Intrusion Prevention

SMTP.Unknown.Command

Description

This indicates a potential denial-of-service to the SMTP server.


Simple Mail Transfer Protocol (SMTP) is a protocol used to send e-mail over the internet. There is a vulnerability where the SMTP server cannot handle a certain type of malformed command. This may result in a remote attacker to cause a denial of SMTP service. The server must be restarted to regain functionality.

Affected Products

Microsoft Exchange Server 2000
Microsoft Windows 2000
Microsoft Windows XP

Impact

This vulnerability may allow an attacker to cause a denial-of-service.

Recommended Actions

Apply appropriate patches or upgrade the system to the latest non-vulnerable version.

CVE References

CVE-2002-0055