Logging Monitoring

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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How to Configure Network Interface Settings with nmcli on RHEL 8 — step-by-step RHEL 8 tutorial on Progressive Robot

How to Configure Network Interface Settings with nmcli on RHEL 8

NetworkManager is the default network management stack on RHEL 8, and nmcli is its fully-featured command-line interface. Using nmcli, administrators can create, modify, activate, and delete network connections entirely from the terminal — no GUI or .ifcfg file editing required. This tutorial covers inspecting current network state, configuring a static IP address, managing connections, and […]

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Debian 11 — bsdgames — multiple vulnerabilities (2 CVEs) — patch and remediation guide — diagnosis and fix on Debian 11

Debian 11 — bsdgames — multiple vulnerabilities (2 CVEs) — patch and remediation guide

🟢 Low   ⏱ 5–15 min  Last verified: 22 December 2022 Affected versions: Debian 11 (bullseye) 📖 ~4 min read  •  Source: Debian Security Tracker Related CVEs: CVE-2006-1539 CVE-2006-1744 Upstream summary: Multiple buffer overflows in the checkscores function in scores.c in tetris-bsd in bsd-games before 2.17-r1 in Gentoo Linux might allow local users with games […]

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

Debian 11 — dstat — vulnerability — patch and remediation guide

🟢 Low   ⏱ 5–15 min  Last verified: 22 December 2022 Affected versions: Debian 11 (bullseye) 📖 ~4 min read  •  Source: Debian Security Tracker Related CVEs: CVE-2009-3894 Upstream summary: Multiple untrusted search path vulnerabilities in dstat before 0.7.0 allow local users to gain privileges via a Trojan horse Python module in (1) the current […]

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

Debian 11 — mgt — vulnerability — patch and remediation guide

🟢 Low   ⏱ 5–15 min  Last verified: 22 December 2022 Affected versions: Debian 11 (bullseye) 📖 ~4 min read  •  Source: Debian Security Tracker Related CVEs: CVE-2008-4972 Upstream summary: mailgo in mgt 2.31 allows local users to overwrite arbitrary files via a symlink attack on a /tmp/mailgo##### temporary file. Table of contents Symptom & […]

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Common Problems 112406

Windows Server 2019 — IIS WAS dependency failure prevents app pools loading — Fix & Prevention

🟠 High   ⏱ 5–30 min  Last verified: 22 December 2022 Affected versions: Windows Server 2019 📖 ~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 — ssldump — multiple vulnerabilities (2 CVEs) — patch and remediation guide — diagnosis and fix on Debian 11

Debian 11 — ssldump — multiple vulnerabilities (2 CVEs) — patch and remediation guide

🟢 Low   ⏱ 5–15 min  Last verified: 22 December 2022 Affected versions: Debian 11 (bullseye) 📖 ~4 min read  •  Source: Debian Security Tracker Related CVEs: CVE-2002-2207 CVE-2002-2227 Upstream summary: Buffer overflow in ssldump 0.9b2 and earlier, when running in decryption mode, allows remote attackers to execute arbitrary code via a long RSA PreMasterSecret. […]

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Common Problems 112400

Windows Server 2019 ReFS Metadata Corruption Warnings on Data Volume – Fix & Prevention

🟠 High   ⏱ 5–30 min  Last verified: 22 December 2022 Affected versions: Windows Server 2019 📖 ~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 — derby — multiple vulnerabilities (3 CVEs) — patch and remediation guide — diagnosis and fix on Debian 11

Debian 11 — derby — multiple vulnerabilities (3 CVEs) — patch and remediation guide

🟡 Medium   ⏱ 10–30 min  Last verified: 22 December 2022 Affected versions: Debian 11 (bullseye) 📖 ~4 min read  •  Source: Debian Security Tracker Related CVEs: CVE-2015-1832 CVE-2018-1313 CVE-2022-46337 Upstream summary: XML external entity (XXE) vulnerability in the SqlXmlUtil code in Apache Derby before 10.12.1.1, when a Java Security Manager is not in place, […]

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Common Problems 111739

Windows Server 2022 — Time Drift Exceeds Kerberos Tolerance and Causes Logon Failures — Fix & Prevention

🟠 High   ⏱ 5–30 min  Last verified: 22 December 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 Users and services fail authentication when server clocks drift beyond Kerberos tolerance. Scheduled tasks and service […]

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