SMTP server in SLmail 3.1 and earlier allows remote attackers to cause a denial of service via malformed commands whose arguments begin with a "(" (parenthesis) character, such as (1) SEND, (2) VRFY, (3) EXPN, (4) MAIL FROM, (5) RCPT TO.
Publication date: Tue, 22 Sep 1998 09:00:00 +0000