Details

Undesirable reboots can occur if the CTRL-ALT-DELETE key sequence is not disabled. Such reboots may cause a loss of data or loss of access to critical information.

Solution

Ensure the CTRL-ALT-DELETE key sequence has been disabled and attempts to use the sequence are logged.
In the /etc/inittab file replace:
ca::ctrlaltdel:/sbin/shutdown -t3 -r now
with
ca:nil:ctrlaltdel:/usr/bin/logger -p security.info ‘Ctrl-Alt-Del was pressed’

Supportive Information

The following resource is also helpful.

• http://iasecontent.disa.mil/stigs/zip/U_RedHat_5_V1R18_STIG.zip

This security hardening control applies to the following category of controls within NIST 800-53: Configuration Management.This control applies to the following type of system Unix.

References

• 800-53|CM-6b.
• CAT|I
• CCI|CCI-000366
• Group-ID|V-4342
• Rule-ID|SV-37327r1_rule
• STIG-ID|GEN000000-LNX00580
• Vuln-ID|V-4342

Source

• Tenable.com/audits