Sendmail < 8.10.1 ETRN Command Remote DoS
High Nessus Network Monitor Plugin ID 2024
SynopsisThe remote host is vulnerable to a Denial of Service (DoS) attack.
DescriptionThe remote SMTP server has a flaw that may allow remote attackers to cause a denial of service by sending a series of ETRN commands and then disconnecting from this server.
SolutionUpgrade to Sendmail 8.10.1 or higher.