Linux

Debian 10 — x11vnc — vulnerability — patch and remediation guide — diagnosis and fix on Debian 10

Debian 10 — x11vnc — vulnerability — patch and remediation guide

🟢 Low   ⏱ 5–15 min  Last verified: 19 June 2021 Affected versions: Debian 10 (buster) 📖 ~4 min read  •  Source: Debian Security Tracker Related CVEs: CVE-2020-29074 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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Ubuntu 20.04 — ring — multiple vulnerabilities (20 CVEs) — patch and remediation guide — diagnosis and fix on Ubuntu 20.04

Ubuntu 20.04 — ring — multiple vulnerabilities (20 CVEs) — patch and remediation guide

🟠 High   ⏱ 15–60 min  Last verified: 19 June 2021 Affected versions: Ubuntu 20.04 (focal) 📖 ~4 min read  •  Source: Ubuntu Security Notice USN-6422-1 Related CVEs: CVE-2021-37706 CVE-2021-43299 CVE-2021-43300 CVE-2021-43301 CVE-2021-43302 CVE-2021-43303 CVE-2021-43804 CVE-2021-43845  +12 more Upstream summary: It was discovered that Ring incorrectly handled certain inputs. If a user or an automated […]

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Создание и настройка центра сертификации (ЦС) в Ubuntu 20.04 — step-by-step Linux tutorial on Progressive Robot

Создание и настройка центра сертификации (ЦС) в Ubuntu 20.04

Центр сертификации (ЦС) — это служба, отвечающая за выдачу цифровых сертификатов удостоверения личности в Интернете. Хотя публичные ЦС часто используются для подтверждения подлинности сайтов и других общедоступных служб, для…

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Oracle Linux 8 — grub2 — vulnerability — patch and remediation guide — diagnosis and fix on Oracle Linux 8

Oracle Linux 8 — grub2 — vulnerability — patch and remediation guide (ELSA-2021-0696)

🟡 Medium   ⏱ 10–30 min  Last verified: 19 June 2021 Affected versions: Oracle Linux 8 📖 ~4 min read  •  Source: ELSA advisory ELSA-2021-0696 Related CVEs: CVE-2020-27779 CVE-2020-27749 CVE-2021-20225 CVE-2020-25632 CVE-2020-25647 CVE-2021-20233 Table of contents Symptom & Impact Environment & Reproduction Root Cause Analysis Quick Triage Step-by-Step Diagnosis Solution – Primary Fix Solution – […]

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Oracle Linux 8 — Unbreakable Enterprise kernel — vulnerability — patch and remediation guide — diagnosis and fix on Oracle Linux 8

Oracle Linux 8 — Unbreakable Enterprise kernel — vulnerability — patch and remediation guide (ELSA-2022-9199)

🟠 High   ⏱ 15–60 min  Last verified: 19 June 2021 Affected versions: Oracle Linux 8 📖 ~4 min read  •  Source: ELSA advisory ELSA-2022-9199 Related CVEs: CVE-2021-26341 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 Install the Latest MySQL on Ubuntu 16.04 — step-by-step Linux tutorial on Progressive Robot

How To Install the Latest MySQL on Ubuntu 16.04

MySQL is a prominent open source database management system used to store and retrieve data for a wide variety of popular applications. MySQL is the M in the LAMP stack, a commonly used set of open source software that also includes Linux, the Apache web server, and the PHP programming language.

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AlmaLinux 8 — osinfo-db-tools — vulnerability — patch and remediation guide — diagnosis and fix on AlmaLinux 8

AlmaLinux 8 — osinfo-db-tools — vulnerability — patch and remediation guide

🟡 Medium   ⏱ 10–30 min  Last verified: 25 May 2026 Affected versions: AlmaLinux 8 📖 ~4 min read  •  Source: AlmaLinux ALSA ALBA-2021:1939 Upstream summary: For detailed information on changes in this release, see the AlmaLinux Release Notes linked from the References section. Table of contents Symptom & Impact Environment & Reproduction Root Cause […]

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Debian 9 — exim4 — multiple vulnerabilities (7 CVEs) — patch and remediation guide — diagnosis and fix on Debian 9

Debian 9 — exim4 — multiple vulnerabilities (7 CVEs) — patch and remediation guide

🟡 Medium   ⏱ 10–30 min  Last verified: 19 June 2021 Affected versions: Debian 9 (stretch) 📖 ~4 min read  •  Source: Debian Security Tracker Related CVEs: CVE-2017-1000369 CVE-2017-16943 CVE-2018-6789 CVE-2019-10149 CVE-2019-13917 CVE-2019-15846 CVE-2020-12783 Table of contents Symptom & Impact Environment & Reproduction Root Cause Analysis Quick Triage Step-by-Step Diagnosis Solution – Primary Fix Solution […]

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How to Install Ruby with rbenv on RHEL 7 — step-by-step RHEL 7 tutorial on Progressive Robot

How to Install Ruby with rbenv on RHEL 7

How to Install Ruby with rbenv on RHEL 7 Ruby is a dynamic, expressive programming language favored for its clean syntax, productivity-oriented design, and thriving ecosystem. While RHEL 7’s system repositories provide a version of Ruby, it is typically outdated and may conflict with modern applications and gems that require a specific Ruby release. The […]

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

Oracle Linux 8 — sysstat — security and stability fixes — required update (ELSA-2023-2800)

🟡 Medium   ⏱ 10–30 min  Last verified: 18 June 2021 Affected versions: Oracle Linux 8 📖 ~4 min read  •  Source: ELSA advisory ELSA-2023-2800 Related CVEs: CVE-2022-39377 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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