🟢 Low ⏱ 5–15 min Last verified: 29 March 2020 Affected versions: Oracle Linux 8 📖 ~4 min read • Source: ELSA advisory ELSA-2021-4373 Related CVEs: CVE-2020-14155 CVE-2019-20838 Table of contents Symptom & Impact Environment & Reproduction Root Cause Analysis Quick Triage Step-by-Step Diagnosis Solution – Primary Fix Solution – Alternative Approaches Verification & […]
On October 21, 2016, a privilege escalation vulnerability in the Linux kernel was disclosed. The bug is nicknamed Dirty COW because the underlying issue was a race condition in the way kernel handles copy-on-write (COW). Exploiting this bug means that a regular, unprivileged user on your server can gain write access to any file they can read, and can therefore increase their privileges on the system. This tutorial explains how to protect your server from this vulnerability.
How to Configure HAProxy for HTTP and TCP Load Balancing on RHEL 7 HAProxy is one of the most widely deployed open-source load balancers in production infrastructure, renowned for its high throughput, low latency, and fine-grained configurability. On RHEL 7 it is available directly from the base repositories and integrates cleanly with systemctl and firewalld. […]
🟡 Medium ⏱ 10–30 min Last verified: 25 May 2026 Affected versions: OpenBSD 7.6 📖 ~4 min read • Source: OpenBSD 7.6 errata 014_rpki Errata topic: Reliability: rpki (All architectures) Issued: April 9, 2025 Upstream summary: Incorrect internal RRDP state handling in rpki-client can lead to a denial of service. Table of contents Symptom […]
In this tutorial, we will begin with understanding RubyGems, the Gem package format, and then learn how to package a Ruby application from start to finish, beginning with creating the package structure to contain the code (and other related material).
O autor selecionou a Open Internet/Free Speech Fund para receber uma doação como parte do programa Write for DOnations. O Jitsi Meet é um aplicativo de…
🟠 High ⏱ 15–60 min Last verified: 29 March 2020 Affected versions: Oracle Linux 8 📖 ~4 min read • Source: ELSA advisory ELSA-2023-12675 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 […]
TimescaleDB is an open-source database optimized for storing time series data. It is implemented as an extension of PostgreSQL and combines the ease-of-use of relational databases and the speed of NoSQL databases. By following this tutorial, you’ll set up TimescaleDB on CentOS 7, configure it, and learn how to work with it. You’ll run through creating time series databases and making simple queries. Finally, you’ll see how to get rid of unnecessary data.
When administering a FreeBSD server, it is important to understand the basic maintenance procedures that will help you keep your server in good shape. In this guide, we will cover the basic procedures needed to keep your server up-to-date and functioning properly. We will cover how to update the base operating system maintained by the FreeBSD team. We will also discuss how to update and maintain optional software installed through the ports or packages systems.
🔴 Critical ⏱ 5–30 min Last verified: 28 March 2020 Affected versions: Debian 9 📖 ~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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