Details

By default, the user can update Adobe certificates from an Adobe server through the GUI. When updating Adobe certificates is disabled, it prevents the automatic download and installation of certificates and disables and locks the end user’s ability to download those certificates.

Solution

Configure the following registry value:

Registry Hive:
HKEY_CURRENT_USER
Registry Path:
SoftwareAdobeAdobe Acrobat2015SecuritycDigSigcAdobeDownload

Value Name: bLoadSettingsFromURL
Type: REG_DWORD
Value: 0

Configure the policy value for User Configuration > Administrative Templates > Adobe Acrobat Pro DC Classic > Preferences > Trust Manager > ‘Load trusted certificates from an Adobe AATL server’ to ‘Disabled’.

This policy setting requires the installation of the AcrobatProDCClassic custom templates included with the STIG package. ‘AcrobatProDCClassic.admx’ and ‘AcrobatProDCClassic.adml’ must be copied to the WindowsPolicyDefinitions and WindowsPolicyDefinitionsen-US directories respectively.

Supportive Information

The following resource is also helpful.

• https://dl.dod.cyber.mil/wp-content/uploads/stigs/zip/U_Adobe_Acrobat_Pro_DC_Classic_V2R1_STIG.zip

This security hardening control applies to the following category of controls within NIST 800-53: System and Communications Protection.This control applies to the following type of system Windows.

References

• 800-53|SC-23(5)
• CAT|III
• CCI|CCI-002470
• Rule-ID|SV-213114r557504_rule
• STIG-ID|AADC-CL-001320
• STIG-Legacy|SV-94857
• STIG-Legacy|V-80153
• Vuln-ID|V-213114

Source

• Tenable.com/audits