Linux

How to Install Composer on CentOS Stream 9 — step-by-step CentOS Stream 9 tutorial on Progressive Robot

How to Install Composer on CentOS Stream 9

Introduction CentOS Stream 9 ships with a stable, security-hardened base that makes deploying install composer on centos stream 9 both straightforward and auditable. This tutorial covers the complete procedure for how to Install Composer on CentOS Stream 9, including dnf module streams where applicable, systemd unit management, and the firewalld rules required for network-facing services. […]

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How to Set Up Victoriametrics on Debian 11 — step-by-step Debian 11 tutorial on Progressive Robot

How to Set Up Victoriametrics on Debian 11

Introduction This guide explains how to Set Up Victoriametrics on Debian 11 on Debian 11 Bullseye. Debian Bullseye uses systemd for service management, nftables as the underlying packet filter (with ufw or iptables front-ends still available), and AppArmor for mandatory access control. Every command is designed for a minimal Debian 11 install with the standard […]

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Debian 11 — recon-ng — vulnerability — patch and remediation guide — diagnosis and fix on Debian 11

Debian 11 — recon-ng — vulnerability — patch and remediation guide

🟢 Low   ⏱ 5–15 min  Last verified: 20 February 2022 Affected versions: Debian 11 (bullseye) 📖 ~4 min read  •  Source: Debian Security Tracker Related CVEs: CVE-2018-20752 Upstream summary: An issue was discovered in Recon-ng before 4.9.5. Lack of validation in the modules/reporting/csv.py file allows CSV injection. More specifically, when a Twitter user possesses […]

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

Debian 11 — swi-prolog — multiple vulnerabilities (3 CVEs) — patch and remediation guide

🟡 Medium   ⏱ 10–30 min  Last verified: 20 February 2022 Affected versions: Debian 11 (bullseye) 📖 ~4 min read  •  Source: Debian Security Tracker Related CVEs: CVE-2012-6089 CVE-2012-6090 CVE-2017-17524 Upstream summary: Multiple stack-based buffer overflows in the canoniseFileName function in os/pl-os.c in SWI-Prolog before 6.2.5 and 6.3.x before 6.3.7 allow remote attackers to cause […]

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openSUSE Tumbleweed — qtox — vulnerability — patch and remediation guide — diagnosis and fix on openSUSE Tumbleweed

openSUSE Tumbleweed — qtox — vulnerability — patch and remediation guide

🔴 Critical   ⏱ 15–90 min  Last verified: 25 May 2026 Affected versions: openSUSE Tumbleweed 📖 ~4 min read  •  Source: SUSE advisory openSUSE-SU-2021:1640-1 (see also SUSE bugzilla) Related CVEs: CVE-2021-44847 Upstream summary: A stack-based buffer overflow in handle_request function in DHT.c in toxcore 0.1.9 through 0.1.11 and 0.2.0 through 0.2.12 (caused by an improper […]

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Ubuntu 20.04 — xz-utils — vulnerability — patch and remediation guide — diagnosis and fix on Ubuntu 20.04

Ubuntu 20.04 — xz-utils — vulnerability — patch and remediation guide

🟢 Low   ⏱ 5–15 min  Last verified: 20 February 2022 Affected versions: Ubuntu 20.04 (focal) 📖 ~4 min read  •  Source: Ubuntu Security Notice USN-5378-2 Related CVEs: CVE-2022-1271 Upstream summary: Cleemy Desu Wayo discovered that XZ Utils incorrectly handled certain filenames. If a user or automated system were tricked into performing xzgrep operations with […]

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How To Install Nginx on Rocky Linux 8 — step-by-step Linux tutorial on Progressive Robot

How To Install Nginx on Rocky Linux 8

Nginx is one of the most popular web servers in the world and is responsible for hosting some of the largest and highest-traffic sites on the internet. It is more resource-friendly than Apache in most cases and can be used as a web server or reverse proxy. In this guide, we’ll discuss how to install Nginx on a Rocky Linux 8 server.

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Ubuntu 16.04 — libksba — multiple vulnerabilities (8 CVEs) — patch and remediation guide — diagnosis and fix on Ubuntu 16.04

Ubuntu 16.04 — libksba — multiple vulnerabilities (8 CVEs) — patch and remediation guide

🟡 Medium   ⏱ 10–30 min  Last verified: 20 February 2022 Affected versions: Ubuntu 16.04 (xenial) 📖 ~4 min read  •  Source: Ubuntu Security Notice USN-5787-2 Related CVEs: CVE-2022-47629 CVE-2022-3515 CVE-2016-4353 CVE-2016-4354 CVE-2016-4355 CVE-2016-4356 CVE-2016-4574 CVE-2016-4579 Upstream summary: USN-5787-1 fixed vulnerabilities in Libksba. This update provides the corresponding updates for Ubuntu 16.04 ESM and Ubuntu […]

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

Oracle Linux 8 — expat — vulnerability — patch and remediation guide (ELSA-2022-0951)

🟠 High   ⏱ 15–60 min  Last verified: 20 February 2022 Affected versions: Oracle Linux 8 📖 ~4 min read  •  Source: ELSA advisory ELSA-2022-0951 Related CVEs: CVE-2022-25235 CVE-2022-22825 CVE-2022-22823 CVE-2022-23852 CVE-2021-45960 CVE-2021-46143 Table of contents Symptom & Impact Environment & Reproduction Root Cause Analysis Quick Triage Step-by-Step Diagnosis Solution – Primary Fix Solution – […]

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Amazon Linux 2 — nss-util — multiple vulnerabilities (13 CVEs) — patch and remediation guide — diagnosis and fix on Amazon Linux 2

Amazon Linux 2 — nss-util — multiple vulnerabilities (13 CVEs) — patch and remediation guide

🔴 Critical   ⏱ 15–90 min  Last verified: 25 May 2026 Affected versions: Amazon Linux 2 📖 ~4 min read  •  Source: Amazon Linux advisory ALAS2-2021-1722 Related CVEs: CVE-2021-43527 CVE-2019-11729 CVE-2019-11745 CVE-2019-11719 CVE-2019-11727 CVE-2019-11756 CVE-2019-17006 CVE-2019-17023  +5 more Upstream summary: NSS (Network Security Services) up to and including 3.73 is vulnerable to a heap overflow […]

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