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The Sendmail server must have the debug feature disabled.


Overview

Finding ID Version Rule ID IA Controls Severity
V-4690 GEN004620 SV-35070r1_rule ECSC-1 High
Description
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.
STIG Date
HP-UX 11.23 Security Technical Implementation Guide 2015-12-02

Details

Check Text ( C-36573r1_chk )
Check for an enabled debug command provided by the SMTP service.
# telnet localhost 25
debug

If the command does not return a 500 error code of command unrecognized, this is a finding.
Fix Text (F-4618r2_fix)
Obtain and install a more recent version of Sendmail, which does not implement the DEBUG feature.