STIGQter: STIG Summary: Adobe Acrobat Professional DC Continuous Security Technical Implementation Guide Version: 1 Release: 2 Benchmark Date: 01 Jul 2019:

Adobe Acrobat Pro DC Continuous access to unknown websites must be restricted.

DISA Rule

SV-94071r1_rule

Vulnerability Number

V-79365

Group Title

SRG-APP-000141

Rule Version

AADC-CN-000280

Severity

CAT III

CCI(s)

• CCI-000381 - The organization configures the information system to provide only essential capabilities.

Weight

10

Fix Recommendation

Configure the following registry value:

Registry Hive:
HKEY_LOCAL_MACHINE
Registry Path:
\Software\Policies\Adobe\Adobe Acrobat\DC\FeatureLockDown\cDefaultLaunchURLPerms\

Value Name: iUnknownURLPerms
Type: REG_DWORD
Value: 3

Configure the policy value for Computer Configuration > Administrative Templates > Adobe Acrobat Pro DC Continuous > Preferences > Trust Manager > 'Access to unknown websites' to 'Enabled' and select 'Block access' in the drop down box.

This policy setting requires the installation of the AcrobatProDCContinuous custom templates included with the STIG package. "AcrobatProDCContinuous.admx" and "AcrobatProDCContinuous.adml" must be copied to the \Windows\PolicyDefinitions and \Windows\PolicyDefinitions\en-US directories respectively.

Check Contents

Verify the following registry configuration:

Utilizing the Registry Editor, navigate to the following:
HKEY_LOCAL_MACHINE\Software\Policies\Adobe\Adobe Acrobat\DC\FeatureLockDown\cDefaultLaunchURLPerms\

Value Name: iUnknownURLPerms
Type: REG_DWORD
Value: 3

If the value for iUnknownURLPerms is not set to “3” and Type is not configured to REG_DWORD or does not exist, this is a finding.

GUI path: Edit > Preferences > Trust Manager > In the 'Internet Access from PDF Files outside the web browser' section > Select 'Change Settings' option > In the 'PDF Files may connect to web sites to share or get information' section, if 'Block PDF files access to all web sites' is selected and greyed out (locked), then this is not a finding. If 'Custom setting' is checked, then in the 'Default behavior for web sites that are not in the above list' section, verify the radio button 'Block access' is checked and greyed out (locked) . If the box is not checked nor greyed out, this is a finding.

Admin Template path: Computer Configuration > Administrative Templates > Adobe Acrobat Pro DC Continuous > Preferences > Trust Manager > 'Access to unknown websites' must be set to 'Enabled' and 'Block access' selected in the drop down box.

This policy setting requires the installation of the AcrobatProDCContinuous custom templates included with the STIG package. "AcrobatProDCContinuous.admx" and "AcrobatProDCContinuous.adml" must be copied to the \Windows\PolicyDefinitions and \Windows\PolicyDefinitions\en-US directories respectively.

Vulnerability Number

V-79365

Documentable

False

Rule Version

AADC-CN-000280

Severity Override Guidance

Verify the following registry configuration:

Utilizing the Registry Editor, navigate to the following:
HKEY_LOCAL_MACHINE\Software\Policies\Adobe\Adobe Acrobat\DC\FeatureLockDown\cDefaultLaunchURLPerms\

Value Name: iUnknownURLPerms
Type: REG_DWORD
Value: 3

If the value for iUnknownURLPerms is not set to “3” and Type is not configured to REG_DWORD or does not exist, this is a finding.

GUI path: Edit > Preferences > Trust Manager > In the 'Internet Access from PDF Files outside the web browser' section > Select 'Change Settings' option > In the 'PDF Files may connect to web sites to share or get information' section, if 'Block PDF files access to all web sites' is selected and greyed out (locked), then this is not a finding. If 'Custom setting' is checked, then in the 'Default behavior for web sites that are not in the above list' section, verify the radio button 'Block access' is checked and greyed out (locked) . If the box is not checked nor greyed out, this is a finding.

Admin Template path: Computer Configuration > Administrative Templates > Adobe Acrobat Pro DC Continuous > Preferences > Trust Manager > 'Access to unknown websites' must be set to 'Enabled' and 'Block access' selected in the drop down box.

This policy setting requires the installation of the AcrobatProDCContinuous custom templates included with the STIG package. "AcrobatProDCContinuous.admx" and "AcrobatProDCContinuous.adml" must be copied to the \Windows\PolicyDefinitions and \Windows\PolicyDefinitions\en-US directories respectively.

Check Content Reference

M

Target Key

3371

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