Description
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.
References
- slmail-parens-overload(1664) vdb-entry
- 19980922 WARNING! SMTP Denial of Service in SLmail ver 3.1 mailing-list
- 19980922 WARNING! SMTP Denial of Service in SLmail ver 3.1 mailing-list