SV-281274r1197245: RHEL 10 must prevent a user from overriding the disabling of the graphical user interface autorun function. | Red Hat Enterprise Linux 10 STIG SCAP Benchmark

Loading benchmark…

Assessment Title

Rule Text

RHEL 10 must prevent a user from overriding the disabling of the graphical user interface autorun function.

Description

Discussion Text

Techniques used to address this include protocols using nonces (e.g., numbers generated for a specific one-time use) or challenges (e.g., Transport Layer Security [TLS], WS_Security). Additional techniques include time-synchronous or challenge-response one-time authenticators. Satisfies: SRG-OS-000114-GPOS-00059, SRG-OS-000378-GPOS-00163

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

IA Controls

NIST SP 800-53

Not mappedCCI-000778Not mappedCCI-001958

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.

#!/bin/bash
# Reconstructed from oval:mil.disa.stig.rhel10os:def:281274
# RHEL 10 must prevent a user from overriding the disabling of the graphical user interface autorun function.
# Per-module read mechanism curated from static teardown of DISA's SCC tool
# (SCAP Compliance Checker) -- see the SCC Automation Reference above.

# check that /etc/dconf/profile/user:system-db is at minimum set to local
# textfilecontent54_object (textfilecontent54_test)
test_1() {
  grep -Pq '^\s*system-db\s*:\s*local\s*$' '/etc/dconf/profile/user' &>/dev/null
}
# Check that the automount setting is locked from nonprivileged user modification
# textfilecontent54_object (textfilecontent54_test)
test_2() {
  grep -rqP --include='*' '^\s*\/org\/gnome\/desktop\/media-handling\/autorun-never$' '/etc/dconf/db/local.d/locks' &>/dev/null
}

if ( test_1 && test_2 ); then
  echo "PASS"
else
  echo "FAIL"
fi

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
# This script implements DISA STIG oval:mil.disa.stig.rhel10os:def:281274

if [ ! -d "/etc/dconf/profile/user" ]; then echo "PASS"; exit 0; fi
if [ ! -f "/etc/dconf/profile/user/system-db" ]; then echo "FAIL"; exit 1; fi
grep -q "^\\s*system-db\\s*:\\s*local\\s*$" /etc/dconf/profile/user/system-db || { echo "FAIL"; exit 1; }

if [ ! -d "/etc/dconf/db/local.d/locks" ]; then echo "PASS"; exit 0; fi
for file in /etc/dconf/db/local.d/locks/*; do
    if [[ $(basename $file) =~ ^[0-9]+-security-settings-lock$ ]]; then
        grep -q "^\\s*\\/org\\/gnome\\/desktop\\/media-handling\\/autorun-never$" $file && { echo "PASS"; exit 0; }
    fi
done
echo "FAIL"; exit 1

Remediation

Configure RHEL 10 so that the GNOME desktop does not allow a user to change the setting that disables autorun on removable media.

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/locks/00-security-settings-lock" file to prevent user modification:

$ sudo vi /etc/dconf/db/local.d/locks/00-security-settings-lock

/org/gnome/desktop/media-handling/autorun-never

Update the dconf system databases:

$ sudo dconf update