CVE-1999-1109 – Eric Allman Sendmail 8.9.1/8.9.3 - ETRN Denial of Service

https://notcve.org/view.php?id=CVE-1999-1109

22 Dec 1999 — Sendmail before 8.10.0 allows remote attackers to cause a denial of service by sending a series of ETRN commands then disconnecting from the server, while Sendmail continues to process the commands after the connection has been terminated. • https://www.exploit-db.com/exploits/19701 •