chris

Alpine Linux edge — tmux — vulnerability — patch and remediation guide — diagnosis and fix on Alpine Linux edge

Alpine Linux edge — tmux — vulnerability — patch and remediation guide

🟡 Medium   ⏱ 10–30 min  Last verified: 25 May 2026 Affected versions: Alpine Linux edge / fixed in 3.1c-r0 📖 ~4 min read  •  Source: Alpine secdb entry — tmux 3.1c-r0 Related CVEs: CVE-2020-27347 Upstream summary: Alpine main repository for vedge ships tmux 3.1c-r0 which addresses CVE-2020-27347. Table of contents Symptom & Impact Environment […]

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

Oracle Linux 8 — thunderbird — vulnerability — patch and remediation guide (ELSA-2020-5398)

🟠 High   ⏱ 15–60 min  Last verified: 18 June 2021 Affected versions: Oracle Linux 8 📖 ~4 min read  •  Source: ELSA advisory ELSA-2020-5398 Related CVEs: CVE-2020-26970 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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FreeBSD 12 — mysql56-server — multiple vulnerabilities (20 CVEs) — patch and remediation guide — diagnosis and fix on FreeBSD 12

FreeBSD 12 — mysql56-server — multiple vulnerabilities (20 CVEs) — patch and remediation guide

🟠 High   ⏱ 15–60 min  Last verified: 18 June 2021 Affected versions: FreeBSD 12 📖 ~4 min read  •  Source: FreeBSD VuXML VuXML topic: MySQL — Multiple vulnerabilities Related CVEs: CVE-2015-3194 CVE-2015-4792 CVE-2015-4802 CVE-2015-4807 CVE-2015-4815 CVE-2015-4826 CVE-2015-4830 CVE-2015-4836  +12 more Upstream summary: Oracle reports: This Critical Patch Update contains 49 new security patches for […]

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Amazon Linux 2 — emr-puppet — vulnerability — patch and remediation guide — diagnosis and fix on Amazon Linux 2

Amazon Linux 2 — emr-puppet — vulnerability — patch and remediation guide

🟡 Medium   ⏱ 10–30 min  Last verified: 25 May 2026 Affected versions: Amazon Linux 2 📖 ~4 min read  •  Source: Amazon Linux advisory ALAS2EMR-PUPPET-2023-001 Related CVEs: CVE-2021-27025 Upstream summary: A flaw was discovered in Puppet Agent where the agent may silently ignore Augeas settings or may be vulnerable to a Denial of Service […]

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Cómo instalar y utilizar Ansible en Ubuntu 20.04 — step-by-step Linux tutorial on Progressive Robot

Cómo instalar y utilizar Ansible en Ubuntu 20.04

Los sistemas de administración de configuraciones están diseñados para simplificar el proceso de control de un gran número de servidores, para los administradores y los equipos de operaciones. Le permiten controlar muchos sistemas diferentes de forma automatizada desde una…

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FreeBSD 13 — zhTW-linux-mozillafirebird — multiple vulnerabilities (20 CVEs) — patch and remediation guide — diagnosis and fix on FreeBSD 13

FreeBSD 13 — zhTW-linux-mozillafirebird — multiple vulnerabilities (20 CVEs) — patch and remediation guide

🟠 High   ⏱ 15–60 min  Last verified: 18 June 2021 Affected versions: FreeBSD 13 📖 ~4 min read  •  Source: FreeBSD VuXML VuXML topic: firefox & mozilla — multiple vulnerabilities Related CVEs: CVE-2004-0762 CVE-2004-0765 CVE-2004-0904 CVE-2004-0905 CVE-2004-0908 CVE-2004-0909 CVE-2004-1156 CVE-2004-1157  +12 more Upstream summary: A Mozilla Foundation Security Advisory reports of multiple issues: Heap […]

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Amazon Linux 2 — kernel-livepatch-4.14.243-185.433 — vulnerability — patch and remediation guide — diagnosis and fix on Amazon Linux 2

Amazon Linux 2 — kernel-livepatch-4.14.243-185.433 — vulnerability — patch and remediation guide

🟠 High   ⏱ 15–60 min  Last verified: 25 May 2026 Affected versions: Amazon Linux 2 📖 ~4 min read  •  Source: Amazon Linux advisory ALAS2LIVEPATCH-2021-062 Related CVEs: CVE-2021-40490 Upstream summary: No CVE associated with this advisory Table of contents Symptom & Impact Environment & Reproduction Root Cause Analysis Quick Triage Step-by-Step Diagnosis Solution – […]

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Initial Server Setup with RHEL 8 — step-by-step RHEL 8 tutorial on Progressive Robot

Initial Server Setup with RHEL 8

After provisioning a new RHEL 8 server, taking a few minutes to harden and configure the system goes a long way toward keeping it stable and secure. This guide walks you through the essential post-installation steps: updating packages, setting a hostname and timezone, locking down SSH, creating a non-root administrative user, and confirming that SELinux […]

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Oracle Linux 8 — kernel — security and stability fixes — required update — diagnosis and fix on Oracle Linux 8

Oracle Linux 8 — kernel — security and stability fixes — required update (ELSA-2019-1479)

🟠 High   ⏱ 15–60 min  Last verified: 17 June 2021 Affected versions: Oracle Linux 8 📖 ~4 min read  •  Source: ELSA advisory ELSA-2019-1479 Related CVEs: CVE-2019-9213 CVE-2019-11479 CVE-2019-11477 CVE-2019-11478 Table of contents Symptom & Impact Environment & Reproduction Root Cause Analysis Quick Triage Step-by-Step Diagnosis Solution – Primary Fix Solution – Alternative Approaches […]

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