Package Management

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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Common Problems 120994

Debian 10 – dist-upgrade aborts with held broken packages

🟠 High   ⏱ 5–30 min  Last verified: 27 March 2020 Affected versions: Debian 10 📖 ~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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