mediumsystemverified ✓rollback-safe

Disable Ctrl-Alt-Delete reboot

ctrl-alt-del-disabled · UBUNTU ≥ 22, RHEL ≥ 8 · 1 impl

Description

The Ctrl-Alt-Delete key combination should be disabled to prevent unauthorized reboots from the console.

Rationale

Allowing users to reboot with Ctrl-Alt-Delete could cause denial of service or allow attackers with physical access to disrupt operations and potentially boot into single-user mode.

Check → Remediate

Checkservice_state

name:: ctrl-alt-del.target
enabled:: false

Remediateservice_masked

name:: ctrl-alt-del.target

Framework references

STIG

V-257784V-257785 / RHEL-09-211050V-270712 / UBTU-24-300026V-260469 / UBTU-22-211015V-281299 / RHEL-10-700960V-230529 / RHEL-08-040170

NIST 800-53

AC-6

Live verification

rhel10:checkrhel8:checkrhel9:checkubuntu22:checkubuntu24:checkubuntu26:check

#console#reboot#physical-security