Disk encryption is a critical layer of defense-in-depth for any Linux server handling sensitive data. LUKS (Linux Unified Key Setup) is the standard on-disk format for Linux disk encryption, and cryptsetup is the user-space tool that manages it. On RHEL 8, LUKS2 is the default format, bringing improved metadata handling, larger headers, and support for […]
🟠 High ⏱ 15–60 min Last verified: 25 May 2026 Affected versions: openSUSE Tumbleweed 📖 ~4 min read • Source: SUSE advisory openSUSE-SU-2016:2496-1 (see also SUSE bugzilla) Related CVEs: CVE-2016-7052 CVE-2016-7099 CVE-2016-1669 CVE-2016-2178 CVE-2016-5180 CVE-2016-5325 CVE-2016-6304 CVE-2016-6306 Upstream summary: crypto/x509/x509_vfy.c in OpenSSL 1.0.2i allows remote attackers to cause a denial of service (NULL pointer […]
WebDAV allows you to connect file systems from Mac, Windows, and Linux desktop computers to a designated directory on your server. Follow this tutorial to configure and secure WebDAV. Upon completion, you can give authenticated access to files hosted on your server over the Internet.
🟢 Low ⏱ 5–15 min Last verified: 2 July 2019 Affected versions: Ubuntu 14.04 (trusty) 📖 ~4 min read • Source: Ubuntu Security Notice USN-3533-1 Related CVEs: CVE-2018-5702 CVE-2014-4909 Upstream summary: It was discovered that Transmission incorrectly handled certain POST requests to the RPC server and allowed DNS rebinding attack. An attacker could possibly […]
In this tutorial, you will use Certbot to set up a TLS/SSL certificate from Let’s Encrypt on a FreeBSD 12.0 server running Apache as a web server. Additionally, you will automate the certificate renewal process using a cron job.
🟡 Medium ⏱ 10–30 min Last verified: 25 May 2026 Affected versions: Alpine Linux edge / fixed in 4.8.4-r0 📖 ~4 min read • Source: Alpine secdb entry — lftp 4.8.4-r0 Related CVEs: CVE-2018-10916 Upstream summary: Alpine main repository for vedge ships lftp 4.8.4-r0 which addresses CVE-2018-10916. Table of contents Symptom & Impact Environment […]
🟡 Medium ⏱ 10–30 min Last verified: 1 July 2019 Affected versions: SLES 15 📖 ~4 min read • Source: SUSE advisory SUSE-SA:2011:035 (see also SUSE bugzilla) Related CVEs: CVE-2011-2483 Upstream summary: crypt_blowfish before 1.1, as used in PHP before 5.3.7 on certain platforms, PostgreSQL before 8.4.9, and other products, does not properly handle […]
OctoDNS is an infrastructure-as-code tool that allows you to deploy and manage your DNS zones using standard software development principles, including version control, testing, and automated deployment. In this tutorial, you’ll install and configure OctoDNS, create a basic DNS configuration, and begin deploying DNS records to a live provider.
🟠 High ⏱ 15–60 min Last verified: 1 July 2019 Affected versions: Debian 9 (stretch) 📖 ~4 min read • Source: Debian Security Tracker Related CVEs: CVE-2017-9611 CVE-2018-11645 CVE-2018-15908 CVE-2018-16509 CVE-2018-19134 CVE-2019-10216 CVE-2019-14811 CVE-2019-14869 +3 more Table of contents Symptom & Impact Environment & Reproduction Root Cause Analysis Quick Triage Step-by-Step Diagnosis Solution – […]
🟠 High ⏱ 15–60 min Last verified: 25 May 2026 Affected versions: openSUSE Tumbleweed 📖 ~4 min read • Source: SUSE security advisory (see also SUSE bugzilla) Related CVEs: CVE-2019-20478 Upstream summary: In ruamel.yaml through 0.16.7, the load method allows remote code execution if the application calls this method with an untrusted argument. In […]
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