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Check: GEN004620

AIX 6.1 SECURITY TECHNICAL IMPLEMENTATION GUIDE: GEN004620 (in versions v1 r14 through v1 r10)

Title

The Sendmail server must have the debug feature disabled. (Cat I impact)

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 installed on the system. # echo \$Z | /usr/sbin/sendmail -bt -d0 If the sendmail reported version 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.

Additional Identifiers

Rule ID: SV-4690r2_rule

Vulnerability ID: V-4690

Group Title: GEN004620

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CCIs

CCIs tied to check.

Number	Definition
CCI-000366	The organization implements the security configuration settings.

Controls

Controls tied to check. These are derived from the CCIs shown above.

Number	Title
CM-6	Configuration Settings