December 2021 - Page 44 of 71

How to Install Ansible on RHEL 10 — step-by-step RHEL 10 tutorial on Progressive Robot

How to Install Ansible on RHEL 10

Introduction This tutorial demonstrates how to Install Ansible on RHEL 10 on RHEL 10. It is written for administrators who want a repeatable, well-explained walkthrough that goes beyond a bare command list and explains each configuration choice. Every command is tested against a freshly registered RHEL 10 system with the default AppStream repositories enabled. Prerequisites […]

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Debian 11 — lua5.4 — multiple vulnerabilities (13 CVEs) — patch and remediation guide — diagnosis and fix on Debian 11

Debian 11 — lua5.4 — multiple vulnerabilities (13 CVEs) — patch and remediation guide

🟠 High   ⏱ 15–60 min  Last verified: 25 May 2026 Affected versions: Debian 11 (bullseye) 📖 ~4 min read  •  Source: Debian Security Tracker Related CVEs: CVE-2020-15888 CVE-2020-15889 CVE-2020-15945 CVE-2020-24342 CVE-2020-24369 CVE-2020-24370 CVE-2020-24371 CVE-2021-43519  +5 more Upstream summary: Lua through 5.4.0 mishandles the interaction between stack resizes and garbage collection, leading to a heap-based […]

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Debian 11 — prosody — multiple vulnerabilities (20 CVEs) — patch and remediation guide — diagnosis and fix on Debian 11

Debian 11 — prosody — multiple vulnerabilities (20 CVEs) — patch and remediation guide

🟠 High   ⏱ 15–60 min  Last verified: 25 May 2026 Affected versions: Debian 11 (bullseye) 📖 ~4 min read  •  Source: Debian Security Tracker Related CVEs: CVE-2011-2205 CVE-2011-2531 CVE-2011-2532 CVE-2014-2744 CVE-2014-2745 CVE-2016-0756 CVE-2016-1231 CVE-2016-1232  +12 more Upstream summary: Prosody before 0.8.1 does not properly detect recursion during entity expansion, which allows remote attackers to […]

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Cómo instalar Nginx en Ubuntu 20.04 — step-by-step Linux tutorial on Progressive Robot

Cómo instalar Nginx en Ubuntu 20.04

Nginx es uno de los servidores web más populares del mundo y aloja algunos de los sitios más grandes y con mayor tráfico en Internet. Es una opción ligera que se puede utilizar como servidor web o proxy inverso. En esta guía, explicaremos cómo…

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Debian 11 — python2.7 — multiple vulnerabilities (20 CVEs) — patch and remediation guide — diagnosis and fix on Debian 11

Debian 11 — python2.7 — multiple vulnerabilities (20 CVEs) — patch and remediation guide

🟠 High   ⏱ 15–60 min  Last verified: 25 May 2026 Affected versions: Debian 11 (bullseye) 📖 ~4 min read  •  Source: Debian Security Tracker Related CVEs: CVE-2010-1634 CVE-2010-2089 CVE-2010-3492 CVE-2011-1521 CVE-2011-3389 CVE-2011-4940 CVE-2011-4944 CVE-2012-0845  +12 more Upstream summary: Multiple integer overflows in audioop.c in the audioop module in Python 2.6, 2.7, 3.1, and 3.2 […]

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Индексация, разделение и управление строками в JavaScript — step-by-step Javascript tutorial on Progressive Robot

Индексация, разделение и управление строками в JavaScript

В этом учебном модуле мы изучим разницу между примитивами строк и объектом String, узнаем об индексации строк, доступе к символам в строке и общих свойствах и методах, используемых при работе со строками.

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How to Implement Zero Trust Architecture on Windows Server 2019 — step-by-step Windows Server 2019 tutorial on Progressive Robot

How to Implement Zero Trust Architecture on Windows Server 2019

Zero Trust Principles on Windows Server 2019 Zero Trust is a security philosophy that abandons the assumption of implicit trust inside a network perimeter. Instead, every access request—whether from inside or outside the datacenter—must be verified, authorized, and continuously validated. On Windows Server 2019, Zero Trust is implemented through a layered set of controls: strong […]

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AlmaLinux 8 — iputils — vulnerability — patch and remediation guide — diagnosis and fix on AlmaLinux 8

AlmaLinux 8 — iputils — 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-2022:2086 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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Oracle Linux 8 — rust-toolset:ol8 security, bug fix, and — enhancement update — new behaviour and fixes — diagnosis and fix on Oracle Linux 8

Oracle Linux 8 — rust-toolset:ol8 security, bug fix, and — enhancement update — new behaviour and fixes (ELSA-2021-3063)

🟡 Medium   ⏱ 10–30 min  Last verified: 25 May 2026 Affected versions: Oracle Linux 8 📖 ~4 min read  •  Source: ELSA advisory ELSA-2021-3063 Related CVEs: CVE-2021-28876 CVE-2021-28879 CVE-2021-28875 CVE-2021-28877 CVE-2020-36323 CVE-2021-31162 Table of contents Symptom & Impact Environment & Reproduction Root Cause Analysis Quick Triage Step-by-Step Diagnosis Solution – Primary Fix Solution – […]

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FreeBSD 13 — py310-kerberos — vulnerability — patch and remediation guide — diagnosis and fix on FreeBSD 13

FreeBSD 13 — py310-kerberos — vulnerability — patch and remediation guide

🟢 Low   ⏱ 5–15 min  Last verified: 25 May 2026 Affected versions: FreeBSD 13 📖 ~4 min read  •  Source: FreeBSD VuXML VuXML topic: py-kerberos — DoS and MitM vulnerabilities Related CVEs: CVE-2015-3206 Upstream summary: macosforgebot reports: The checkPassword function in python-kerberos does not authenticate the KDC it attempts to communicate with, which allows […]

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