Ubuntu 16.04 — fail2ban — vulnerability — patch and remediation guide
🟢 Low ⏱ 5–15 min Last verified: 23 February 2022 Affected versions: Ubuntu 16.04 (xenial) 📖 ~4 min read • Source: Ubuntu Security Notice USN-5232-1 Related CVEs: CVE-2021-32749 Upstream summary: Jakub Żoczek discovered that certain Fail2ban actions handled whois responses in an insecure way. If Fail2ban was configured to use certain mail actions like […]