The Sendmail server must have the debug feature disabled.

From SOLARIS 10 SPARC SECURITY TECHNICAL IMPLEMENTATION GUIDE

Associated with IA controls: ECSC-1

Associated with: CCI-000366

SV-42311r1_rule The Sendmail server must have the debug feature disabled.

Vulnerability discussion

Debug mode is a feature present in older versions of Sendmail which, if not disabled, may allow an attacker to gain access to a system through the Sendmail service.

Check content

Check for an enabled debug command provided by the SMTP service. Procedure: # telnet localhost 25 debug If the command does not return a 500 error code of command unrecognized, this is a finding. If telnet is unavailable for testing, check the version of sendmail. Run the following as a non-privileged user. $ echo \$Z | /usr/sbin/sendmail -bt -d0 If the version reported is less than 8.6, this is a finding.

Fix text

Obtain and install a more recent version of Sendmail, which does not implement the DEBUG feature.

Pro Tips

Lavender hyperlinks in small type off to the right (of CSS class id, if you view the page source) point to globally unique URIs for each document and item. Copy the link location and paste anywhere you need to talk unambiguously about these things.

You can obtain data about documents and items in other formats. Simply provide an HTTP header Accept: text/turtle or Accept: application/rdf+xml.