Linux

Ubuntu 20.04 — ca-certificates — multiple vulnerabilities (8 CVEs) — patch and remediation guide — diagnosis and fix on Ubuntu 20.04

Ubuntu 20.04 — ca-certificates — multiple vulnerabilities (8 CVEs) — patch and remediation guide

  • April 19, 2021
  • Linux
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🟡 Medium   ⏱ 10–30 min  Last verified: 25 May 2026 Affected versions: Ubuntu 20.04 (focal) 📖 ~4 min read  •  Source: Ubuntu Security Notice USN-7034-1 Related CVEs: https://launchpad.net/bugs/2081875 https://launchpad.net/bugs/2020089 https://launchpad.net/bugs/1998785 https://launchpad.net/bugs/1976631 https://launchpad.net/bugs/1944481 https://launchpad.net/bugs/1914064 https://launchpad.net/bugs/1900727 https://launchpad.net/bugs/1881533 Upstream summary: The ca-certificates package contained outdated CA certificates. This update refreshes the included certificates to those contained in […]

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

Oracle Linux 8 — samba — vulnerability — patch and remediation guide (ELSA-2021-4058)

  • April 19, 2021
  • Linux
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🟡 Medium   ⏱ 10–30 min  Last verified: 25 May 2026 Affected versions: Oracle Linux 8 📖 ~4 min read  •  Source: ELSA advisory ELSA-2021-4058 Related CVEs: CVE-2021-20254 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 Kerberos Authentication on RHEL 8 — step-by-step RHEL 8 tutorial on Progressive Robot

How to Configure Kerberos Authentication on RHEL 8

  • April 19, 2021
  • Linux
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Kerberos is a mature, ticket-based network authentication protocol that allows services and users to prove their identity to one another without transmitting passwords over the network. MIT Kerberos is the reference implementation and is packaged in RHEL 8’s default repositories. Setting up a Key Distribution Center (KDC) gives you a centralised authentication infrastructure that integrates […]

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AlmaLinux 8 — libcmis — multiple vulnerabilities (2 CVEs) — patch and remediation guide — diagnosis and fix on AlmaLinux 8

AlmaLinux 8 — libcmis — multiple vulnerabilities (2 CVEs) — patch and remediation guide

  • April 18, 2021
  • Linux
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🟢 Low   ⏱ 5–15 min  Last verified: 25 May 2026 Affected versions: AlmaLinux 8 📖 ~4 min read  •  Source: AlmaLinux ALSA ALSA-2020:4628 Related CVEs: CVE-2020-12802 CVE-2020-12803 Upstream summary: LibreOffice is an open source, community-developed office productivity suite. It includes key desktop applications, such as a word processor, a spreadsheet, a presentation manager, a […]

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

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

  • April 18, 2021
  • 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 ALAS2-2020-1521 Related CVEs: CVE-2020-12825 Upstream summary: A stack overflow flaw was found in libcroco. A service using libcroco's CSS parser could be crashed by a local, authenticated attacker, or an […]

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Oracle Linux 8 — SAN boot may fail when using an Emulex 32GB FC Adapter — diagnosis and fix on Oracle Linux 8

Oracle Linux 8 — SAN boot may fail when using an Emulex 32GB FC Adapter

  • April 18, 2021
  • Linux
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🟠 High   ⏱ 5–30 min  Last verified: 25 May 2026 Affected versions: Oracle Linux 8 📖 ~4 min read  •  Source: Oracle Bug 31898488 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 […]

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openSUSE Tumbleweed — libonig5 — multiple vulnerabilities (7 CVEs) — patch and remediation guide — diagnosis and fix on openSUSE Tumbleweed

openSUSE Tumbleweed — libonig5 — multiple vulnerabilities (7 CVEs) — patch and remediation guide

  • April 18, 2021
  • Linux
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🟠 High   ⏱ 15–60 min  Last verified: 25 May 2026 Affected versions: openSUSE Tumbleweed 📖 ~4 min read  •  Source: SUSE advisory SUSE-IU-2022:1093-1 (see also SUSE bugzilla) Related CVEs: CVE-2019-19203 CVE-2019-19204 CVE-2019-19246 CVE-2019-13224 CVE-2019-13225 CVE-2019-19012 CVE-2020-26159 Upstream summary: An issue was discovered in Oniguruma 6.x before 6.9.4_rc2. In the function gb18030_mbc_enc_len in file gb18030.c, […]

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How To Use Ansible to Install and Set Up WordPress with LAMP on Ubuntu 18.04 — step-by-step Linux tutorial on Progressive Robot

How To Use Ansible to Install and Set Up WordPress with LAMP on Ubuntu 18.04

  • April 18, 2021
  • Linux
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This guide explains how to use Ansible to automate the steps contained in our guide on How To Install WordPress with LAMP on Ubuntu 18.04. WordPress is the most popular CMS (content management system) on the internet, allowing users to set up flexible blogs and websites on top of a MySQL backend with PHP processing. After setup, almost all administration can be done through the web frontend.

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Ubuntu 16.04 — dojo — multiple vulnerabilities (4 CVEs) — patch and remediation guide — diagnosis and fix on Ubuntu 16.04

Ubuntu 16.04 — dojo — multiple vulnerabilities (4 CVEs) — patch and remediation guide

  • April 18, 2021
  • Linux
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🟡 Medium   ⏱ 10–30 min  Last verified: 25 May 2026 Affected versions: Ubuntu 16.04 (xenial) 📖 ~4 min read  •  Source: Ubuntu Security Notice USN-7569-1 Related CVEs: CVE-2021-23450 CVE-2020-4051 CVE-2019-10785 CVE-2018-15494 Upstream summary: It was discovered that Dojo did not correctly handle DataGrids. An attacker could possibly use this issue to execute arbitrary code. […]

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