Systemd Services

Amazon Linux 2 — exempi — multiple vulnerabilities (6 CVEs) — patch and remediation guide — diagnosis and fix on Amazon Linux 2

Amazon Linux 2 — exempi — multiple vulnerabilities (6 CVEs) — patch and remediation guide

  • September 30, 2020
  • Linux
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🟡 Medium   ⏱ 10–30 min  Last verified: 25 May 2026 Affected versions: Amazon Linux 2 📖 ~4 min read  •  Source: Amazon Linux advisory ALAS2-2023-2260 Related CVEs: CVE-2020-18651 CVE-2017-18233 CVE-2017-18234 CVE-2017-18236 CVE-2017-18238 CVE-2018-7730 Upstream summary: Buffer Overflow vulnerability in function ID3_Support::ID3v2Frame::getFrameValue in exempi 2.5.0 and earlier allows remote attackers to cause a denial of […]

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Amazon Linux 2 — velocity — vulnerability — patch and remediation guide — diagnosis and fix on Amazon Linux 2

Amazon Linux 2 — velocity — vulnerability — patch and remediation guide

  • September 30, 2020
  • Linux
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🟠 High   ⏱ 15–60 min  Last verified: 25 May 2026 Affected versions: Amazon Linux 2 📖 ~4 min read  •  Source: Amazon Linux advisory ALAS2-2021-1690 Related CVEs: CVE-2020-13936 Upstream summary: A flaw was found in velocity. An attacker, able to modify Velocity templates, may execute arbitrary Java code or run arbitrary system commands with […]

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Oracle Linux 8 — microcode_ctl security, — bug-fix and enhancement update — diagnosis and fix on Oracle Linux 8

Oracle Linux 8 — microcode_ctl security, — bug-fix and enhancement update (ELSA-2020-2431)

  • September 29, 2020
  • Linux
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🟡 Medium   ⏱ 10–30 min  Last verified: 29 September 2020 Affected versions: Oracle Linux 8 📖 ~4 min read  •  Source: ELSA advisory ELSA-2020-2431 Related CVEs: CVE-2020-0549 CVE-2020-0543 CVE-2020-0548 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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Common Problems 118055

Ubuntu 18.04 LTS – systemd service enters restart loop

  • September 29, 2020
  • Linux
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🟠 High   ⏱ 5–30 min  Last verified: 29 September 2020 Affected versions: Ubuntu 18.04 LTS Ubuntu 18.04 Ubuntu 18.04.6 📖 ~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 […]

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How to Configure LVM on Oracle Linux 8 — step-by-step Oracle Linux 8 tutorial on Progressive Robot

How to Configure LVM on Oracle Linux 8

Introduction Setting up configure lvm on oracle linux 8 on a Oracle Linux 8 server is a common task for system administrators, DevOps engineers, and site reliability engineers. This guide explains how to Configure LVM on Oracle Linux 8, with all the commands you need, the SELinux and firewalld considerations to keep in mind, and […]

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How to Use AIX Security Expert on IBM AIX 7.2 — step-by-step IBM AIX 7.2 tutorial on Progressive Robot

How to Use AIX Security Expert on IBM AIX 7.2

  • September 29, 2020
  • IBM AIX
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Introduction IBM AIX 7.2 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 7.2 introduces enhanced virtualization, security hardening, and cloud integration features. This guide covers how to use aix security expert on ibm aix 7.2 on […]

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How to Configure Kerberos Authentication on IBM AIX 7.2 — step-by-step IBM AIX 7.2 tutorial on Progressive Robot

How to Configure Kerberos Authentication on IBM AIX 7.2

  • September 29, 2020
  • IBM AIX
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Introduction IBM AIX 7.2 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 7.2 introduces enhanced virtualization, security hardening, and cloud integration features. This guide covers how to configure kerberos authentication on ibm aix 7.2 on IBM […]

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Ubuntu 16.04 — golang-websocket — vulnerability — patch and remediation guide — diagnosis and fix on Ubuntu 16.04

Ubuntu 16.04 — golang-websocket — vulnerability — patch and remediation guide

  • September 29, 2020
  • Linux
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🟢 Low   ⏱ 5–15 min  Last verified: 29 September 2020 Affected versions: Ubuntu 16.04 (xenial) 📖 ~4 min read  •  Source: Ubuntu Security Notice USN-6208-1 Related CVEs: CVE-2020-27813 Upstream summary: It was discovered that Gorilla WebSocket incorrectly handled decoding WebSocket frames. An attacker could possibly use this issue to cause a crash, resulting in […]

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Arch Linux — python-jinja — vulnerability — patch and remediation guide — diagnosis and fix on Arch Linux

Arch Linux — python-jinja — vulnerability — patch and remediation guide

  • September 29, 2020
  • Linux
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🟢 Low   ⏱ 5–15 min  Last verified: 25 May 2026 Affected versions: Arch Linux (rolling release) 📖 ~4 min read  •  Source: Arch ASA ASA-202102-19 Related CVEs: CVE-2020-28493 Upstream summary: Type: denial of service. Status: Fixed. Affected: 2.11.2-4. Fixed in: 2.11.3-1. Group: AVG-1523. Table of contents Symptom & Impact Environment & Reproduction Root Cause […]

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Ubuntu 18.04 — linux-aws-5.3 — multiple vulnerabilities (20 CVEs) — patch and remediation guide — diagnosis and fix on Ubuntu 18.04

Ubuntu 18.04 — linux-aws-5.3 — multiple vulnerabilities (20 CVEs) — patch and remediation guide

  • September 29, 2020
  • Linux
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🟠 High   ⏱ 15–60 min  Last verified: 29 September 2020 Affected versions: Ubuntu 18.04 (bionic) 📖 ~4 min read  •  Source: Ubuntu Security Notice USN-4489-1 Related CVEs: CVE-2020-14386 CVE-2020-14356 CVE-2020-12655 CVE-2020-12771 CVE-2020-15393 CVE-2020-24394 CVE-2019-16089 CVE-2019-19462  +12 more Upstream summary: Or Cohen discovered that the AF_PACKET implementation in the Linux kernel did not properly perform […]

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