Operations

Oracle Linux 8 — kernel security, bug fix, and — enhancement update — new behaviour and fixes — diagnosis and fix on Oracle Linux 8

Oracle Linux 8 — kernel security, bug fix, and — enhancement update — new behaviour and fixes (ELSA-2021-0558)

  • September 26, 2020
  • Linux
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🟠 High   ⏱ 15–60 min  Last verified: 26 September 2020 Affected versions: Oracle Linux 8 📖 ~4 min read  •  Source: ELSA advisory ELSA-2021-0558 Related CVEs: CVE-2020-25705 CVE-2020-14351 CVE-2020-29661 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 119079

Ubuntu 14.04 LTS PHP-FPM 502 Bad Gateway with Nginx

  • September 26, 2020
  • Linux
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🟡 Medium   ⏱ 5–30 min  Last verified: 26 September 2020 📖 ~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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Ubuntu 18.04 — ppp — multiple vulnerabilities (3 CVEs) — patch and remediation guide — diagnosis and fix on Ubuntu 18.04

Ubuntu 18.04 — ppp — multiple vulnerabilities (3 CVEs) — patch and remediation guide

  • September 26, 2020
  • Linux
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🟡 Medium   ⏱ 10–30 min  Last verified: 26 September 2020 Affected versions: Ubuntu 18.04 (bionic) 📖 ~4 min read  •  Source: Ubuntu Security Notice USN-4451-1 Related CVEs: CVE-2020-15704 CVE-2020-8597 CVE-2018-11574 Upstream summary: Thomas Chauchefoin working with Trend Micro´s Zero Day Initiative, discovered that ppp incorrectly handled module loading. A local attacker could use this […]

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How to Install Perl on IBM AIX 7.2 — step-by-step IBM AIX 7.2 tutorial on Progressive Robot

How to Install Perl on IBM AIX 7.2

  • September 26, 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 install perl on ibm aix 7.2 on IBM AIX […]

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How to Enable Brotli Compression in Nginx on Oracle Linux 8 — step-by-step Oracle Linux 8 tutorial on Progressive Robot

How to Enable Brotli Compression in Nginx on Oracle Linux 8

Introduction How to Enable Brotli Compression in Nginx on Oracle Linux 8 on Oracle Linux 8 provides administrators with a robust, enterprise-ready workflow that integrates cleanly with systemd, SELinux, firewalld, and the modern AppStream module system. In this tutorial we will walk through every step required, from package installation to verification, so that the resulting […]

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How to Set Up a File Server on Windows Server 2012 R2 — step-by-step Windows Server 2012 R2 tutorial on Progressive Robot

How to Set Up a File Server on Windows Server 2012 R2

How to Set Up a File Server on Windows Server 2012 R2 A file server is one of the most ubiquitous roles in any Windows Server environment, providing centralised, managed storage for user data, departmental shares, and application data. Windows Server 2012 R2 delivers an upgraded File and Storage Services role with SMB 3.0, File […]

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Ubuntu 14.04 — apt — multiple vulnerabilities (11 CVEs) — patch and remediation guide — diagnosis and fix on Ubuntu 14.04

Ubuntu 14.04 — apt — multiple vulnerabilities (11 CVEs) — patch and remediation guide

  • September 26, 2020
  • Linux
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🟠 High   ⏱ 15–60 min  Last verified: 26 September 2020 Affected versions: Ubuntu 14.04 (trusty) 📖 ~4 min read  •  Source: Ubuntu Security Notice USN-4667-2 Related CVEs: CVE-2020-27350 CVE-2020-3810 CVE-2019-3462 CVE-2016-1252 CVE-2014-7206 CVE-2014-6273 CVE-2014-0487 CVE-2014-0488  +3 more Upstream summary: USN-4667-1 fixed a vulnerability in APT. This update provides the corresponding update for Ubuntu 14.04 […]

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Ubuntu 14.04 — libzen — vulnerability — patch and remediation guide — diagnosis and fix on Ubuntu 14.04

Ubuntu 14.04 — libzen — vulnerability — patch and remediation guide

  • September 26, 2020
  • Linux
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🟢 Low   ⏱ 5–15 min  Last verified: 26 September 2020 Affected versions: Ubuntu 14.04 (trusty) 📖 ~4 min read  •  Source: Ubuntu Security Notice USN-6048-1 Related CVEs: CVE-2020-36646 Upstream summary: It was discovered that ZenLib doesn't check the return value of a specific operation before using it. An attacker could use a specially crafted […]

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How to Configure Data Centre Bridging (DCB) on Windows Server 2016 — step-by-step Windows Server 2016 tutorial on Progressive Robot

How to Configure Data Centre Bridging (DCB) on Windows Server 2016

How to Configure Windows Server 2016 DCB Data Center Bridging Data Center Bridging (DCB) is a set of IEEE standards that enhance Ethernet to provide a lossless fabric capable of carrying multiple types of traffic including storage, networking, and cluster communications over a single converged network. DCB enables the coexistence of latency-sensitive and high-bandwidth traffic […]

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Oracle Linux 8 — mod_auth_mellon — vulnerability — patch and remediation guide — diagnosis and fix on Oracle Linux 8

Oracle Linux 8 — mod_auth_mellon — vulnerability — patch and remediation guide (ELSA-2019-0985)

  • September 26, 2020
  • Linux
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🟠 High   ⏱ 15–60 min  Last verified: 26 September 2020 Affected versions: Oracle Linux 8 📖 ~4 min read  •  Source: ELSA advisory ELSA-2019-0985 Related CVEs: CVE-2019-3878 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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