   ⏱ 15–60 min  Last verified: 27 December 2025 Affected versions: Debian 11 (bullseye) 📖 ~4 min read  •  Source: Debian Security Tracker Related CVEs: CVE-2018-16487 CVE-2018-3721 CVE-2019-1010266 CVE-2019-10744 CVE-2020-28500 CVE-2020-8203 CVE-2021-23337 CVE-2025-13465  +2 more Upstream summary: A prototype pollution vulnerability was found in lodash <4.17.11 where the functions merge, mergeWith, and defaultsDeep […]

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Debian 13 — nut — vulnerability — patch and remediation guide — diagnosis and fix on Debian 13

Debian 13 — nut — vulnerability — patch and remediation guide

🟢 Low   ⏱ 5–15 min  Last verified: 27 December 2025 Affected versions: Debian 13 (trixie) 📖 ~4 min read  •  Source: Debian Security Tracker Related CVEs: CVE-2012-2944 Upstream summary: Buffer overflow in the addchar function in common/parseconf.c in upsd in Network UPS Tools (NUT) before 2.6.4 allows remote attackers to execute arbitrary code or […]

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Debian 11 — golang-golang-x-oauth2 — vulnerability — patch and remediation guide — diagnosis and fix on Debian 11

Debian 11 — golang-golang-x-oauth2 — vulnerability — patch and remediation guide

🟢 Low   ⏱ 5–15 min  Last verified: 27 December 2025 Affected versions: Debian 11 (bullseye) 📖 ~4 min read  •  Source: Debian Security Tracker Related CVEs: CVE-2025-22868 Upstream summary: An attacker can pass a malicious malformed token which causes unexpected memory to be consumed during parsing. Table of contents Symptom & Impact Environment & […]

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Debian 11 — apt-cacher-ng — multiple vulnerabilities (5 CVEs) — patch and remediation guide — diagnosis and fix on Debian 11

Debian 11 — apt-cacher-ng — multiple vulnerabilities (5 CVEs) — patch and remediation guide

🟡 Medium   ⏱ 10–30 min  Last verified: 27 December 2025 Affected versions: Debian 11 (bullseye) 📖 ~4 min read  •  Source: Debian Security Tracker Related CVEs: CVE-2014-4510 CVE-2017-7443 CVE-2020-5202 CVE-2025-11146 CVE-2025-11147 Upstream summary: Cross-site scripting (XSS) vulnerability in job.cc in apt-cacher-ng 0.7.26 allows remote attackers to inject arbitrary web script or HTML via a […]

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AlmaLinux 8 — objectweb-pom — multiple vulnerabilities (2 CVEs) — patch and remediation guide — diagnosis and fix on AlmaLinux 8

AlmaLinux 8 — objectweb-pom — multiple vulnerabilities (2 CVEs) — patch and remediation guide

🟠 High   ⏱ 15–60 min  Last verified: 25 May 2026 Affected versions: AlmaLinux 8 📖 ~4 min read  •  Source: AlmaLinux ALSA ALSA-2025:9318 Related CVEs: CVE-2019-10086 CVE-2025-48734 Upstream summary: The javapackages-tools packages provide macros and scripts to support Java packaging. Security Fix(es): * apache-commons-beanutils: does not suppresses the class property in PropertyUtilsBean by default […]

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Common Problems 114113

SSSD offline authentication intermittently fails

🟠 High   ⏱ 5–30 min  Last verified: 27 December 2025 Affected versions: RHEL 10.0 RHEL 10.1 📖 ~1 min read Table of contents Problem Summary Symptoms Diagnostics Root Cause Primary Fix Verification Prevention Rollback Automation Command Reference Escalation Related Notes Problem Summary Domain users cannot log in during directory service outages. Symptoms pam_sss errors […]

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Ubuntu 16.04 — libsoup2.4 — multiple vulnerabilities (20 CVEs) — patch and remediation guide — diagnosis and fix on Ubuntu 16.04

Ubuntu 16.04 — libsoup2.4 — multiple vulnerabilities (20 CVEs) — patch and remediation guide

🟠 High   ⏱ 15–60 min  Last verified: 27 December 2025 Affected versions: Ubuntu 16.04 (xenial) 📖 ~4 min read  •  Source: Ubuntu Security Notice USN-7643-1 Related CVEs: CVE-2025-4969 CVE-2025-32914 CVE-2025-4945 CVE-2025-32907 CVE-2025-4948 CVE-2025-32053 CVE-2024-52531 CVE-2025-32052  +12 more Upstream summary: Jan Różański discovered that libsoup incorrectly handled range headers in an HTTP request. An attacker […]

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Oracle Linux 9 — redis:7 — vulnerability — patch and remediation guide — diagnosis and fix on Oracle Linux 9

Oracle Linux 9 — redis:7 — vulnerability — patch and remediation guide (ELSA-2025-7429)

🟠 High   ⏱ 15–60 min  Last verified: 27 December 2025 Affected versions: Oracle Linux 9 📖 ~4 min read  •  Source: ELSA advisory ELSA-2025-7429 Related CVEs: CVE-2025-21605 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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Rocky Linux 9 — python-kdcproxy — multiple vulnerabilities (2 CVEs) — patch and remediation guide — diagnosis and fix on Rocky Linux 9

Rocky Linux 9 — python-kdcproxy — multiple vulnerabilities (2 CVEs) — patch and remediation guide

🟠 High   ⏱ 15–60 min  Last verified: 25 May 2026 Affected versions: Rocky Linux 9 📖 ~4 min read  •  Source: Rocky Linux RXSA RLSA-2025:21139 Related CVEs: CVE-2025-59088 CVE-2025-59089 Upstream summary: Python is an interpreted, interactive, object-oriented programming language, which includes modules, classes, exceptions, very high level dynamic data types and dynamic typing. Python […]

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