The following command is valid: -

./core-service=management/management-interface=http-interface:write-attribute(name=http-upgrade.sasl-authentication-factory, value=management-sasl-authentication)

However tab completion is not possible to discover the available capabilities for the value.

I suspect the dot notation to reference the sasl-authentication-factory sub attribute is not followed.

(I am initially raising against the CLI but I don't know how the name parameter is handled here so could be a general management issue)