Operations

How to Detect Rootkits with rkhunter on FreeBSD 12 — step-by-step FreeBSD 12 tutorial on Progressive Robot

How to Detect Rootkits with rkhunter on FreeBSD 12

Introduction This guide explains how to Detect Rootkits with rkhunter on FreeBSD 12 on FreeBSD 12. 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 […]

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Common Problems 115411

RHEL 7 Host Not Registered to Subscription Channels

🟡 Medium   ⏱ 5–30 min  Last verified: 17 February 2020 📖 ~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 […]

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FreeBSD 12 — torcs — multiple vulnerabilities (2 CVEs) — patch and remediation guide — diagnosis and fix on FreeBSD 12

FreeBSD 12 — torcs — multiple vulnerabilities (2 CVEs) — patch and remediation guide

🟢 Low   ⏱ 5–15 min  Last verified: 17 February 2020 Affected versions: FreeBSD 12 📖 ~4 min read  •  Source: FreeBSD VuXML VuXML topic: plib — remote code execution via buffer overflow Related CVEs: CVE-2010-3384 CVE-2011-4620 Upstream summary: Secunia reports: A vulnerability has been discovered in PLIB, which can be exploited by malicious people […]

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FreeBSD 12 — ja-xlockmore — vulnerability — patch and remediation guide — diagnosis and fix on FreeBSD 12

FreeBSD 12 — ja-xlockmore — vulnerability — patch and remediation guide

🟢 Low   ⏱ 5–15 min  Last verified: 17 February 2020 Affected versions: FreeBSD 12 📖 ~4 min read  •  Source: FreeBSD VuXML VuXML topic: xlockmore — local exploit Related CVEs: CVE-2012-4524 Upstream summary: Ignatios Souvatzis of NetBSD reports: Due to an error in the dclock screensaver in xlockmore, users who explicitly use this screensaver […]

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Common Problems 112576

Windows Server 2019 – Cluster network driver instability causes heartbeat loss – Fix and Prevention

🟠 High   ⏱ 5–30 min  Last verified: 17 February 2020 Affected versions: Windows Server 2019 📖 ~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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openSUSE Tumbleweed — libxapian30 — vulnerability — patch and remediation guide — diagnosis and fix on openSUSE Tumbleweed

openSUSE Tumbleweed — libxapian30 — vulnerability — patch and remediation guide

🟠 High   ⏱ 15–60 min  Last verified: 25 May 2026 Affected versions: openSUSE Tumbleweed 📖 ~4 min read  •  Source: SUSE security advisory (see also SUSE bugzilla) Related CVEs: CVE-2018-0499 Upstream summary: A cross-site scripting vulnerability in queryparser/termgenerator_internal.cc in Xapian xapian-core before 1.4.6 exists due to incomplete HTML escaping by Xapian::MSet::snippet(). Table of contents […]

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How to Set Up HAProxy Load Balancer on Debian 9 — step-by-step Debian 9 tutorial on Progressive Robot

How to Set Up HAProxy Load Balancer on Debian 9

Introduction How to Set Up HAProxy Load Balancer 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 […]

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FreeBSD 12 — yamt — multiple vulnerabilities (3 CVEs) — patch and remediation guide — diagnosis and fix on FreeBSD 12

FreeBSD 12 — yamt — multiple vulnerabilities (3 CVEs) — patch and remediation guide

🟡 Medium   ⏱ 10–30 min  Last verified: 17 February 2020 Affected versions: FreeBSD 12 📖 ~4 min read  •  Source: FreeBSD VuXML VuXML topic: yamt — buffer overflow and directory traversal issues Related CVEs: CVE-2004-1302 CVE-2005-1846 CVE-2005-1847 Upstream summary: Stanislav Brabec discovered errors in yamt's path name handling that lead to buffer overflows and […]

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FreeBSD 12 — apache13-modperl — vulnerability — patch and remediation guide — diagnosis and fix on FreeBSD 12

FreeBSD 12 — apache13-modperl — vulnerability — patch and remediation guide

🟢 Low   ⏱ 5–15 min  Last verified: 17 February 2020 Affected versions: FreeBSD 12 📖 ~4 min read  •  Source: FreeBSD VuXML VuXML topic: apache — heap overflow in mod_proxy Related CVEs: CVE-2004-0492 Upstream summary: A buffer overflow exists in mod_proxy which may allow an attacker to launch local DoS attacks and possibly execute […]

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How to Set the Hostname and FQDN on Debian 10 — step-by-step Debian 10 tutorial on Progressive Robot

How to Set the Hostname and FQDN on Debian 10

Introduction Deploying set the hostname and fqdn on debian 10 on a Debian 10 Buster machine is straightforward thanks to Debian’s policy-compliant packaging. Unlike rpm-based distributions, Debian stores configuration helpers in /etc/default/, uses update-rc.d for older init scripts, and provides dpkg-reconfigure for interactive package configuration. This tutorial stays on the systemd path throughout. Prerequisites Ensure […]

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