Linux

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

Debian 11 — bubblewrap — multiple vulnerabilities (4 CVEs) — patch and remediation guide

🟡 Medium   ⏱ 10–30 min  Last verified: 6 November 2022 Affected versions: Debian 11 (bullseye) 📖 ~4 min read  •  Source: Debian Security Tracker Related CVEs: CVE-2016-8659 CVE-2017-5226 CVE-2019-12439 CVE-2020-5291 Upstream summary: Bubblewrap before 0.1.3 sets the PR_SET_DUMPABLE flag, which might allow local users to gain privileges by attaching to the process, as demonstrated […]

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Debian 11 — libhtml-scrubber-perl — vulnerability — patch and remediation guide — diagnosis and fix on Debian 11

Debian 11 — libhtml-scrubber-perl — vulnerability — patch and remediation guide

🟢 Low   ⏱ 5–15 min  Last verified: 6 November 2022 Affected versions: Debian 11 (bullseye) 📖 ~4 min read  •  Source: Debian Security Tracker Related CVEs: CVE-2015-5667 Upstream summary: Cross-site scripting (XSS) vulnerability in the HTML-Scrubber module before 0.15 for Perl, when the comment feature is enabled, allows remote attackers to inject arbitrary web […]

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Cómo instalar el servidor web Apache en CentOS 8 — step-by-step Linux tutorial on Progressive Robot

Cómo instalar el servidor web Apache en CentOS 8

El servidor HTTP Apache es el más usado del mundo. Ofrece muchas características potentes, entre las que se incluyen módulos que se cargan de forma dinámica, una sólida compatibilidad con medios y amplia integración con otras herramientas de software…

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

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

🟠 High   ⏱ 15–60 min  Last verified: 6 November 2022 Affected versions: Debian 11 (bullseye) 📖 ~4 min read  •  Source: Debian Security Tracker Related CVEs: CVE-2012-2942 CVE-2013-1912 CVE-2013-2175 CVE-2014-6269 CVE-2015-3281 CVE-2016-5360 CVE-2018-10184 CVE-2018-11469  +12 more Upstream summary: Buffer overflow in the trash buffer in the header capture functionality in HAProxy before 1.4.21, when […]

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Ubuntu 22.04 — booth — vulnerability — patch and remediation guide — diagnosis and fix on Ubuntu 22.04

Ubuntu 22.04 — booth — vulnerability — patch and remediation guide

🟢 Low   ⏱ 5–15 min  Last verified: 6 November 2022 Affected versions: Ubuntu 22.04 (jammy) 📖 ~4 min read  •  Source: Ubuntu Security Notice USN-5556-1 Related CVEs: CVE-2022-2553 Upstream summary: It was discovered that Booth incorrectly handled user authentication. An attacker could use this vulnerability to cause a denial of service. Table of contents […]

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How To Install asdf to Manage Multiple Programming Language Runtime Versions on Ubuntu 22.04 — step-by-step Linux tutorial on Progressive Robot

How To Install asdf to Manage Multiple Programming Language Runtime Versions on Ubuntu 22.04

asdf is a command line interface tool, or CLI tool, for managing different runtime versions across multiple programming languages. It unifies all the runtimes under one configuration file, and uses a plugin structure to manage everything with one tool. As an example, you can install Node.js, but then have asdf as a central repository of plugins with each plugin being maintained either officially or by community contributors.

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Oracle Linux 9 — libXpm — vulnerability — patch and remediation guide — diagnosis and fix on Oracle Linux 9

Oracle Linux 9 — libXpm — vulnerability — patch and remediation guide (ELSA-2023-0383)

🟠 High   ⏱ 15–60 min  Last verified: 6 November 2022 Affected versions: Oracle Linux 9 📖 ~4 min read  •  Source: ELSA advisory ELSA-2023-0383 Related CVEs: CVE-2022-4883 CVE-2022-44617 CVE-2022-46285 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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Debian 11 — request-tracker4 — multiple vulnerabilities (20 CVEs) — patch and remediation guide — diagnosis and fix on Debian 11

Debian 11 — request-tracker4 — multiple vulnerabilities (20 CVEs) — patch and remediation guide

🟠 High   ⏱ 15–60 min  Last verified: 6 November 2022 Affected versions: Debian 11 (bullseye) 📖 ~4 min read  •  Source: Debian Security Tracker Related CVEs: CVE-2011-2082 CVE-2011-2083 CVE-2011-2084 CVE-2011-2085 CVE-2011-4458 CVE-2011-4459 CVE-2011-4460 CVE-2012-2768  +12 more Upstream summary: The vulnerable-passwords script in Best Practical Solutions RT 3.x before 3.8.12 and 4.x before 4.0.6 does […]

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How to Automate Backups with rsync and cron on RHEL 9 — step-by-step RHEL 9 tutorial on Progressive Robot

How to Automate Backups with rsync and cron on RHEL 9

rsync is a fast and versatile file synchronization tool that transfers only changed bytes, making it extremely efficient for incremental backups. Combined with cron or a systemd timer, it forms the basis of a reliable automated backup system on RHEL 9 without requiring additional backup software. The –link-dest option enables space-efficient dated snapshots that appear […]

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Common Problems 117023

Ubuntu 22.04 LTS – disk fills from oversized journald logs – Fix & Prevention

🟡 Medium   ⏱ 5–30 min  Last verified: 5 November 2022 Affected versions: Ubuntu 22.04 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 […]

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