Cómo crear un acortador de URL con Django y GraphQL
El autor seleccionó Girls Who Code para recibir una donación como parte del programa Write for DOnations. GraphQL es un estándar de API de código abierto creado por Facebook como alternativa a…
Oracle Linux 8 — java-11-openjdk security, bug fix, and — enhancement update — new behaviour and fixes (ELSA-2022-5683)
🟠 High ⏱ 15–60 min Last verified: 15 February 2021 Affected versions: Oracle Linux 8 📖 ~4 min read • Source: ELSA advisory ELSA-2022-5683 Related CVEs: CVE-2022-21541 CVE-2022-21540 CVE-2022-34169 Table of contents Symptom & Impact Environment & Reproduction Root Cause Analysis Quick Triage Step-by-Step Diagnosis Solution – Primary Fix Solution – Alternative Approaches Verification […]
Ubuntu 14.04 LTS – root filesystem full causes service outages
🔴 Critical ⏱ 5–30 min Last verified: 15 February 2021 Affected versions: Ubuntu 14.04 LTS Ubuntu 14.04 Ubuntu 14.04.6 📖 ~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 […]
Ubuntu 16.04 LTS NTP drift causes TLS and token validation failures
🟡 Medium ⏱ 5–30 min Last verified: 15 February 2021 Affected versions: 16.04 📖 ~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 & Cross-Refs […]
openSUSE Tumbleweed — pngcheck — vulnerability — patch and remediation guide
🟡 Medium ⏱ 10–30 min Last verified: 25 May 2026 Affected versions: openSUSE Tumbleweed 📖 ~4 min read • Source: SUSE advisory openSUSE-SU-2020:2177-1 (see also SUSE bugzilla) Related CVEs: CVE-2020-27818 Upstream summary: A flaw was found in the check_chunk_name() function of pngcheck-2.4.0. An attacker able to pass a malicious file to be processed by […]
RHEL 7 MariaDB service Fails After Unclean Shutdown
🟠 High ⏱ 5–30 min Last verified: 15 February 2021 Affected versions: RHEL 7 📖 ~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 & […]
How to Manage Users and Groups on Oracle Linux 8
Introduction Oracle Linux 8 ships with a stable, security-hardened base that makes deploying manage users and groups on oracle linux 8 both straightforward and auditable. This tutorial covers the complete procedure for how to Manage Users and Groups on Oracle Linux 8, including dnf module streams where applicable, systemd unit management, and the firewalld rules […]
FreeBSD 12 — py34-salt — multiple vulnerabilities (10 CVEs) — patch and remediation guide
🟠 High ⏱ 15–60 min Last verified: 15 February 2021 Affected versions: FreeBSD 12 📖 ~4 min read • Source: FreeBSD VuXML VuXML topic: salt — multiple vulnerabilities in salt-master process Related CVEs: CVE-2016-1866 CVE-2016-3176 CVE-2017-12791 CVE-2017-14695 CVE-2017-14696 CVE-2018-15750 CVE-2018-15751 CVE-2019-17361 +2 more Upstream summary: F-Secure reports: CVE-2020-11651 – Authentication bypass vulnerabilities The ClearFuncs […]
How to Configure Multi-Site Active Directory on Windows Server 2016
Introduction A multi-site Active Directory deployment on Windows Server 2016 maps your physical network topology onto AD Sites and Services, ensuring that domain controllers authenticate users with the nearest DC rather than sending login traffic across slow WAN links. AD Sites control replication traffic, Kerberos referrals, and Group Policy application. This guide covers designing and […]
Ubuntu 20.04 — libexif — multiple vulnerabilities (9 CVEs) — patch and remediation guide
🟡 Medium ⏱ 10–30 min Last verified: 15 February 2021 Affected versions: Ubuntu 20.04 (focal) 📖 ~4 min read • Source: Ubuntu Security Notice USN-4624-1 Related CVEs: CVE-2020-0452 CVE-2020-0093 CVE-2020-0182 CVE-2020-0198 CVE-2020-13112 CVE-2020-13113 CVE-2020-13114 CVE-2018-20030 +1 more Upstream summary: It was discovered that libexif incorrectly handled certain inputs. An attacker could possibly use this […]