SV-281064r1268226: RHEL 10 must enforce mode "0740" or less permissive for local initialization files. | Red Hat Enterprise Linux 10 STIG SCAP Benchmark

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Assessment Title

Rule Text

RHEL 10 must enforce mode "0740" or less permissive for local initialization files.

Description

Discussion Text

Local initialization files are used to configure the user's shell environment upon login. Malicious modification of these files could compromise accounts upon login.

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

IA Controls

NIST SP 800-53

Not mappedCCI-000213

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:mil.disa.stig.rhel10os:def:281064
for user in $(getent passwd | cut -d: -f1); do
    home_dir=$(getent passwd "$user" | cut -d: -f6)
    [ -d "$home_dir" ] || continue
    for file in "$home_dir"/.[ !.]*; do
        [ -f "$file" ] || continue
        perm=$(stat -c "%a" "$file")
        [ "$perm" -gt 740 ] && { echo "FAIL"; exit 1; }
    done
done
echo "PASS"
exit 0

Remediation

Configure RHEL 10 so that all local initialization files have a mode of "0740" or less permissive with the following command:

Note: The example will be for the "disauser" user, who has a home directory of "/home/disauser".

$ sudo chmod 0740 /home/disauser/.<INIT_FILE>