How to Check if a Java Array Contains a Value?
Learn 4 proven methods to check if Java array contains value: for-loops, Streams, Arrays.asList(), and binarySearch(). Choose the right approach today!
FreeBSD 13 — openafs — multiple vulnerabilities (8 CVEs) — patch and remediation guide
🟡 Medium ⏱ 10–30 min Last verified: 25 May 2026 Affected versions: FreeBSD 13 📖 ~4 min read • Source: FreeBSD VuXML VuXML topic: openafs — multiple vulnerabilities Related CVEs: CVE-2013-1794 CVE-2013-4134 CVE-2014-0159 CVE-2015-7762 CVE-2015-7763 CVE-2015-8312 CVE-2016-2860 CVE-2016-4536 Upstream summary: The OpenAFS development team reports: Foreign users can bypass access controls to create groups […]
Ubuntu 20.04 — gdm3 — vulnerability — patch and remediation guide
🟢 Low ⏱ 5–15 min Last verified: 25 May 2026 Affected versions: Ubuntu 20.04 (focal) 📖 ~4 min read • Source: Ubuntu Security Notice USN-4614-1 Related CVEs: CVE-2020-16125 Upstream summary: Kevin Backhouse discovered that GDM incorrectly launched the initial setup tool when the accountsservice daemon was not reachable. A local attacker able to cause […]
Como configurar a plataforma IDE na nuvem do Eclipse Theia no Ubuntu 18.04
O autor selecionou o Free and Open Source Fund para receber uma doação como parte do programa Write for DOnations. Com as ferramentas de desenvolvimento para a nuvem, a adoção de plataformas IDE…
How to Configure Gitea Self-Hosted Git Service on Debian 9
Introduction Debian 9 Stretch is built around the ethos of stability and free software. Setting up configure gitea self-hosted git service on debian 9 on Stretch leverages the same proven Debian packaging system that powers millions of servers worldwide, while benefiting from the latest upstream releases included in the Stretch freeze. Follow each step carefully […]
Ubuntu 16.04 — dom4j — multiple vulnerabilities (2 CVEs) — patch and remediation guide
🟢 Low ⏱ 5–15 min Last verified: 25 May 2026 Affected versions: Ubuntu 16.04 (xenial) 📖 ~4 min read • Source: Ubuntu Security Notice USN-4619-1 Related CVEs: CVE-2018-1000632 CVE-2020-10683 Upstream summary: Mário Areias discovered that dom4j did not properly validate XML document elements. An attacker could exploit this with a crafted XML file to […]
How To Set Up an NFS Mount on CentOS 6
This tutorial covers setting up an NFS mount on CentOS. NFS mounts work to share a directory between several virtual servers. This has the advantage of saving disk space, as the home directory is only kept on one virtual private server, and others can connect to it over the network. When setting up mounts, NFS is most effective for permanent fixtures that should always be accessible.
Oracle Linux 8 — thunderbird — vulnerability — patch and remediation guide (ELSA-2021-3155)
🟠 High ⏱ 15–60 min Last verified: 25 May 2026 Affected versions: Oracle Linux 8 📖 ~4 min read • Source: ELSA advisory ELSA-2021-3155 Related CVEs: CVE-2021-29989 CVE-2021-29985 CVE-2021-29984 CVE-2021-29986 CVE-2021-29980 CVE-2021-29988 Table of contents Symptom & Impact Environment & Reproduction Root Cause Analysis Quick Triage Step-by-Step Diagnosis Solution – Primary Fix Solution – […]
How To Secure Nginx with NAXSI on Ubuntu 16.04
You can greatly increase the security of your Nginx server by using a module like NAXSI. NAXSI (Nginx Anti XSS & SQL Injection) is a free, third-party Nginx module that provides web application firewall features. In this tutorial, you will use NAXSI to secure Nginx on your Ubuntu 16.04 server. By the end of this tutorial, you will know what kinds of attacks NAXSI can block and how to configure NAXSI rules.
Oracle Linux 8 — Unbreakable Enterprise kernel — vulnerability — patch and remediation guide (ELSA-2021-9404)
🟠 High ⏱ 15–60 min Last verified: 25 May 2026 Affected versions: Oracle Linux 8 📖 ~4 min read • Source: ELSA advisory ELSA-2021-9404 Related CVEs: CVE-2020-14304 CVE-2021-3564 CVE-2020-24588 CVE-2020-26147 CVE-2020-26141 CVE-2020-24586 Table of contents Symptom & Impact Environment & Reproduction Root Cause Analysis Quick Triage Step-by-Step Diagnosis Solution – Primary Fix Solution – […]
