Cómo crear un servidor web en Node.js con el módulo HTTP
El autor seleccionó el COVID-19 Relief Fund para que reciba una donación como parte del programa Write for DOnations. Cuando visualiza una página web en su navegador,…
How to Configure Postfix Mail Server on Debian 11
Introduction This guide explains how to Configure Postfix Mail Server on Debian 11 on Debian 11 Bullseye. Debian Bullseye uses systemd for service management, nftables as the underlying packet filter (with ufw or iptables front-ends still available), and AppArmor for mandatory access control. Every command is designed for a minimal Debian 11 install with the […]
FreeBSD 13 — apr — multiple vulnerabilities (8 CVEs) — patch and remediation guide
🟡 Medium ⏱ 10–30 min Last verified: 29 June 2022 Affected versions: FreeBSD 13 📖 ~4 min read • Source: FreeBSD VuXML VuXML topic: Apache APR — DoS vulnerabilities Related CVEs: CVE-2009-0023 CVE-2009-1955 CVE-2009-1956 CVE-2009-3560 CVE-2009-3720 CVE-2010-1623 CVE-2011-0419 CVE-2011-1928 Upstream summary: The Apache Portable Runtime Project reports: Reimplement apr_fnmatch() from scratch using a non-recursive […]
Debian 11 — scrollz — vulnerability — patch and remediation guide
🟢 Low ⏱ 5–15 min Last verified: 29 June 2022 Affected versions: Debian 11 (bullseye) 📖 ~4 min read • Source: Debian Security Tracker Related CVEs: CVE-2021-29376 Upstream summary: ircII before 20210314 allows remote attackers to cause a denial of service (segmentation fault and client crash, disconnecting the victim from an IRC server) via […]
Debian 11 — libnids — multiple vulnerabilities (2 CVEs) — patch and remediation guide
🟢 Low ⏱ 5–15 min Last verified: 29 June 2022 Affected versions: Debian 11 (bullseye) 📖 ~4 min read • Source: Debian Security Tracker Related CVEs: CVE-2003-0850 CVE-2010-0751 Upstream summary: The TCP reassembly functionality in libnids before 1.18 allows remote attackers to cause "memory corruption" and possibly execute arbitrary code via "overlarge TCP packets." […]
How to Harden SSH on IBM AIX 7.3
Introduction IBM AIX 7.3 is the latest release of IBM’s enterprise-grade UNIX operating system, running on IBM Power Systems hardware. Known for its reliability, security, and performance in mission-critical environments, AIX 7.3 introduces enhanced virtualization, security hardening, and cloud integration features. This guide covers how to harden ssh on IBM AIX 7.3 with practical examples […]
AlmaLinux 9 — shim-unsigned-x64 — multiple vulnerabilities (8 CVEs) — patch and remediation guide
🟠 High ⏱ 15–60 min Last verified: 25 May 2026 Affected versions: AlmaLinux 9 📖 ~4 min read • Source: AlmaLinux ALSA ALSA-2022:5099 Related CVEs: CVE-2021-3695 CVE-2021-3696 CVE-2021-3697 CVE-2022-28733 CVE-2022-28734 CVE-2022-28735 CVE-2022-28736 CVE-2022-28737 Upstream summary: The grub2 packages provide version 2 of the Grand Unified Boot Loader (GRUB), a highly configurable and customizable boot […]
Oracle Linux 8 — ruby:2.6 security, bug fix, and — enhancement update — new behaviour and fixes (ELSA-2022-5338)
🟡 Medium ⏱ 10–30 min Last verified: 29 June 2022 Affected versions: Oracle Linux 8 📖 ~4 min read • Source: ELSA advisory ELSA-2022-5338 Related CVEs: CVE-2022-28739 Table of contents Symptom & Impact Environment & Reproduction Root Cause Analysis Quick Triage Step-by-Step Diagnosis Solution – Primary Fix Solution – Alternative Approaches Verification & Acceptance […]
FreeBSD 13 — diablo-jdk-freebsd — vulnerability — patch and remediation guide
🟢 Low ⏱ 5–15 min Last verified: 29 June 2022 Affected versions: FreeBSD 13 📖 ~4 min read • Source: FreeBSD VuXML VuXML topic: jdk — jar directory traversal vulnerability Related CVEs: CVE-2005-1080 Upstream summary: Pluf has discovered a vulnerability in Sun Java JDK/SDK, which potentially can be exploited by malicious people to compromise […]
Debian 11 — php-imagick — vulnerability — patch and remediation guide
🟢 Low ⏱ 5–15 min Last verified: 29 June 2022 Affected versions: Debian 11 (bullseye) 📖 ~4 min read • Source: Debian Security Tracker Related CVEs: CVE-2019-11037 Upstream summary: In PHP imagick extension in versions between 3.3.0 and 3.4.4, writing to an array of values in ImagickKernel::fromMatrix() function did not check that the address […]
