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RHEL-10-700970 RHEL 10 must disable the debug-shell systemd service.

DISA STIG library V1R3
All changes in this version
first version loaded CAT II

Maps to AC-6(10) via CCI-002235

Title

RHEL 10 must disable the debug-shell systemd service.

Control

Verify RHEL 10 is configured to mask the debug-shell systemd service with the following command: $ sudo systemctl status debug-shell.service o debug-shell.service Loaded: masked (Reason: Unit debug-shell.service is masked.) Active: inactive (dead) If the "debug-shell.service" is loaded and not masked, this is a finding.

Discussion

The debug-shell requires no authentication and provides root privileges to anyone who has physical access to the machine. While this feature is disabled by default, masking it adds an additional layer of assurance that it will not be enabled via a dependency in systemd. This also prevents attackers with physical access from trivially bypassing security on the machine through valid troubleshooting configurations and gaining root access when the system is rebooted.

Related controls

CCI-002235

Fix

Configure RHEL 10 to mask the debug-shell systemd service with the following command: $ sudo systemctl disable --now debug-shell.service $ sudo systemctl mask --now debug-shell.service