Logging Monitoring

IBM AIX 7.3 — CVE-2021-29723 — vulnerability — patch and remediation guide — diagnosis and fix on IBM AIX 7.3

IBM AIX 7.3 — CVE-2021-29723 — vulnerability — patch and remediation guide

🟠 High   ⏱ 30–90 min  Last verified: 23 October 2022 Affected versions: IBM AIX 7.3 📖 ~4 min read  •  Source: NVD CVE-2021-29723, IBM Support Bulletin CVE: CVE-2021-29723 NVD summary: IBM Sterling Secure Proxy 6.0.1, 6.0.2, 2.4.3.2, and 3.4.3.2 uses weaker than expected cryptographic algorithms that could allow an attacker to decrypt highly sensitive […]

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

Oracle Linux 9 — GraalVM — vulnerability — patch and remediation guide (ELSA-2023-12316)

🟠 High   ⏱ 15–60 min  Last verified: 23 October 2022 Affected versions: Oracle Linux 9 📖 ~4 min read  •  Source: ELSA advisory ELSA-2023-12316 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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How to Configure GitHub Actions Self-Hosted Runner on Debian 11 — step-by-step Debian 11 tutorial on Progressive Robot

How to Configure GitHub Actions Self-Hosted Runner on Debian 11

Introduction Deploying configure github actions self-hosted runner on debian 11 on a Debian 11 Bullseye machine is straightforward thanks to Debian’s policy-compliant packaging. Unlike rpm-based distributions, Debian stores configuration helpers in /etc/default/, uses update-rc.d for older init scripts, and provides dpkg-reconfigure for interactive package configuration. This tutorial stays on the systemd path throughout. Prerequisites You […]

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Common Problems 118512

Ubuntu 16.04 Kernel Panic on Boot After HWE Upgrade

🟡 Medium   ⏱ 5–30 min  Last verified: 22 October 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 — geomview — vulnerability — patch and remediation guide — diagnosis and fix on Debian 11

Debian 11 — geomview — vulnerability — patch and remediation guide

🟢 Low   ⏱ 5–15 min  Last verified: 22 October 2022 Affected versions: Debian 11 (bullseye) 📖 ~4 min read  •  Source: Debian Security Tracker Related CVEs: CVE-2017-17530 Upstream summary: common/help.c in Geomview 1.9.5 does not validate strings before launching the program specified by the BROWSER environment variable, which might allow remote attackers to conduct […]

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Common Problems 116998

Ubuntu 22.04 LTS – SSH connection refused after reboot – Fix & Prevention

🟠 High   ⏱ 5–30 min  Last verified: 22 October 2022 Affected versions: Ubuntu 22.04 LTS (Jammy) 📖 ~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 […]

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Common Problems 114569

Postfix Cannot Send Mail Due To DNS Or Relay Policy

🟡 Medium   ⏱ 5–30 min  Last verified: 22 October 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 — zziplib — multiple vulnerabilities (20 CVEs) — patch and remediation guide — diagnosis and fix on Debian 11

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

🟠 High   ⏱ 15–60 min  Last verified: 22 October 2022 Affected versions: Debian 11 (bullseye) 📖 ~4 min read  •  Source: Debian Security Tracker Related CVEs: CVE-2007-1614 CVE-2017-5974 CVE-2017-5975 CVE-2017-5976 CVE-2017-5977 CVE-2017-5978 CVE-2017-5979 CVE-2017-5980  +12 more Upstream summary: Stack-based buffer overflow in the zzip_open_shared_io function in zzip/file.c in ZZIPlib Library before 0.13.49 allows user-assisted […]

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How to Use IBM Tivoli Access Manager on IBM AIX 7.3 — step-by-step IBM AIX 7.3 tutorial on Progressive Robot

How to Use IBM Tivoli Access Manager 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 use ibm tivoli access manager on IBM AIX 7.3 […]

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Common Problems 111769

Windows Server 2022 — TLS Handshake Failures Break LDAPS and Web Services After Cipher Changes — Fix & Prevention

🟠 High   ⏱ 5–30 min  Last verified: 22 October 2022 Affected versions: Windows Server 2022 📖 ~1 min read Table of contents Symptom & Impact Quick Checks Deep Diagnosis Primary Fix Verification Prevention & Hardening Symptom & Impact Clients fail secure connections with handshake errors after TLS policy hardening removes required protocol/cipher overlap. LDAPS […]

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