Linux

CentOS Stream 9 — python-mako — vulnerability — patch and remediation guide — diagnosis and fix on CentOS Stream 9

CentOS Stream 9 — python-mako — vulnerability — patch and remediation guide

🟡 Medium   ⏱ 10–30 min  Last verified: 6 January 2023 Affected versions: CentOS Stream 9 📖 ~4 min read  •  Source: AlmaLinux/RHEL advisory ALSA-2023:2258 Related CVEs: CVE-2022-40023 Upstream summary: Mako is a template library written in Python. It provides a familiar, non-XML syntax which compiles into Python modules for maximum performance. Security Fix(es): * […]

Read more
How To Install Elasticsearch, Logstash, and Kibana (Elastic Stack) on Ubuntu 22.04 — step-by-step Linux tutorial on Progressive Robot

How To Install Elasticsearch, Logstash, and Kibana (Elastic Stack) on Ubuntu 22.04

In this tutorial, we will go over the installation of the Elastic Stack on an Ubuntu 22.04 server. You will learn how to install all of the components of the Elastic Stack (including Filebeat, a Beat used for forwarding and centralizing logs and files) and configure them to gather and visualize system logs. We will install all components on a single server, which we will refer to as our Elastic Stack Server.

Read more
Oracle Linux 8 — GraalVM — vulnerability — patch and remediation guide — diagnosis and fix on Oracle Linux 8

Oracle Linux 8 — GraalVM — vulnerability — patch and remediation guide (ELSA-2022-9655)

🟠 High   ⏱ 15–60 min  Last verified: 6 January 2023 Affected versions: Oracle Linux 8 📖 ~4 min read  •  Source: ELSA advisory ELSA-2022-9655 Related CVEs: CVE-2022-25647 CVE-2022-21549 CVE-2022-21541 CVE-2022-34169 CVE-2022-21540 Table of contents Symptom & Impact Environment & Reproduction Root Cause Analysis Quick Triage Step-by-Step Diagnosis Solution – Primary Fix Solution – Alternative […]

Read more
Установка и настройка Ansible в Ubuntu 18.04 [Краткое руководство] — step-by-step Linux tutorial on Progressive Robot

Установка и настройка Ansible в Ubuntu 18.04 [Краткое руководство]

В этом руководстве мы расскажем, как устанавливать и настраивать Ansible на сервере Ubuntu 18.04. Более детальный вариант настоящего руководства с подробным разъяснениями каждого шага можно найти в статье [«Установка и настройка Ansible в Ubuntu…

Read more
Common Problems 118491

Ubuntu 16.04 LTS – apt update shows Temporary failure resolving archive.ubuntu.com – Fix & Prevention

🟠 High   ⏱ 5–30 min  Last verified: 5 January 2023 Affected versions: Ubuntu 16.04 LTS 📖 ~1 min read 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 Prevention & Hardening Related Errors […]

Read more
Common Problems 116902

Ubuntu 22.04 apt lock errors during updates

🟡 Medium   ⏱ 5–30 min  Last verified: 5 January 2023 📖 ~1 min read 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 Prevention & Hardening Related Errors & Cross-Refs References & Further […]

Read more
Debian 11 — python-pysaml2 — multiple vulnerabilities (7 CVEs) — patch and remediation guide — diagnosis and fix on Debian 11

Debian 11 — python-pysaml2 — multiple vulnerabilities (7 CVEs) — patch and remediation guide

🟡 Medium   ⏱ 10–30 min  Last verified: 5 January 2023 Affected versions: Debian 11 (bullseye) 📖 ~4 min read  •  Source: Debian Security Tracker Related CVEs: CVE-2016-10127 CVE-2016-10149 CVE-2017-1000246 CVE-2017-1000433 CVE-2020-5390 CVE-2021-21238 CVE-2021-21239 Upstream summary: PySAML2 allows remote attackers to conduct XML external entity (XXE) attacks via a crafted SAML XML request or response. […]

Read more
Debian 11 — speech-dispatcher — vulnerability — patch and remediation guide — diagnosis and fix on Debian 11

Debian 11 — speech-dispatcher — vulnerability — patch and remediation guide

🟢 Low   ⏱ 5–15 min  Last verified: 5 January 2023 Affected versions: Debian 11 (bullseye) 📖 ~4 min read  •  Source: Debian Security Tracker Related CVEs: CVE-2014-1724 Upstream summary: Use-after-free vulnerability in Free(b)soft Laboratory Speech Dispatcher 0.7.1, as used in Google Chrome before 34.0.1847.116, allows remote attackers to cause a denial of service (application […]

Read more
AlmaLinux 8 — uom-parent — multiple vulnerabilities (4 CVEs) — patch and remediation guide — diagnosis and fix on AlmaLinux 8

AlmaLinux 8 — uom-parent — multiple vulnerabilities (4 CVEs) — patch and remediation guide

🟠 High   ⏱ 15–60 min  Last verified: 25 May 2026 Affected versions: AlmaLinux 8 📖 ~4 min read  •  Source: AlmaLinux ALSA ALSA-2022:0290 Related CVEs: CVE-2021-4104 CVE-2022-23302 CVE-2022-23305 CVE-2022-23307 Upstream summary: Parfait is a Java performance monitoring library that collects metrics and exposes them through a variety of outputs. It provides APIs for extracting […]

Read more
Debian 11 — klibc — multiple vulnerabilities (5 CVEs) — patch and remediation guide — diagnosis and fix on Debian 11

Debian 11 — klibc — multiple vulnerabilities (5 CVEs) — patch and remediation guide

🟡 Medium   ⏱ 10–30 min  Last verified: 5 January 2023 Affected versions: Debian 11 (bullseye) 📖 ~4 min read  •  Source: Debian Security Tracker Related CVEs: CVE-2011-1930 CVE-2021-31870 CVE-2021-31871 CVE-2021-31872 CVE-2021-31873 Upstream summary: In klibc 1.5.20 and 1.5.21, the DHCP options written by ipconfig to /tmp/net-$DEVICE.conf are not properly escaped. This may allow a […]

Read more
CHAT