Linux

Konfigurieren der SSH-Schlüssel-basierten Authentifizierung auf einem Linux-Server — step-by-step Linux tutorial on Progressive Robot

Konfigurieren der SSH-Schlüssel-basierten Authentifizierung auf einem Linux-Server

  • July 30, 2021
  • Linux
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SSH, oder Secure Shell, ist die häufigste Art der Verwaltung von Remote-Linux-Servern. Obwohl der Daemon die passwortbasierte Authentifizierung erlaubt, kann die Freigabe eines passwortgeschützten Kontos für das Netzwerk Ihren Server für Brute-Force-Angriffe öffnen. In diesem Leitfaden zeigen wir, wie Sie Ihren Server mit SSH-Schlüsseln konfigurieren, was die empfohlene Authentifizierungsmethode ist. Dies sind für Angreifer viel schwieriger zu umgehen, sodass Sie einen sichereren Anmeldemechanis

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

AlmaLinux 8 — nispor — vulnerability — patch and remediation guide

  • July 30, 2021
  • Linux
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🟡 Medium   ⏱ 10–30 min  Last verified: 25 May 2026 Affected versions: AlmaLinux 8 📖 ~4 min read  •  Source: AlmaLinux ALSA ALEA-2022:1881 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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SLES 12 — clone-master-clean-up — vulnerability — patch and remediation guide — diagnosis and fix on SLES 12

SLES 12 — clone-master-clean-up — vulnerability — patch and remediation guide

  • July 30, 2021
  • Linux
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🟡 Medium   ⏱ 10–30 min  Last verified: 30 July 2021 Affected versions: SLES 12 📖 ~4 min read  •  Source: SUSE advisory SUSE-SU-2022:3667-1 (see also SUSE bugzilla) Related CVEs: CVE-2021-32000 Upstream summary: A UNIX Symbolic Link (Symlink) Following vulnerability in the clone-master-clean-up.sh script of clone-master-clean-up in SUSE Linux Enterprise Server 12 SP3, SUSE Linux […]

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Gentoo Linux — app-misc/screen — multiple vulnerabilities (2 CVEs) — patch and remediation guide — diagnosis and fix on Gentoo Linux

Gentoo Linux — app-misc/screen — multiple vulnerabilities (2 CVEs) — patch and remediation guide

  • July 30, 2021
  • Linux
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🟡 Medium   ⏱ 10–30 min  Last verified: 25 May 2026 Affected versions: Gentoo Linux 📖 ~4 min read  •  Source: Gentoo GLSA GLSA-202105-11 Related CVEs: CVE-2021-26937 CVE-2020-9366 Upstream summary: It was discovered that GNU screen did not properly handle certain UTF-8 character sequences. Table of contents Symptom & Impact Environment & Reproduction Root Cause […]

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Rocky Linux 8 — lldpd — vulnerability — patch and remediation guide — diagnosis and fix on Rocky Linux 8

Rocky Linux 8 — lldpd — vulnerability — patch and remediation guide

  • July 30, 2021
  • Linux
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🟡 Medium   ⏱ 10–30 min  Last verified: 25 May 2026 Affected versions: Rocky Linux 8 📖 ~4 min read  •  Source: Rocky Linux RXSA RLBA-2024:5287 Upstream summary: LLDP is an industry standard protocol designed to supplant proprietary Link-Layer protocols such as EDP or CDP. The goal of LLDP is to provide an inter-vendor compatible […]

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Oracle Linux 8 — squid:4 — security and stability fixes — required update — diagnosis and fix on Oracle Linux 8

Oracle Linux 8 — squid:4 — security and stability fixes — required update (ELSA-2022-1939)

  • July 29, 2021
  • Linux
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🟡 Medium   ⏱ 10–30 min  Last verified: 29 July 2021 Affected versions: Oracle Linux 8 📖 ~4 min read  •  Source: ELSA advisory ELSA-2022-1939 Related CVEs: CVE-2021-28116 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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AlmaLinux 8 — dbus-python — vulnerability — patch and remediation guide — diagnosis and fix on AlmaLinux 8

AlmaLinux 8 — dbus-python — vulnerability — patch and remediation guide

  • July 29, 2021
  • Linux
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🟡 Medium   ⏱ 10–30 min  Last verified: 25 May 2026 Affected versions: AlmaLinux 8 📖 ~4 min read  •  Source: AlmaLinux ALSA ALBA-2019:3614 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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Common Problems 118099

Ubuntu 18.04 LTS Kernel Panic After Security Update

  • July 29, 2021
  • Linux
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🔴 Critical   ⏱ 5–30 min  Last verified: 29 July 2021 Affected versions: 18.04 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 118008

Ubuntu 18.04 LTS – ext4 filesystem remounts read-only after I/O errors – Fix & Prevention

  • July 29, 2021
  • Linux
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🔴 Critical   ⏱ 5–30 min  Last verified: 29 July 2021 Affected versions: Ubuntu 18.04 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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