Binary Heaps and Priority Queues via JavaScript
Learn how to create one of the most common data structure for creating intelligent queues: binary heaps. We’ll use JavaScript to go over the concepts.
FreeBSD 12 — openarena — vulnerability — patch and remediation guide
🟢 Low ⏱ 5–15 min Last verified: 16 August 2019 Affected versions: FreeBSD 12 📖 ~4 min read • Source: FreeBSD VuXML VuXML topic: id Tech 3 — remote code execution vulnerability Related CVEs: CVE-2017-6903 Upstream summary: The content auto-download of id Tech 3 can be used to deliver maliciously crafted content, that triggers […]
Alpine Linux edge — libdwarf — multiple vulnerabilities (6 CVEs) — patch and remediation guide
🟠 High ⏱ 15–60 min Last verified: 25 May 2026 Affected versions: Alpine Linux edge / fixed in 0.9.2-r0 📖 ~4 min read • Source: Alpine secdb entry — libdwarf 0.9.2-r0 Related CVEs: DW202402-001 DW202402-002 DW202402-003 DW202403-001 CVE-2019-14249 CVE-2015-8538 Upstream summary: Alpine main repository for vedge ships libdwarf 0.9.2-r0 which addresses DW202402-001. Table of […]
How to Install MariaDB on RHEL 8
MariaDB is a community-developed, fully open-source relational database management system that was forked from MySQL and remains highly compatible with it. On RHEL 8, MariaDB is conveniently available through the AppStream module system, allowing you to install a specific stream version without adding third-party repositories. This tutorial covers installing MariaDB 10.5 via AppStream, starting and […]
FreeBSD 12 — ja-lynx-current — security advisory — patch and remediation guide
🟢 Low ⏱ 5–15 min Last verified: 16 August 2019 Affected versions: FreeBSD 12 📖 ~4 min read • Source: FreeBSD VuXML VuXML topic: lynx — SSL certificate validation error Upstream summary: Axel Beckert reports: […] I was able to capture the password given on the commandline in traffic of an TLS handshake using […]
How To Use Apache as a Reverse Proxy with mod_proxy on Ubuntu 16.04
In this tutorial, you will set up Apache as a reverse proxy using the `mod_proxy` extension to redirect incoming connections to underlying application server(s) running on the same network. There are instructions on setting up a simple web app using the Flask framework to show how Apache interacts with the real application hidden behind it, but you can also follow this tutorial using your existing application server, if you have one.
FreeBSD 12 — php55-exif — multiple vulnerabilities (13 CVEs) — patch and remediation guide
🟠 High ⏱ 15–60 min Last verified: 16 August 2019 Affected versions: FreeBSD 12 📖 ~4 min read • Source: FreeBSD VuXML VuXML topic: php — multiple vulnerabilities Related CVEs: CVE-2015-8879 CVE-2016-3074 CVE-2016-5385 CVE-2016-5399 CVE-2016-6288 CVE-2016-6289 CVE-2016-6290 CVE-2016-6291 +5 more Upstream summary: PHP reports: Fixed bug #69975 (PHP segfaults when accessing nvarchar(max) defined columns) […]
Arch Linux — zathura-pdf-mupdf — multiple vulnerabilities (10 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-201805-12 Related CVEs: CVE-2018-6544 CVE-2018-6192 CVE-2018-6187 CVE-2018-5686 CVE-2018-1000051 CVE-2017-17858 CVE-2017-15587 CVE-2017-14687 +2 more Upstream summary: Type: multiple issues. Status: Fixed. Affected: 0.3.3-2. Fixed in: 0.3.3-3. Group: AVG-691. Table of contents […]
How To Spin Up a Hadoop Cluster with cloud servers
This tutorial will cover setting up a Hadoop cluster on the cloud provider. The Hadoop software library is an Apache framework that lets you process large data sets in a distributed way across server clusters through leveraging basic programming models….
SLES 15 — python3-cupshelpers — vulnerability — patch and remediation guide
🟡 Medium ⏱ 10–30 min Last verified: 16 August 2019 Affected versions: SLES 15 📖 ~4 min read • Source: SUSE security advisory (see also SUSE bugzilla) Related CVEs: CVE-2011-4405 Upstream summary: The cupshelpers scripts in system-config-printer in Ubuntu 11.04 and 11.10, as used by the automatic printer driver download service, uses an "insecure […]