Security Hardening

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

How to Install Docker Engine on FreeBSD 13

Introduction Deploying install docker engine on freebsd 13 on a FreeBSD 13 machine differs from Linux in several important ways: packages come from the FreeBSD Ports Collection or the binary pkg repository, services are registered in /etc/rc.conf via sysrc(8), and firewall rules are written in pf.conf(5) syntax. This tutorial stays entirely within the standard base […]

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Oracle Linux 8 — .NET Core security and bugfix update — diagnosis and fix on Oracle Linux 8

Oracle Linux 8 — .NET Core security and bugfix update

🔴 Critical   ⏱ 15–90 min  Last verified: 3 December 2021 Affected versions: Oracle Linux 8 📖 ~4 min read  •  Source: ELSA advisory ELSA-2020-2938 Related CVEs: CVE-2020-1147 Table of contents Symptom & Impact Environment & Reproduction Root Cause Analysis Quick Triage Step-by-Step Diagnosis Solution – Primary Fix Solution – Alternative Approaches Verification & Acceptance […]

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

Debian 11 — pywps — vulnerability — patch and remediation guide

🟢 Low   ⏱ 5–15 min  Last verified: 3 December 2021 Affected versions: Debian 11 (bullseye) 📖 ~4 min read  •  Source: Debian Security Tracker Related CVEs: CVE-2021-39371 Upstream summary: An XML external entity (XXE) injection in PyWPS before 4.4.5 allows an attacker to view files on the application server filesystem by assigning a path […]

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Debian 11 — pg-partman — vulnerability — patch and remediation guide — diagnosis and fix on Debian 11

Debian 11 — pg-partman — vulnerability — patch and remediation guide

🟢 Low   ⏱ 5–15 min  Last verified: 3 December 2021 Affected versions: Debian 11 (bullseye) 📖 ~4 min read  •  Source: Debian Security Tracker Related CVEs: CVE-2021-33204 Upstream summary: In the pg_partman (aka PG Partition Manager) extension before 4.5.1 for PostgreSQL, arbitrary code execution can be achieved via SECURITY DEFINER functions because an explicit […]

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

Debian 11 — flamethrower — vulnerability — patch and remediation guide

🟢 Low   ⏱ 5–15 min  Last verified: 3 December 2021 Affected versions: Debian 11 (bullseye) 📖 ~4 min read  •  Source: Debian Security Tracker Related CVEs: CVE-2008-5141 Upstream summary: flamethrower in flamethrower 0.1.8 allows local users to overwrite arbitrary files via a symlink attack on a /tmp/multicast.tar.##### temporary file. Table of contents Symptom & […]

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Arch Linux — isync — multiple vulnerabilities (4 CVEs) — patch and remediation guide — diagnosis and fix on Arch Linux

Arch Linux — isync — multiple vulnerabilities (4 CVEs) — 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-202102-38 Related CVEs: CVE-2021-20247 CVE-2021-44143 CVE-2021-3657 CVE-2021-3578 Upstream summary: Type: directory traversal. Status: Fixed. Affected: 1.3.3-1. Fixed in: 1.3.5-1. Group: AVG-1598. Table of contents Symptom & Impact Environment & Reproduction […]

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FreeBSD 13 — py35-django-devel — multiple vulnerabilities (3 CVEs) — patch and remediation guide — diagnosis and fix on FreeBSD 13

FreeBSD 13 — py35-django-devel — multiple vulnerabilities (3 CVEs) — patch and remediation guide

🟡 Medium   ⏱ 10–30 min  Last verified: 3 December 2021 Affected versions: FreeBSD 13 📖 ~4 min read  •  Source: FreeBSD VuXML VuXML topic: django — multiple vulnerabilities Related CVEs: CVE-2016-2048 CVE-2016-2512 CVE-2016-2513 Upstream summary: Tim Graham reports: Malicious redirect and possible XSS attack via user-supplied redirect URLs containing basic auth User enumeration through […]

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

Debian 11 — postgrey — vulnerability — patch and remediation guide

🟢 Low   ⏱ 5–15 min  Last verified: 3 December 2021 Affected versions: Debian 11 (bullseye) 📖 ~4 min read  •  Source: Debian Security Tracker Related CVEs: CVE-2005-1127 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 possibly […]

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How to Configure PowerShell Remoting on Windows Server 2012 R2 — step-by-step Windows Server 2012 R2 tutorial on Progressive Robot

How to Configure PowerShell Remoting on Windows Server 2012 R2

How to Configure PowerShell Remoting on Windows Server 2012 R2 PowerShell Remoting is one of the most powerful features available to systems administrators managing Windows Server 2012 R2 environments. It allows you to run PowerShell commands and scripts on remote computers as if you were sitting at the console, enabling centralized management of dozens or […]

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Debian 11 — icecast2 — multiple vulnerabilities (9 CVEs) — patch and remediation guide — diagnosis and fix on Debian 11

Debian 11 — icecast2 — multiple vulnerabilities (9 CVEs) — patch and remediation guide

🟡 Medium   ⏱ 10–30 min  Last verified: 3 December 2021 Affected versions: Debian 11 (bullseye) 📖 ~4 min read  •  Source: Debian Security Tracker Related CVEs: CVE-2004-1561 CVE-2004-2027 CVE-2005-0837 CVE-2005-0838 CVE-2011-4612 CVE-2014-9018 CVE-2014-9091 CVE-2015-3026  +1 more Upstream summary: Buffer overflow in Icecast 2.0.1 and earlier allows remote attackers to execute arbitrary code via an […]

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