MD7X-00-004200 MongoDB must map the PKI-authenticated identity to an associated user account.

Information

The DOD standard for authentication is DOD-approved PKI certificates. Once a PKI certificate has been validated, it must be mapped to a DBMS user account for the authenticated identity to be meaningful to MongoDB and useful for authorization decisions.

NOTE: Nessus has provided the target output to assist in reviewing the benchmark to ensure target compliance.

Solution

Add x.509 Certificate subject as an authorized user.

To authenticate with a client certificate, first add the value of the subject from the client certificate as a MongoDB user.

Each unique x.509 client certificate corresponds to a single MongoDB user; meaning a single client certificate cannot authenticate more than one MongoDB user.

Note: The RDNs in the subject string must be compatible with the RFC2253 standard.

Retrieve the RFC2253 formatted subject from the client certificate with the following command:

$ openssl x509 -in <pathToClient PEM> -inform PEM -subject -nameopt RFC2253

The command returns the subject string as well as certificate:

subject= CN=myName,OU=myOrgUnit,O=myOrg,L=myLocality,ST=myState,C=myCountry
-----BEGIN CERTIFICATE-----
# ...
-----END CERTIFICATE-----

Add the RFC2253 compliant value of the subject as a user. Omit spaces as needed.

For example, in the mongo shell, to add the user with both the "readWrite" role in the test database and the "userAdminAnyDatabase" role which is defined only in the admin database:

> db.getSiblingDB("$external").runCommand(
{
createUser: "CN=myName,OU=myOrgUnit,O=myOrg,L=myLocality,ST=myState,C=myCountry",
roles: [
{ role: 'readWrite', db: 'test' },
{ role: 'userAdminAnyDatabase', db: 'admin' }
],
writeConcern: { w: "majority" , wtimeout: 5000 }
}
)

In the above example, to add the user with the "readWrite" role in the test database, the role specification document specified "test" in the "db" field.

To add "userAdminAnyDatabase" role for the user, the above example specified "admin" in the "db" field.

Note: Some roles are defined only in the admin database, including: clusterAdmin, readAnyDatabase, readWriteAnyDatabase, dbAdminAnyDatabase, and userAdminAnyDatabase.

To add a user with these roles, specify "admin" in the "db" field. Refer to Manage Users and Roles for details on adding a user with roles.

To remove a user that is not authorized run the following command:

> use $external
> db.dropUser("<RDN of user>")

Item Details

Audit Name: DISA MongoDB Enterprise Advanced 7.x STIG v1r1

Category: IDENTIFICATION AND AUTHENTICATION

Plugin: MongoDB

Control ID: fb8fc1c163a955d2e6ae57b7daea87cd5d1c3481fe825c43afc661f4df3d3d75

Detections

Analytics

MD7X-00-004200 MongoDB must map the PKI-authenticated identity to an associated user account.

Information

Solution

See Also

Item Details