| To prevent the compromise of authentication information, such as passwords and PINs, during the authentication process, the feedback from the information system must not provide any information that would allow an unauthorized user to compromise the authentication mechanism.
Obfuscation of user-provided information when typed into the system is a method used in addressing this risk.
For example, displaying asterisks when a user types in a password or PIN, is an example of obscuring feedback of authentication information.
This requirement is applicable when md5-based password authentication is enabled. When this is the case, password-authenticated accounts can be created in and authenticated by EDB Postgres Advanced Server. Other STIG requirements prohibit the use of password authentication except when justified and approved. This deals with the exceptions.
The psql command line tool is part of any PostgreSQL installation. Other command-line tools may also exist. These tools can accept a plain-text password, but do offer alternative techniques. Since the typical user of these tools is a database administrator, the consequences of password compromise are particularly serious. Therefore, the use of plain-text passwords must be prohibited, as a matter of practice and procedure. |