Security Hardening

Ubuntu 16.04 — gosa — multiple vulnerabilities (3 CVEs) — patch and remediation guide — diagnosis and fix on Ubuntu 16.04

Ubuntu 16.04 — gosa — multiple vulnerabilities (3 CVEs) — patch and remediation guide

🟡 Medium   ⏱ 10–30 min  Last verified: 12 August 2019 Affected versions: Ubuntu 16.04 (xenial) 📖 ~4 min read  •  Source: Ubuntu Security Notice USN-4609-1 Related CVEs: CVE-2018-1000528 CVE-2019-11187 CVE-2019-14466 Upstream summary: Fabian Henneke discovered that GOsa incorrectly handled client cookies. An authenticated user could exploit this with a crafted cookie to perform file […]

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Gentoo Linux — mail-mta/netqmail — multiple vulnerabilities (3 CVEs) — patch and remediation guide — diagnosis and fix on Gentoo Linux

Gentoo Linux — mail-mta/netqmail — multiple vulnerabilities (3 CVEs) — patch and remediation guide

🟡 Medium   ⏱ 10–30 min  Last verified: 25 May 2026 Affected versions: Gentoo Linux 📖 ~4 min read  •  Source: Gentoo GLSA GLSA-202007-01 Related CVEs: CVE-2005-1513 CVE-2005-1514 CVE-2005-1515 Upstream summary: Multiple vulnerabilities have been discovered in netqmail. Please review the CVE identifiers referenced below for details. Table of contents Symptom & Impact Environment & […]

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Oracle Linux 8 — python-pip — vulnerability — patch and remediation guide — diagnosis and fix on Oracle Linux 8

Oracle Linux 8 — python-pip — vulnerability — patch and remediation guide (ELSA-2020-1916)

🟡 Medium   ⏱ 10–30 min  Last verified: 12 August 2019 Affected versions: Oracle Linux 8 📖 ~4 min read  •  Source: ELSA advisory ELSA-2020-1916 Related CVEs: CVE-2019-11324 CVE-2018-20060 CVE-2019-11236 CVE-2018-18074 Table of contents Symptom & Impact Environment & Reproduction Root Cause Analysis Quick Triage Step-by-Step Diagnosis Solution – Primary Fix Solution – Alternative Approaches […]

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Arch Linux — libytnef — vulnerability — patch and remediation guide — diagnosis and fix on Arch Linux

Arch Linux — libytnef — vulnerability — patch and remediation guide

🟠 High   ⏱ 15–60 min  Last verified: 25 May 2026 Affected versions: Arch Linux (rolling release) 📖 ~4 min read  •  Source: Arch ASA ASA-201708-10 Related CVEs: CVE-2017-9058 Upstream summary: Type: arbitrary code execution. Status: Fixed. Affected: 1.9.2-1. Fixed in: 1.9.2-2. Group: AVG-275. Table of contents Symptom & Impact Environment & Reproduction Root Cause […]

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How to Configure NTLM Authentication on Windows Server 2016 — step-by-step Windows Server 2016 tutorial on Progressive Robot

How to Configure NTLM Authentication on Windows Server 2016

How to Set Up Windows Server 2016 NTLM Authentication NTLM (NT LAN Manager) is a challenge-response authentication protocol that predates Kerberos in the Windows ecosystem. While Kerberos is the preferred authentication protocol in Windows Server 2016 Active Directory environments, NTLM is still used in several scenarios: when clients connect using IP addresses instead of DNS […]

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How to Set Up Puppet Agent on SLES 15 — step-by-step SUSE Linux Enterprise 15 tutorial on Progressive Robot

How to Set Up Puppet Agent on SLES 15

Introduction This tutorial covers How to Set Up Puppet Agent on SLES 15 on SLES 15. SLES 15 (SUSE Linux Enterprise Server 16) is SUSE’s enterprise-grade Linux distribution. It uses the zypper package manager, AppArmor for mandatory access control, and systemctl for service management. Prerequisites Ensure your SLES 15 system is up to date: zypper […]

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

FreeBSD 12 — atheme-services — multiple vulnerabilities (2 CVEs) — patch and remediation guide

🟢 Low   ⏱ 5–15 min  Last verified: 11 August 2019 Affected versions: FreeBSD 12 📖 ~4 min read  •  Source: FreeBSD VuXML VuXML topic: atheme-services — multiple vulnerabilities Related CVEs: CVE-2014-9773 CVE-2016-4478 Upstream summary: Mitre reports: modules/chanserv/flags.c in Atheme before 7.2.7 allows remote attackers to modify the Anope FLAGS behavior by registering and dropping […]

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FreeBSD 12 — php5-mysql — vulnerability — patch and remediation guide — diagnosis and fix on FreeBSD 12

FreeBSD 12 — php5-mysql — vulnerability — patch and remediation guide

🟢 Low   ⏱ 5–15 min  Last verified: 11 August 2019 Affected versions: FreeBSD 12 📖 ~4 min read  •  Source: FreeBSD VuXML VuXML topic: mysql — SSL Downgrade Related CVEs: CVE-2015-3152 Upstream summary: Duo Security reports: Researchers have identified a serious vulnerability in some versions of Oracle’s MySQL database product that allows an attacker […]

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How to Set Up ZFS Send and Receive on FreeBSD 12 — step-by-step FreeBSD 12 tutorial on Progressive Robot

How to Set Up ZFS Send and Receive on FreeBSD 12

Introduction How to Set Up ZFS Send and Receive on FreeBSD 12 is a core administration task for any FreeBSD 12 server operator. FreeBSD 12 ships with the 15.0-RELEASE kernel, ZFS as the default root filesystem, Capsicum capability sandboxing improvements, and an updated ports tree. Unlike Linux distributions, FreeBSD uses rc(8) for service management, pf […]

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Alpine Linux edge — aspell — multiple vulnerabilities (2 CVEs) — patch and remediation guide — diagnosis and fix on Alpine Linux edge

Alpine Linux edge — aspell — multiple vulnerabilities (2 CVEs) — patch and remediation guide

🟡 Medium   ⏱ 10–30 min  Last verified: 25 May 2026 Affected versions: Alpine Linux edge / fixed in 0.60.8-r1 📖 ~4 min read  •  Source: Alpine secdb entry — aspell 0.60.8-r1 Related CVEs: CVE-2019-25051 CVE-2019-17544 Upstream summary: Alpine main repository for vedge ships aspell 0.60.8-r1 which addresses CVE-2019-25051. Table of contents Symptom & Impact […]

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