Fail2ban is a service that can be run on your server to dynamically block clients that repeatedly fail to authenticate correctly with your services . This can help mitigate the affect of brute force attacks and illegitimate users of your services. In this guide, we’ll demonstrate how to install and configure fail2ban to protect SSH on a Rocky Linux 8 server.
🟡 Medium ⏱ 10–30 min Last verified: 22 February 2022 Affected versions: Ubuntu 16.04 (xenial) 📖 ~4 min read • Source: Ubuntu Security Notice USN-5969-1 Related CVEs: CVE-2021-45909 CVE-2021-45910 CVE-2021-45911 Upstream summary: It was discovered that gif2apng contained multiple heap-base overflows. An attacker could potentially exploit this to cause a denial of service (system […]
Securing your Apache web server with a free SSL/TLS certificate from Let’s Encrypt is one of the most important steps you can take to protect your visitors and improve your site’s trustworthiness. Certbot, the official Let’s Encrypt client, automates the entire certificate issuance and renewal process. On RHEL 8, Certbot is available through the EPEL […]
🟠 High ⏱ 15–60 min Last verified: 22 February 2022 Affected versions: SLES 15 📖 ~4 min read • Source: SUSE advisory SUSE-CU-2019:695-1 (see also SUSE bugzilla) Related CVEs: CVE-2017-7500 CVE-2021-3521 CVE-2021-3421 CVE-2021-20266 CVE-2021-20271 Upstream summary: It was found that rpm did not properly handle RPM installations when a destination path was a symbolic […]
🟠 High ⏱ 15–60 min Last verified: 22 February 2022 Affected versions: Oracle Linux 8 📖 ~4 min read • Source: ELSA advisory ELSA-2021-0288 Related CVEs: CVE-2021-23964 CVE-2021-23953 CVE-2021-23954 CVE-2021-23960 CVE-2020-26976 Table of contents Symptom & Impact Environment & Reproduction Root Cause Analysis Quick Triage Step-by-Step Diagnosis Solution – Primary Fix Solution – Alternative […]
🟠 High ⏱ 15–60 min Last verified: 25 May 2026 Affected versions: openSUSE Tumbleweed 📖 ~4 min read • Source: SUSE advisory openSUSE-SU-2025:14697-1 (see also SUSE bugzilla) Related CVEs: CVE-2022-23476 Upstream summary: Nokogiri is an open source XML and HTML library for the Ruby programming language. Nokogiri `1.13.8` and `1.13.9` fail to check the […]
🟡 Medium ⏱ 10–30 min Last verified: 25 May 2026 Affected versions: AlmaLinux 8 📖 ~4 min read • Source: AlmaLinux ALSA ALBA-2022:1848 Upstream summary: For detailed information on changes in this release, see the AlmaLinux Release Notes linked from the References section. Table of contents Symptom & Impact Environment & Reproduction Root Cause […]
🟡 Medium ⏱ 10–30 min Last verified: 25 May 2026 Affected versions: openSUSE Tumbleweed 📖 ~4 min read • Source: SUSE advisory SUSE-IU-2022:632-1 (see also SUSE bugzilla) Related CVEs: CVE-2022-27239 CVE-2012-1586 CVE-2020-14342 CVE-2021-20208 Upstream summary: In cifs-utils through 6.14, a stack-based buffer overflow when parsing the mount.cifs ip= command-line argument could lead to local […]
🟠 High ⏱ 15–60 min Last verified: 25 May 2026 Affected versions: Alpine Linux edge / fixed in 9.1.2-r0 📖 ~4 min read • Source: Alpine secdb entry — grafana 9.1.2-r0 Related CVEs: CVE-2022-31176 CVE-2022-31097 CVE-2022-31107 CVE-2022-29170 CVE-2022-21702 CVE-2022-21703 CVE-2022-21713 CVE-2022-21673 +12 more Upstream summary: Alpine community repository for vedge ships grafana 9.1.2-r0 which […]
🟢 Low ⏱ 5–15 min Last verified: 21 February 2022 Affected versions: Debian 11 (bullseye) 📖 ~4 min read • Source: Debian Security Tracker Related CVEs: CVE-2005-0017 CVE-2005-0018 Upstream summary: The f2c translator in the f2c package 3.1 allows local users to read arbitrary files via a symlink attack on temporary files. Table of […]
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