Troubleshooting

How to Install Cockpit Web Console on Debian 10 — step-by-step Debian 10 tutorial on Progressive Robot

How to Install Cockpit Web Console on Debian 10

Introduction This guide explains how to Install Cockpit Web Console on Debian 10 on Debian 10 Buster. Debian Buster 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 10 install with the […]

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Amazon Linux 2 — mysql-connector-java — vulnerability — patch and remediation guide — diagnosis and fix on Amazon Linux 2

Amazon Linux 2 — mysql-connector-java — vulnerability — patch and remediation guide

🟡 Medium   ⏱ 10–30 min  Last verified: 25 May 2026 Affected versions: Amazon Linux 2 📖 ~4 min read  •  Source: Amazon Linux advisory ALAS2-2023-2017 Related CVEs: CVE-2020-2934 Upstream summary: Vulnerability in the MySQL Connectors product of Oracle MySQL (component: Connector/J). Supported versions that are affected are 8.0.19 and prior and 5.1.48 and prior. […]

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Arch Linux — ruby-rdoc — multiple vulnerabilities (2 CVEs) — patch and remediation guide — diagnosis and fix on Arch Linux

Arch Linux — ruby-rdoc — multiple vulnerabilities (2 CVEs) — patch and remediation guide

🟡 Medium   ⏱ 10–30 min  Last verified: 25 May 2026 Affected versions: Arch Linux (rolling release) 📖 ~4 min read  •  Source: Arch ASA ASA-201910-4 Related CVEs: CVE-2015-9251 CVE-2012-6708 Upstream summary: Type: cross-site scripting. Status: Fixed. Affected: 6.1.1-1. Fixed in: 6.1.2-1. Group: AVG-1041. Table of contents Symptom & Impact Environment & Reproduction Root Cause […]

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FreeBSD 12 — nsd — multiple vulnerabilities (9 CVEs) — patch and remediation guide — diagnosis and fix on FreeBSD 12

FreeBSD 12 — nsd — multiple vulnerabilities (9 CVEs) — patch and remediation guide

🟡 Medium   ⏱ 10–30 min  Last verified: 28 March 2020 Affected versions: FreeBSD 12 📖 ~4 min read  •  Source: FreeBSD VuXML VuXML topic: Unbound/NSD — Denial of service vulnerability Related CVEs: CVE-2009-1755 CVE-2012-2978 CVE-2012-2979 CVE-2016-6170 CVE-2016-6171 CVE-2016-6172 CVE-2016-6173 CVE-2019-13207  +1 more Upstream summary: NLNetLabs reports: Unbound and NSD when writing the PID file […]

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FreeBSD 12 — py33-salt — multiple vulnerabilities (10 CVEs) — patch and remediation guide — diagnosis and fix on FreeBSD 12

FreeBSD 12 — py33-salt — multiple vulnerabilities (10 CVEs) — patch and remediation guide

🟠 High   ⏱ 15–60 min  Last verified: 28 March 2020 Affected versions: FreeBSD 12 📖 ~4 min read  •  Source: FreeBSD VuXML VuXML topic: salt — multiple vulnerabilities in salt-master process Related CVEs: CVE-2016-1866 CVE-2016-3176 CVE-2017-12791 CVE-2017-14695 CVE-2017-14696 CVE-2018-15750 CVE-2018-15751 CVE-2019-17361  +2 more Upstream summary: F-Secure reports: CVE-2020-11651 – Authentication bypass vulnerabilities The ClearFuncs […]

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FreeBSD 12 — py33-pillow — multiple vulnerabilities (4 CVEs) — patch and remediation guide — diagnosis and fix on FreeBSD 12

FreeBSD 12 — py33-pillow — multiple vulnerabilities (4 CVEs) — patch and remediation guide

🟡 Medium   ⏱ 10–30 min  Last verified: 28 March 2020 Affected versions: FreeBSD 12 📖 ~4 min read  •  Source: FreeBSD VuXML VuXML topic: Pillow — multiple vulnerabilities Related CVEs: CVE-2016-0740 CVE-2016-0775 CVE-2016-9189 CVE-2016-9190 Upstream summary: Pillow reports: Pillow prior to 3.3.2 may experience integer overflow errors in map.c when reading specially crafted image […]

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

Arch Linux — zeromq — 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-202009-16 Related CVEs: CVE-2020-15166 Upstream summary: Type: denial of service. Status: Fixed. Affected: 4.3.2-3. Fixed in: 4.3.3-1. Group: AVG-1219. Table of contents Symptom & Impact Environment & Reproduction Root Cause […]

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How to Configure Docker Networking on RHEL 7 — step-by-step RHEL 7 tutorial on Progressive Robot

How to Configure Docker Networking on RHEL 7

How to Configure Docker Networking on RHEL 7 Docker provides a powerful networking model that allows containers to communicate with each other, with the host, and with the outside world in a secure and configurable way. Out of the box, Docker creates a default bridge network and manages its own iptables rules to control traffic […]

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How to Install and Configure ISC DHCP Server on Debian 9 — step-by-step Debian 9 tutorial on Progressive Robot

How to Install and Configure ISC DHCP Server on Debian 9

Introduction Deploying install and configure isc dhcp server on debian 9 on a Debian 9 Stretch 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 […]

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Alpine Linux edge — postgresql-common — vulnerability — patch and remediation guide — diagnosis and fix on Alpine Linux edge

Alpine Linux edge — postgresql-common — vulnerability — patch and remediation guide

🟡 Medium   ⏱ 10–30 min  Last verified: 25 May 2026 Affected versions: Alpine Linux edge / fixed in 0 📖 ~4 min read  •  Source: Alpine secdb entry — postgresql-common 0 Related CVEs: CVE-2019-3466 Upstream summary: Alpine main repository for vedge ships postgresql-common 0 which addresses CVE-2019-3466. Table of contents Symptom & Impact Environment […]

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