Detections
Analytics

AADC-CN-001280 - Adobe Acrobat Pro DC Continuous Default Handler changes must be disabled.

Information

Acrobat Pro allows users to change the version of Acrobat Pro that is used to read PDF files. This is a risk if multiple versions of Acrobat are installed on the system and the other version has dissimilar security configurations or known vulnerabilities. When the Default PDF Handler is disabled, the end users will not be able to change the default PDF viewer.

Solution

Configure the following registry value:

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

Value Name: bDisablePDFHandlerSwitching
Type: REG_DWORD
Value: 1

Configure the policy value for Computer Configuration > Administrative Template > Adobe Acrobat Pro DC Continuous > Preferences > General > 'Disable PDF handler switching' to 'Enabled'.

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.

See Also

https://dl.dod.cyber.mil/wp-content/uploads/stigs/zip/U_Adobe_Acrobat_Pro_DC_Continuous_V1R2_STIG.zip

Item Details

Category: CONFIGURATION MANAGEMENT

References: 800-53|CM-5(6), CAT|III, CCI|CCI-001499, Rule-ID|SV-94091r1_rule, STIG-ID|AADC-CN-001280, Vuln-ID|V-79385

Plugin: Windows

Control ID: a7c6f483a3e4e293447fd1f8d56c4c1d4aaf918b91ca7aacd256e99c59e19fe8