Description
This module exploits sendmail's well-known historical debug mode to escape to a shell and execute commands in the SMTP RCPT TO command.
This vulnerability was exploited by the Morris worm in 1988-11-02. Cliff Stoll reports on the worm in the epilogue of The Cuckoo's Egg.
Currently, only cmd/unix/reverse and cmd/unix/generic are supported.
Module options
To display the available options, load the module within the Metasploit console and run the commands 'show options' or 'show advanced':
msf > use exploit/unix/smtp/morris/sendmail_debugmsf undefined(sendmail_debug) > show actions ...actions...msf undefined(sendmail_debug) > set ACTION < action-name >msf undefined(sendmail_debug) > show options ...show and set options...msf undefined(sendmail_debug) > runPrioritise with Active Threat Intelligence
With curated Threat Intelligence, you can see which vulnerabilities truly put you at risk, prioritize what matters most, and act before attackers do.
Explore Intelligence Hub