SV-38416r1: Graphical desktop environments provided by the system must automatically lock after 15 minutes of inactivity and must require users to re-authenticate to unlock the environment. | HP-UX 11.23 Security Technical Implementation Guide

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Assessment Title

Rule Text

Graphical desktop environments provided by the system must automatically lock after 15 minutes of inactivity and must require users to re-authenticate to unlock the environment.

Description

Discussion Text

If graphical desktop sessions do not lock the session after 15 minutes of inactivity, requiring re-authentication to resume operations, the system or individual data could be compromised by an alert intruder who could exploit the oversight. This requirement applies to graphical desktop environments provided by the system to locally attached displays and input devices as well as to graphical desktop environments provided to remote systems, including thin clients.

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

IA Controls

NIST SP 800-53

Not mappedCCI-000057

Additional Details

Responsibility

System Administrator

IA Controls

PESL-1

References

DPMS Target HP-UX 11.23 DISA DPMS Target HP-UX 11.23 2170

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.fso.hpux11:def:27
# Graphical desktop environments provided by the system must automatically lock after 15 minutes of inactivity and must require users to re-authenticate to unlock the environment.
# Per-module read mechanism curated from static teardown of DISA's SCC tool
# (SCAP Compliance Checker) -- see the SCC Automation Reference above.

# Screen locks within 15 minutes.
# textfilecontent54_object (textfilecontent54_test)
test_1() {
  [ "$(sed -En 's/^[^#]*dtsession\*lockTimeout:[ 	]*([0-9]+)/\1/p' '/etc/dt/config/C/sys.resources')" -le 15 ]
}

if test_1; 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.fso.hpux11:def:27

if [ ! -f "/etc/dt/config/C/sys.resources" ]; then
  echo "PASS"
  exit 0
fi

grep -q "^[^#]*dtsession\\*lockTimeout:[ \t]*15" /etc/dt/config/C/sys.resources
if [ $? -eq 0 ]; then
  echo "PASS"
else
  echo "FAIL"
fi
exit 1

Remediation

Configure the CDE lock manager to lock your screen after a certain amount of inactive time. To configure the CDE lock manager to lock the screen after 15 minutes of inactive time, enter the following commands (ensure to NOT overwrite an existing file):

# cp /usr/dt/config/C/sys.resources /etc/dt/config/C/sys.resources
# vi /etc/dt/config/C/sys.resources

Locate and add/uncomment/change the line to N=15
dtsession*lockTimeout: <N>
dtsession*lockTimeout: 15

Log out of CDE and log back in to verify the timeout is in effect.