Title

When the UEM server cannot establish a connection to determine the validity of a certificate, the server must be configured not to have the option to accept the certificate. (Cat II impact)

Discussion

When an UEM server accepts an unverified certificate, it may be trusting a malicious actor. For example, messages signed with an invalid certificate may contain links to malware, which could lead to the installation or distribution of that malware on DoD information systems, leading to compromise of DoD sensitive information and other attacks. Satisfies:FIA_X509_EXT.2.2 Reference:PP-MDM-412003

Check Content

Verify the UEM server does not automatically accept a certificate when it cannot establish a connection to determine the validity of a certificate. If the UEM server automatically accepts a certificate when it cannot establish a connection to determine the validity of a certificate, this is a finding.

Fix Text

Configure the UEM server to not automatically accept a certificate when it cannot establish a connection to determine the validity of a certificate.

Additional Identifiers

Rule ID: SV-234379r961038_rule

Vulnerability ID: V-234379

Group Title: SRG-APP-000175

Expert Comments

CCIs tied to check.

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