SV-281278r1208799: RHEL 10 must automatically lock graphical user sessions after 10 minutes of inactivity. | Red Hat Enterprise Linux 10 STIG SCAP Benchmark

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Assessment Title

Rule Text

RHEL 10 must automatically lock graphical user sessions after 10 minutes of inactivity.

Description

Discussion Text

A session timeout lock is a temporary action taken when a user stops work and moves away from the immediate physical vicinity of the information system but does not log out because of the temporary nature of the absence. Rather than relying on the user to manually lock their operating system session prior to vacating the vicinity, the GNOME desktop can be configured to identify when a user's session has idled and take action to initiate a session lock. Satisfies: SRG-OS-000029-GPOS-00010, SRG-OS-000031-GPOS-00012

How this relates to the STIG checklist: STIG vs SCAP benchmark.

IA Controls

NIST SP 800-53

Not mappedCCI-000057Not mappedCCI-000060

References

DPMS Target Red Hat Enterprise Linux 10 DISA DPMS Target Red Hat Enterprise Linux 10 5733

SCC Automation Reference

The reconstructed evaluation script behind this rule's OVAL check(s) — every module a compound check combines, with this rule's own concrete values and DISA's SCC tool's real per-module mechanism curated from static teardown of SCC releases.

Assessment Script Powered by AISandbox-executed

A standalone Shell script to assess this control automatically. Review before running it in your environment.

Syntax-checked and actually executed in an isolated sandbox (not the real system this checks) — confirmed to run without errors.

#!/bin/sh
# OVAL definition: oval:mil.disa.stig.rhel10os:def:281278

if [ ! -f "/etc/dconf/db/local.d/00-screensaver" ]; then
  echo "FAIL"
  exit 1
fi

grep -q "^[org/gnome/desktop/session]" /etc/dconf/db/local.d/00-screensaver || {
  echo "FAIL"
  exit 1
}

grep -q "idle-delay=uint32 600" /etc/dconf/db/local.d/00-screensaver || {
  echo "FAIL"
  exit 1
}

echo "PASS"
exit 0

Remediation

Configure RHEL 10 to initiate a screensaver after a 10-minute period of inactivity for graphical user interfaces.

Note: The example below is using the database "local" for the system. If the system is using another database in "/etc/dconf/profile/user", the file should be created under the appropriate subdirectory.

Update the "/etc/dconf/db/local.d/00-screensaver" file to prevent nonprivileged users from modifying the screensaver idle-delay setting:

$ sudo vi /etc/dconf/db/local.d/00-screensaver

[org/gnome/desktop/session]
# Set the lock time out to 900 seconds before the session is considered idle
idle-delay=uint32 600

Update the system databases:

$ sudo dconf update