Title

SharePoint must employ NSA-approved cryptography to protect classified information. (Cat I impact)

Discussion

Certain encryption types are no longer considered secure. This setting configures a minimum encryption type for SharePoint. Different versions of the Windows Server OS, and versions of SharePoint will have different suites available.

Check Content

Review the SharePoint server configuration to ensure NSA-approved cryptography is employed to protect classified information. Open MMC. Click "File", "Add/Remove Snap-in", and "add Group Policy Object Editor". Enter a name for the Group Policy Object, or accept the default. Click "Finish". Click "OK". Navigate to Computer Policy >> Computer Configuration >> Administrative Templates >> Network >> SSL Configuration settings. Right-click "SSL Configuration Settings", click "SSL Cipher Suite Order", click "Edit". In the "SSL Cipher Suite Order" dialog box, if "Enabled" is not selected, this is a finding. Under Options, in the "SSL Cipher Suites" text box, a list of cipher suites will be displayed. If any DES or RC4 cipher suites exist in the list, this is a finding.

Fix Text

Configure SharePoint to employ NSA-approved cryptography to protect classified information. Open MMC. Click “File”, “Add/Remove Snap-in”, and “add Group Policy Object Editor”. Enter a name for the Group Policy Object, or accept the default. Click “Finish”. Click “OK”. Navigate to Computer Policy >> Computer Configuration >> Administrative Templates >> Network >> SSL Configuration settings. Right-click “SSL Configuration Settings”, click “SSL Cipher Suite Order”, and then click “Edit”. In the “SSL Cipher Suite Order” dialog box, select "Enabled" option. Under “Options”, in the “SSL Cipher Suites” text box, enter desired cipher suites that are not DES or RC4. Click “OK”.

Additional Identifiers

Rule ID: SV-74399r4_rule

Vulnerability ID: V-59969

Group Title: SRG-APP-000198

Expert Comments

CCIs tied to check.

Controls tied to check. These are derived from the CCIs shown above.