Package Management

How to Install CouchDB on FreeBSD 13 — step-by-step FreeBSD 13 tutorial on Progressive Robot

How to Install CouchDB on FreeBSD 13

Introduction This guide explains how to Install CouchDB on FreeBSD 13 on FreeBSD 13. FreeBSD uses the pkg(8) binary package manager, rc.conf(5) for service startup configuration, and pf(4) as its primary packet filter. There is no SELinux or AppArmor — instead, FreeBSD provides the MAC (Mandatory Access Control) framework and Capsicum for fine-grained privilege separation. […]

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Oracle Linux 8 — Oracle Linux 8 Doesn't Recognize SAS Controllers on Older Oracle Sun Hardware — diagnosis and fix on Oracle Linux 8

Oracle Linux 8 — Oracle Linux 8 Doesn’t Recognize SAS Controllers on Older Oracle Sun Hardware

🟠 High   ⏱ 5–30 min  Last verified: 5 December 2021 Affected versions: Oracle Linux 8 📖 ~4 min read  •  Source: Oracle Bug 29120478 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 […]

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

openSUSE Tumbleweed — usbredir — vulnerability — patch and remediation guide

🟢 Low   ⏱ 5–15 min  Last verified: 25 May 2026 Affected versions: openSUSE Tumbleweed 📖 ~4 min read  •  Source: SUSE security advisory (see also SUSE bugzilla) Related CVEs: CVE-2021-3700 Upstream summary: A use-after-free vulnerability was found in usbredir in versions prior to 0.11.0 in the usbredirparser_serialize() in usbredirparser/usbredirparser.c. This issue occurs when serializing […]

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Debian 11 — dar — vulnerability — patch and remediation guide — diagnosis and fix on Debian 11

Debian 11 — dar — vulnerability — patch and remediation guide

🟢 Low   ⏱ 5–15 min  Last verified: 5 December 2021 Affected versions: Debian 11 (bullseye) 📖 ~4 min read  •  Source: Debian Security Tracker Related CVEs: CVE-2007-3528 Upstream summary: The blowfish mode in DAR before 2.3.4 uses weak Blowfish-CBC cryptography by (1) discarding random bits by the blowfish::make_ivec function in libdar/crypto.cpp that results in […]

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Debian 11 — l2tpns — vulnerability — patch and remediation guide — diagnosis and fix on Debian 11

Debian 11 — l2tpns — vulnerability — patch and remediation guide

🟢 Low   ⏱ 5–15 min  Last verified: 5 December 2021 Affected versions: Debian 11 (bullseye) 📖 ~4 min read  •  Source: Debian Security Tracker Related CVEs: CVE-2006-5873 Upstream summary: Buffer overflow in the cluster_process_heartbeat function in cluster.c in layer 2 tunneling protocol network server (l2tpns) before 2.1.21 allows remote attackers to cause a denial […]

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Debian 11 — backbone — vulnerability — patch and remediation guide — diagnosis and fix on Debian 11

Debian 11 — backbone — vulnerability — patch and remediation guide

🟢 Low   ⏱ 5–15 min  Last verified: 5 December 2021 Affected versions: Debian 11 (bullseye) 📖 ~4 min read  •  Source: Debian Security Tracker Related CVEs: CVE-2016-10537 Upstream summary: backbone is a module that adds in structure to a JavaScript heavy application through key-value pairs and custom events connecting to your RESTful API through […]

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Ubuntu 20.04 — glances — vulnerability — patch and remediation guide — diagnosis and fix on Ubuntu 20.04

Ubuntu 20.04 — glances — vulnerability — patch and remediation guide

🟢 Low   ⏱ 5–15 min  Last verified: 5 December 2021 Affected versions: Ubuntu 20.04 (focal) 📖 ~4 min read  •  Source: Ubuntu Security Notice USN-5187-1 Related CVEs: CVE-2021-23418 Upstream summary: It was discovered that Glances incorrectly parsed untrusted XML data due to usage of xmlrpclib. An attacker could possibly use this to perform an […]

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

Ubuntu 18.04 — zsh — multiple vulnerabilities (5 CVEs) — patch and remediation guide

🟡 Medium   ⏱ 10–30 min  Last verified: 5 December 2021 Affected versions: Ubuntu 18.04 (bionic) 📖 ~4 min read  •  Source: Ubuntu Security Notice USN-5325-1 Related CVEs: CVE-2019-20044 CVE-2021-45444 CVE-2018-0502 CVE-2018-1100 CVE-2018-13259 Upstream summary: Sam Foxman discovered that Zsh incorrectly handled certain inputs. An attacker could possibly use this issue to regain dropped privileges. […]

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Amazon Linux 2 — mod_auth_mellon — multiple vulnerabilities (4 CVEs) — patch and remediation guide — diagnosis and fix on Amazon Linux 2

Amazon Linux 2 — mod_auth_mellon — multiple vulnerabilities (4 CVEs) — patch and remediation guide

🟠 High   ⏱ 15–60 min  Last verified: 25 May 2026 Affected versions: Amazon Linux 2 📖 ~4 min read  •  Source: Amazon Linux advisory ALAS2-2019-1200 Related CVEs: CVE-2019-3877 CVE-2019-3878 CVE-2021-3639 CVE-2019-13038 Upstream summary: A vulnerability was found in a previous version of mod_auth_mellon. An open redirect in the logout URL allows requests with backslashes […]

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How to Configure XFS File System on Debian 9 — step-by-step Debian 9 tutorial on Progressive Robot

How to Configure XFS File System on Debian 9

Introduction How to Configure XFS File System on Debian 9 is a fundamental operation for any administrator maintaining a Debian 9 Stretch server. Debian 9 Stretch 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 9. […]

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