Linux

Debian 11 — libnet-server-perl — multiple vulnerabilities (2 CVEs) — patch and remediation guide — diagnosis and fix on Debian 11

Debian 11 — libnet-server-perl — multiple vulnerabilities (2 CVEs) — patch and remediation guide

🟢 Low   ⏱ 5–15 min  Last verified: 25 September 2022 Affected versions: Debian 11 (bullseye) 📖 ~4 min read  •  Source: Debian Security Tracker Related CVEs: CVE-2005-1127 CVE-2013-1841 Upstream summary: Format string vulnerability in the log function in Net::Server 0.87 and earlier, as used in Postfix Greylisting Policy Server (Postgrey) 1.18 and earlier, and […]

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Debian 11 — distcc — multiple vulnerabilities (2 CVEs) — patch and remediation guide — diagnosis and fix on Debian 11

Debian 11 — distcc — multiple vulnerabilities (2 CVEs) — patch and remediation guide

🟢 Low   ⏱ 5–15 min  Last verified: 25 September 2022 Affected versions: Debian 11 (bullseye) 📖 ~4 min read  •  Source: Debian Security Tracker Related CVEs: CVE-2004-0601 CVE-2004-2687 Upstream summary: distcc before 2.16, when running on 64-bit platforms, does not interpret IP-based access control rules correctly, which could allow remote attackers to bypass intended […]

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Debian 11 — rpki-client — multiple vulnerabilities (3 CVEs) — patch and remediation guide — diagnosis and fix on Debian 11

Debian 11 — rpki-client — multiple vulnerabilities (3 CVEs) — patch and remediation guide

🟡 Medium   ⏱ 10–30 min  Last verified: 25 September 2022 Affected versions: Debian 11 (bullseye) 📖 ~4 min read  •  Source: Debian Security Tracker Related CVEs: CVE-2021-3909 CVE-2021-43172 CVE-2021-43173 Upstream summary: OctoRPKI does not limit the length of a connection, allowing for a slowloris DOS attack to take place which makes OctoRPKI wait forever. […]

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How To Secure Nginx with Let's Encrypt on Debian 11 — step-by-step Linux tutorial on Progressive Robot

How To Secure Nginx with Let’s Encrypt on Debian 11

Let’s Encrypt is a Certificate Authority (CA) that provides an accessible way to obtain and install free TLS/SSL certificates, thereby enabling encrypted HTTPS on web servers. It simplifies the process by providing a software client, Certbot, that attempts to automate most (if not all) of the required steps. In this tutorial, you will use Certbot to obtain a free SSL certificate for Nginx on Ubuntu 22.04, and set up your certificate to renew automatically.

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Ubuntu 22.04 — php-dompdf — multiple vulnerabilities (2 CVEs) — patch and remediation guide — diagnosis and fix on Ubuntu 22.04

Ubuntu 22.04 — php-dompdf — multiple vulnerabilities (2 CVEs) — patch and remediation guide

🟢 Low   ⏱ 5–15 min  Last verified: 25 September 2022 Affected versions: Ubuntu 22.04 (jammy) 📖 ~4 min read  •  Source: Ubuntu Security Notice USN-6277-2 Related CVEs: CVE-2021-3838 CVE-2022-2400 Upstream summary: USN-6277-1 fixed vulnerabilities in Dompdf. This update provides the corresponding updates for Ubuntu 22.04 LTS. Original advisory details: It was discovered that Dompdf […]

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How to Install Julia Programming Language on Ubuntu 22.04 — step-by-step Linux tutorial on Progressive Robot

How to Install Julia Programming Language on Ubuntu 22.04

Julia is a programming language designed to be high performance in computation and analysis. It is popular in data science, scientific research, visualization, machine learning, and also for more general purpose application building. The official site provides a [live demo](https://julialang.org/learning/tryjulia/) for you to try out the Julia language, but for practical use and development you will need to install it onto your system.

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Ubuntu 18.04 — graphite-web — multiple vulnerabilities (5 CVEs) — patch and remediation guide — diagnosis and fix on Ubuntu 18.04

Ubuntu 18.04 — graphite-web — multiple vulnerabilities (5 CVEs) — patch and remediation guide

🟡 Medium   ⏱ 10–30 min  Last verified: 25 September 2022 Affected versions: Ubuntu 18.04 (bionic) 📖 ~4 min read  •  Source: Ubuntu Security Notice USN-6243-2 Related CVEs: https://launchpad.net/bugs/2030807 CVE-2017-18638 CVE-2022-4728 CVE-2022-4729 CVE-2022-4730 Upstream summary: USN-6243-1 fixed vulnerabilities in Graphite-Web. It was discovered that the applied fix was incomplete. This update fixes the problem. Original […]

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How To Install and Use Composer on Ubuntu 16.04 — step-by-step Linux tutorial on Progressive Robot

How To Install and Use Composer on Ubuntu 16.04

Composer is a popular dependency management tool for PHP, created to facilitate installation and updates for project dependencies. It will check which other packages a specific project depends on and install them for you, using the appropriate versions according to the project requirements.

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How to Configure rkhunter Rootkit Scanner on Debian 11 — step-by-step Debian 11 tutorial on Progressive Robot

How to Configure rkhunter Rootkit Scanner on Debian 11

Introduction How to Configure rkhunter Rootkit Scanner on Debian 11 is a fundamental operation for any administrator maintaining a Debian 11 Bullseye server. Debian 11 Bullseye ships with the Linux 6.12 kernel, updated toolchains, and a fully refreshed package archive — meaning version numbers, configuration file paths, and some dependency chains differ from Debian 11. […]

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