How To Set Up a Firewall with UFW on Debian 11
This tutorial will show you how to set up a firewall with UFW on Debian 11.
Arch Linux — hivex — vulnerability — patch and remediation guide
🟢 Low ⏱ 5–15 min Last verified: 25 May 2026 Affected versions: Arch Linux (rolling release) 📖 ~4 min read • Source: Arch ASA ASA-202105-28 Related CVEs: CVE-2021-3504 Upstream summary: Type: denial of service. Status: Fixed. Affected: 1.3.19-4. Fixed in: 1.3.20-1. Group: AVG-1907. Table of contents Symptom & Impact Environment & Reproduction Root Cause […]
Ubuntu 18.04 — flatpak — multiple vulnerabilities (3 CVEs) — patch and remediation guide
🟡 Medium ⏱ 10–30 min Last verified: 10 June 2022 Affected versions: Ubuntu 18.04 (bionic) 📖 ~4 min read • Source: Ubuntu Security Notice USN-5191-1 Related CVEs: CVE-2021-41133 CVE-2021-21381 CVE-2021-21261 Upstream summary: It was discovered that Flatpak incorrectly handled certain AF_UNIX sockets. An attacker could use this to specially craft a Flatpak application that […]
CentOS Stream 9 — gcc — vulnerability — patch and remediation guide
🟡 Medium ⏱ 10–30 min Last verified: 10 June 2022 Affected versions: CentOS Stream 9 📖 ~4 min read • Source: AlmaLinux/RHEL advisory ALSA-2025:1346 Related CVEs: CVE-2020-11023 Upstream summary: The gcc packages provide compilers for C, C++, Java, Fortran, Objective C, and Ada 95 GNU, as well as related support libraries. Security Fix(es): * […]
Oracle Linux 8 — thunderbird — vulnerability — patch and remediation guide (ELSA-2021-3499)
🟠 High ⏱ 15–60 min Last verified: 10 June 2022 Affected versions: Oracle Linux 8 📖 ~4 min read • Source: ELSA advisory ELSA-2021-3499 Related CVEs: CVE-2021-38493 Table of contents Symptom & Impact Environment & Reproduction Root Cause Analysis Quick Triage Step-by-Step Diagnosis Solution – Primary Fix Solution – Alternative Approaches Verification & Acceptance […]
Arch Linux — lynx — vulnerability — patch and remediation guide
🟠 High ⏱ 15–60 min Last verified: 25 May 2026 Affected versions: Arch Linux (rolling release) 📖 ~4 min read • Source: Arch ASA ASA-202108-9 Related CVEs: CVE-2021-38165 Upstream summary: Type: information disclosure. Status: Fixed. Affected: 2.8.9-3. Fixed in: 2.8.9-4. Group: AVG-2261. Table of contents Symptom & Impact Environment & Reproduction Root Cause Analysis […]
Cómo editar el archivo sudoers
El comando sudo es útil para ejecutar comandos con privilegios normalmente fuera del alcance de su usuario. Esta guía explicará cómo editar el archivo de configuración para personalizar el funcionamiento de sudo.
IBM AIX 7.3 — CVE-2020-4832 — vulnerability — patch and remediation guide
🟡 Medium ⏱ 15–45 min Last verified: 9 June 2022 Affected versions: IBM AIX 7.3 📖 ~4 min read • Source: NVD CVE-2020-4832, IBM Support Bulletin CVE: CVE-2020-4832 NVD summary: IBM PowerHA 7.2 could allow a local attacker to obtain sensitive information from temporary directories after a discovery failure occurs. IBM X-Force ID: 189969. […]
IBM AIX 7.1 — CVE-2022-35637 — denial of service — patch and remediation guide
🟡 Medium ⏱ 15–45 min Last verified: 9 June 2022 Affected versions: IBM AIX 7.1 📖 ~4 min read • Source: NVD CVE-2022-35637, IBM Support Bulletin CVE: CVE-2022-35637 NVD summary: IBM Db2 for Linux, UNIX and Windows 9.7, 10.1, 10.5, 11.1, and 11.5 is vulnerable to a denial of service after entering a malformed […]
openSUSE Tumbleweed — logrotate — multiple vulnerabilities (4 CVEs) — patch and remediation guide
🟡 Medium ⏱ 10–30 min Last verified: 25 May 2026 Affected versions: openSUSE Tumbleweed 📖 ~4 min read • Source: SUSE advisory SUSE-CU-2022:2149-1 (see also SUSE bugzilla) Related CVEs: CVE-2022-1348 CVE-2011-1098 CVE-2011-1154 CVE-2011-1155 Upstream summary: A vulnerability was found in logrotate in how the state file is created. The state file is used to […]
