Memory leak in eServ 2.9x allows remote attackers to cause a denial of service (memory exhaustion) via a large number of connections, whose memory is not freed when the connection is terminated.
The (1) FTP, (2) POP3, (3) SMTP, and (4) NNTP servers in EServer 2.92 through 2.97, and possibly 2.98, allow remote attackers to cause a denial of service (crash) via a large amount of data.