Detections
Analytics

1.17 O365-CO-000015

Information

Consistent MIME handling must be enabled for all Office 365 ProPlus programs.

GROUP ID: V-223297
RULE ID: SV-223297r961050

Encryption is only as good as the encryption modules utilized. Unapproved cryptographic module algorithms cannot be verified and cannot be relied on to provide confidentiality or integrity, and DoD data may be compromised due to weak algorithms. The use of TLS provides confidentiality of data in transit between the application server and client. FIPS 140-2 approved TLS versions include TLS V1.0 or greater.

TLS must be enabled and non-FIPS-approved SSL versions must be disabled. NIST SP 800-52 specifies the preferred configurations for government systems.

Solution

Set the policy value for

Computer Configuration >> Administrative Templates >> Microsoft Office 2016 (Machine) >> Security Settings >> IE Security 'Consistent Mime Handling'

to 'Enabled' and select the check boxes for all installed Office programs.

See Also

https://workbench.cisecurity.org/benchmarks/26066

Item Details

Category: IDENTIFICATION AND AUTHENTICATION

References: 800-53|IA-7, CAT|II, CCI|CCI-000803, Rule-ID|SV-223297r961050_rule, STIG-ID|O365-CO-000015, Vuln-ID|V-223297

Plugin: Windows

Control ID: b2042c9964394bd3780e7391434dbb4104502a227f112301362c575457fcb438