January 2023 - Page 48 of 71

Hinzufügen und Löschen von Benutzern unter CentOS 8 — step-by-step Linux tutorial on Progressive Robot

Hinzufügen und Löschen von Benutzern unter CentOS 8

Wenn Sie zum ersten Mal einen neuen Linux-Server einsetzen, ist das Hinzufügen und Entfernen von Benutzern oft eines der ersten Dinge, die Sie tun müssen. In diesem Leitfaden erfahren Sie, wie Sie auf einem CentOS 8-Server Benutzerkonten erstellen, sudo-Privilegien zuweisen…

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Debian 11 — libapache2-mod-perl2 — multiple vulnerabilities (3 CVEs) — patch and remediation guide — diagnosis and fix on Debian 11

Debian 11 — libapache2-mod-perl2 — multiple vulnerabilities (3 CVEs) — patch and remediation guide

🟡 Medium   ⏱ 10–30 min  Last verified: 11 January 2023 Affected versions: Debian 11 (bullseye) 📖 ~4 min read  •  Source: Debian Security Tracker Related CVEs: CVE-2007-1349 CVE-2009-0796 CVE-2011-2767 Upstream summary: PerlRun.pm in Apache mod_perl before 1.30, and RegistryCooker.pm in mod_perl 2.x, does not properly escape PATH_INFO before use in a regular expression, which […]

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

Oracle Linux 9 — thunderbird — vulnerability — patch and remediation guide (ELSA-2022-5778)

🟠 High   ⏱ 15–60 min  Last verified: 11 January 2023 Affected versions: Oracle Linux 9 📖 ~4 min read  •  Source: ELSA advisory ELSA-2022-5778 Related CVEs: CVE-2022-36318 CVE-2022-36319 CVE-2022-2505 Table of contents Symptom & Impact Environment & Reproduction Root Cause Analysis Quick Triage Step-by-Step Diagnosis Solution – Primary Fix Solution – Alternative Approaches Verification […]

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How to Configure IPv6 Dual-Stack Networking on RHEL 8 — step-by-step RHEL 8 tutorial on Progressive Robot

How to Configure IPv6 Dual-Stack Networking on RHEL 8

IPv6 adoption has accelerated as IPv4 address exhaustion becomes more acute, and most modern Linux servers must support both protocols simultaneously in a dual-stack configuration. RHEL 8 ships with full IPv6 support in the kernel and in NetworkManager, making dual-stack setup straightforward with nmcli. Firewalld and the major web servers handle IPv6 natively once the […]

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Common Problems 117033

Ubuntu 22.04 LTS – swap does not activate after reboot – Fix & Prevention

🟡 Medium   ⏱ 5–30 min  Last verified: 10 January 2023 Affected versions: Ubuntu 22.04 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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Common Problems 114619

High CPU Usage by systemd-journald on Busy Hosts

🟡 Medium   ⏱ 5–30 min  Last verified: 10 January 2023 📖 ~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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