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Common Problems 120551

Debian 11 – sudo Stops Working Due to Broken Permissions – Emergency Repair

🔴 Critical   ⏱ 5–30 min  Last verified: 9 September 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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Common Problems 118936

Ubuntu 14.04 LTS – boot drops to initramfs after unclean shutdown – Fix & Prevention

🟠 High   ⏱ 5–30 min  Last verified: 9 September 2022 Affected versions: Ubuntu 14.04 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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How to Set Up a Certificate Authority with OpenSSL on RHEL 9 — step-by-step RHEL 9 tutorial on Progressive Robot

How to Set Up a Certificate Authority with OpenSSL on RHEL 9

A private Certificate Authority (CA) lets you issue and manage TLS certificates for internal services without paying a public CA for every certificate. On RHEL 9, OpenSSL provides all the tools needed to build a two-tier CA hierarchy: a root CA (kept offline and highly protected) and an intermediate CA (used for day-to-day signing). This […]

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IBM AIX 7.3 — CVE-2008-2514 — buffer overflow — patch and remediation guide — diagnosis and fix on IBM AIX 7.3

IBM AIX 7.3 — CVE-2008-2514 — buffer overflow — patch and remediation guide

🟡 Medium   ⏱ 15–45 min  Last verified: 9 September 2022 Affected versions: IBM AIX 7.3 📖 ~4 min read  •  Source: NVD CVE-2008-2514, IBM Support Bulletin CVE: CVE-2008-2514 NVD summary: Buffer overflow in errpt in IBM AIX 5.2, 5.3, and 6.1 allows local users to gain privileges via unknown attack vectors. References: aix.software.ibm.com/aix/efixes/security/errpt_a   […]

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AlmaLinux 8 — boost — vulnerability — patch and remediation guide — diagnosis and fix on AlmaLinux 8

AlmaLinux 8 — boost — vulnerability — patch and remediation guide

🟡 Medium   ⏱ 10–30 min  Last verified: 25 May 2026 Affected versions: AlmaLinux 8 📖 ~4 min read  •  Source: AlmaLinux ALSA ALEA-2020:4731 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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How to Configure TCP/IP Networking on IBM AIX 7.3 — step-by-step IBM AIX 7.3 tutorial on Progressive Robot

How to Configure TCP/IP Networking on IBM AIX 7.3

Introduction IBM AIX 7.3 is the latest release of IBM’s enterprise-grade UNIX operating system, running on IBM Power Systems hardware. Known for its reliability, security, and performance in mission-critical environments, AIX 7.3 introduces enhanced virtualization, security hardening, and cloud integration features. This guide covers how to configure tcp/ip networking on IBM AIX 7.3 with practical […]

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FreeBSD 13 — fcron — multiple vulnerabilities (4 CVEs) — patch and remediation guide — diagnosis and fix on FreeBSD 13

FreeBSD 13 — fcron — multiple vulnerabilities (4 CVEs) — patch and remediation guide

🟡 Medium   ⏱ 10–30 min  Last verified: 9 September 2022 Affected versions: FreeBSD 13 📖 ~4 min read  •  Source: FreeBSD VuXML VuXML topic: fcron — multiple vulnerabilities Related CVEs: CVE-2004-1030 CVE-2004-1031 CVE-2004-1032 CVE-2004-1033 Upstream summary: An iDEFENSE Security Advisory states: Multiple vulnerabilities have been found in Fcron. File contents disclosure Configuration Bypass Vulnerability […]

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FreeBSD 13 — pecl-phar — vulnerability — patch and remediation guide — diagnosis and fix on FreeBSD 13

FreeBSD 13 — pecl-phar — vulnerability — patch and remediation guide

🟢 Low   ⏱ 5–15 min  Last verified: 9 September 2022 Affected versions: FreeBSD 13 📖 ~4 min read  •  Source: FreeBSD VuXML VuXML topic: pecl-phar — format string vulnerability Related CVEs: CVE-2010-2094 Upstream summary: Entry for CVE-2010-2094 says: Multiple format string vulnerabilities in the phar extension in PHP 5.3 before 5.3.2 allow context-dependent attackers […]

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Common Problems 114403

RHEL 9 systemctl service fails to start after reboot

🟡 Medium   ⏱ 5–30 min  Last verified: 9 September 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 & Cross-Refs References & Further […]

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Debian 11 — python-defaults — vulnerability — patch and remediation guide — diagnosis and fix on Debian 11

Debian 11 — python-defaults — vulnerability — patch and remediation guide

🟢 Low   ⏱ 5–15 min  Last verified: 9 September 2022 Affected versions: Debian 11 (bullseye) 📖 ~4 min read  •  Source: Debian Security Tracker Related CVEs: CVE-2008-4108 Upstream summary: Tools/faqwiz/move-faqwiz.sh (aka the generic FAQ wizard moving tool) in Python 2.4.5 might allow local users to overwrite arbitrary files via a symlink attack on a […]

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