Linux

How to Set Up VLAN Tagging on Debian 9 — step-by-step Debian 9 tutorial on Progressive Robot

How to Set Up VLAN Tagging on Debian 9

Introduction Debian 9 Stretch is built around the ethos of stability and free software. Setting up set up vlan tagging on debian 9 on Stretch leverages the same proven Debian packaging system that powers millions of servers worldwide, while benefiting from the latest upstream releases included in the Stretch freeze. Follow each step carefully and […]

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Настройка BIND в качестве DNS-сервера частной сети на базе Ubuntu 18.04 — step-by-step Linux tutorial on Progressive Robot

Настройка BIND в качестве DNS-сервера частной сети на базе Ubuntu 18.04

Важным элементом управления конфигурацией и инфраструктурой сервера является поддержание удобного способа просмотра сетевых интерфейсов и IP-адресов по имени с помощью настройки корректной системы доменных имен (DNS). Использование полных доменных имен (FQDN), а не IP-адреса, для…

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Debian 10 — mupdf — multiple vulnerabilities (2 CVEs) — patch and remediation guide — diagnosis and fix on Debian 10

Debian 10 — mupdf — multiple vulnerabilities (2 CVEs) — patch and remediation guide

🟢 Low   ⏱ 5–15 min  Last verified: 2 December 2020 Affected versions: Debian 10 (buster) 📖 ~4 min read  •  Source: Debian Security Tracker Related CVEs: CVE-2019-13290 CVE-2020-26519 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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How to Set Up a Load-Balanced PostgreSQL Cluster with Patroni on RHEL 7 — step-by-step RHEL 7 tutorial on Progressive Robot

How to Set Up a Load-Balanced PostgreSQL Cluster with Patroni on RHEL 7

How to Set Up a Load-Balanced PostgreSQL Cluster with Patroni on RHEL 7 Running a single PostgreSQL instance is a liability in any production environment — it is a single point of failure that, when it goes down, takes your entire application with it. Patroni is an open-source, Python-based high-availability solution for PostgreSQL that uses […]

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Debian 10 — postgresql-common — vulnerability — patch and remediation guide — diagnosis and fix on Debian 10

Debian 10 — postgresql-common — vulnerability — patch and remediation guide

🟢 Low   ⏱ 5–15 min  Last verified: 1 December 2020 Affected versions: Debian 10 (buster) 📖 ~4 min read  •  Source: Debian Security Tracker Related CVEs: CVE-2019-3466 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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Oracle Linux 8 — nodejs:18 security, bug fix, and — enhancement update — new behaviour and fixes — diagnosis and fix on Oracle Linux 8

Oracle Linux 8 — nodejs:18 security, bug fix, and — enhancement update — new behaviour and fixes (ELSA-2023-4536)

🟡 Medium   ⏱ 10–30 min  Last verified: 1 December 2020 Affected versions: Oracle Linux 8 📖 ~4 min read  •  Source: ELSA advisory ELSA-2023-4536 Related CVEs: CVE-2023-30581 CVE-2023-30588 CVE-2023-30590 CVE-2023-30589 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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Ubuntu 20.04 — musl — multiple vulnerabilities (2 CVEs) — patch and remediation guide — diagnosis and fix on Ubuntu 20.04

Ubuntu 20.04 — musl — multiple vulnerabilities (2 CVEs) — patch and remediation guide

🟢 Low   ⏱ 5–15 min  Last verified: 1 December 2020 Affected versions: Ubuntu 20.04 (focal) 📖 ~4 min read  •  Source: Ubuntu Security Notice USN-5990-1 Related CVEs: CVE-2019-14697 CVE-2020-28928 Upstream summary: It was discovered that musl did not handle certain i386 math functions properly. An attacker could use this vulnerability to cause a denial […]

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What is APT? — step-by-step Linux tutorial on Progressive Robot

What is APT?

Advanced Package Tool, more commonly known as “APT”, is a collection of tools used to install, update, remove, and otherwise manage software packages on Debian and its derivative operating systems, including Ubuntu and Linux Mint.

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SLES 15 — p11-kit — multiple vulnerabilities (3 CVEs) — patch and remediation guide — diagnosis and fix on SLES 15

SLES 15 — p11-kit — multiple vulnerabilities (3 CVEs) — patch and remediation guide

🟠 High   ⏱ 15–60 min  Last verified: 1 December 2020 Affected versions: SLES 15 📖 ~4 min read  •  Source: SUSE advisory SUSE-CU-2021:599-1 (see also SUSE bugzilla) Related CVEs: CVE-2020-29361 CVE-2020-29363 CVE-2020-29362 Upstream summary: An issue was discovered in p11-kit 0.21.1 through 0.23.21. Multiple integer overflows have been discovered in the array allocations in […]

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