Intrusion Prevention

Morris.Worm.sendmail.Debug.Mode.OS.Command.Injection

Description

This indicates an attack attempt to exploit a remote Command Injection vulnerability in SendMail in which was exploited by Morris Worm back in 1988.
The vulnerability is due to insufficient sanitizing of user supplied inputs in the application. An authenticate remote attacker may be able to exploit this to execute arbitrary OS commands within the context of the application, via a crafted SMTP request.

Affected Products

Sendmail version 5.60 and prior

Impact

System Compromise: Remote attackers can gain control of vulnerable systems.

Recommended Actions

Upgrade to the latest version available from server
ftp://ftp.sendmail.org/