SV-45253r2: Java permissions must be disallowed (Locked Down Internet zone). | Microsoft Internet Explorer 10 Security Technical Implementation Guide

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Assessment Title

Rule Text

Java permissions must be disallowed (Locked Down Internet zone).

Description

Discussion Text

Java applications could contain malicious code; sites located in this security zone are more likely to be hosted by malicious individuals. This policy setting allows you to manage permissions for Java applets. If you enable this policy setting, options can be chosen from the drop-down box. Use of Custom will control permissions settings individually. Use of Low Safety enables applets to perform all operations. Use of Medium Safety enables applets to run in their sandbox (an area in memory outside of which the program cannot make calls), plus capabilities like scratch space (a safe and secure storage area on the client computer) and user-controlled file I/O. Use of High Safety enables applets to run in their sandbox. If you disable this policy setting, Java applets cannot run. If you do not configure this policy setting, the permission is set to High Safety.

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

Additional Details

Responsibility

System Administrator

References

DPMS Target IE Version 10 DISA DPMS Target IE Version 10 2351

Checks

OVAL

oval:mil.disa.fso.ie:var:31900 ← xccdf_mil.disa.stig_value_JavaPermissions_LockedDownInternetZone_LocalComputer_var

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.

# Windows PowerShell
# Reconstructed from oval:mil.disa.fso.ie:def:319
# Java permissions must be disallowed (Locked Down Internet zone).
# Per-module read mechanism curated from static teardown of DISA's SCC tool
# (SCAP Compliance Checker) -- see the SCC Automation Reference above.

# Computer Configuration\Network\Internet Explorer\Internet Control Panel\Security Page\Locked Down Internet Zone\Java permissions
# registry_object (registry_test)
function test_1 {
  return (((@{String='reg_sz';ExpandString='reg_expand_sz';Binary='reg_binary';DWord='reg_dword';MultiString='reg_multi_sz';QWord='reg_qword';None='reg_none'}[(Get-Item -Path 'Registry::HKEY_LOCAL_MACHINE\Software\Policies\Microsoft\Windows\CurrentVersion\Internet Settings\Lockdown_Zones\3').GetValueKind('1C00').ToString()]) -eq 'reg_dword') -and (((Get-ItemProperty -Path 'Registry::HKEY_LOCAL_MACHINE\Software\Policies\Microsoft\Windows\CurrentVersion\Internet Settings\Lockdown_Zones\3' -Name '1C00' -ErrorAction SilentlyContinue) | Select-Object -ExpandProperty '1C00') -eq 0))
}

if (test_1) {
  Write-Output "PASS"
} else {
  Write-Output "FAIL"
}

Remediation

Set the policy value for Computer Configuration -> Administrative Templates -> Windows Components -> Internet Explorer -> Internet Control Panel -> Security Page -> Locked-Down Internet Zone -> "Java permissions" to "Enabled", and select "Disable Java" from the drop-down box.