SV-204605r991589: The Red Hat Enterprise Linux operating system must display the date and time of the last successful account logon upon logon. | Red Hat Enterprise Linux 7 STIG SCAP Benchmark

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Assessment Title

Rule Text

The Red Hat Enterprise Linux operating system must display the date and time of the last successful account logon upon logon.

Description

Discussion Text

Providing users with feedback on when account accesses last occurred facilitates user recognition and reporting of unauthorized account use.

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

IA Controls

NIST SP 800-53

Not mappedCCI-000052SV-86899V-72275

References

DPMS Target Red Hat Enterprise Linux 7 DISA DPMS Target Red Hat Enterprise Linux 7 2899

Checks

DISA STIG (Manual Reference)

Verify users are provided with feedback on when account accesses last occurred.

Check that "pam_lastlog" is used and not silent with the following command:

# grep pam_lastlog /etc/pam.d/postlogin
session required pam_lastlog.so showfailed

If "pam_lastlog" is missing from "/etc/pam.d/postlogin" file, or the silent option is present, this is a finding.

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.rhel7os:def:204605
# The Red Hat Enterprise Linux operating system must display the date and time of the last successful account logon upon logon.
# Per-module read mechanism curated from static teardown of DISA's SCC tool
# (SCAP Compliance Checker) -- see the SCC Automation Reference above.

# pam_lastlog is configured to show last successful logon
# textfilecontent54_object (textfilecontent54_test)
test_1() {
  grep -Pq '^\s*session\s+.+\s+pam_lastlog\.so\s+(?:\w+\s+)*showfailed\b\s*(?:\w+\b\s*)*\s*(?:#.*)?$' '/etc/pam.d/postlogin' &>/dev/null
}
# pam_lastlog is not used with the silent option
# textfilecontent54_object (textfilecontent54_test)
test_2() {
  ! ( grep -Pq '^\s*session\s+.+\s+pam_lastlog\.so\s+(?:\w+\s+)*silent\b\s*(?:\w+\b\s*)*\s*(?:#.*)?$' '/etc/pam.d/postlogin' &>/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
# OVAL Definition: oval:mil.disa.stig.rhel7os:def:204605
if [ ! -f "/etc/pam.d/postlogin" ]; then echo "PASS"; exit 0; fi
if [ "$(grep -c "^\\s*session\\s+.+\\s+pam_lastlog\\.so\\s+(?:\\w+\\s+)*showfailed\\b\\s*(?:\\w+\\b\\s*)*\\s*(?:#.*)?$" "/etc/pam.d/postlogin")" -ge 1 ] && [ "$(grep -c "^\\s*session\\s+.+\\s+pam_lastlog\\.so\\s+(?:\\w+\\s+)*silent\\b\\s*(?:\\w+\\b\\s*)*\\s*(?:#.*)?$" "/etc/pam.d/postlogin")" -eq 0 ]; then echo "PASS"; exit 0; else echo "FAIL"; exit 1; fi

Remediation

Configure the operating system to provide users with feedback on when account accesses last occurred by setting the required configuration options in "/etc/pam.d/postlogin". 

Add the following line to the top of "/etc/pam.d/postlogin":

session required pam_lastlog.so showfailed