The DBMS must use multifactor authentication for network access to privileged accounts.

From Oracle Database 12c Security Technical Implementation Guide

Part of SRG-APP-000149-DB-000104

Associated with: CCI-000765

SV-76193r2_rule The DBMS must use multifactor authentication for network access to privileged accounts.

Vulnerability discussion

Multifactor authentication is defined as using two or more factors to achieve authentication.Factors include: (i) Something a user knows (e.g., password/PIN); (ii) Something a user has (e.g., cryptographic identification device, token); or(iii) Something a user is (e.g., biometric).A privileged account is defined as an information system account with authorizations of a privileged user.Network access is defined as access to an information system by a user (or a process acting on behalf of a user) communicating through a network (e.g., local area network, wide area network, Internet).The lack of multifactor authentication makes it much easier for an attacker to gain unauthorized access to a system.Transport Layer Security (TLS) is the successor protocol to Secure Sockets Layer (SSL). Although the Oracle configuration parameters have names including 'SSL', such as SSL_VERSION and SSL_CIPHER_SUITES, they refer to TLS.

Check content

Review DBMS settings, OS settings, and/or enterprise-level authentication/access mechanism settings to determine whether users logging on to privileged accounts via a network are required to use multifactor authentication. If users logging on to privileged accounts via a network are not required to use multifactor authentication, this is a finding. Use authentication to prove the identities of users who are attempting to log on to the database. Authenticating user identity is imperative in distributed environments, without which there can be little confidence in network security. Passwords are the most common means of authentication. Oracle Database enables strong authentication with Oracle authentication adapters that support various third-party authentication services, including TLS with digital certificates, as well as Smart Cards (CAC, PIV). If the $ORACLE_HOME/network/admin/sqlnet.ora contains entries similar to the following, TLS is enabled. (Note: This assumes that a single sqlnet.ora file, in the default location, is in use. Please see the supplemental file "Non-default sqlnet.ora configurations.pdf" for how to find multiple and/or differently located sqlnet.ora files.) SQLNET.AUTHENTICATION_SERVICES= (BEQ, TCPS) SSL_VERSION = 1.2 or 1.1 SSL_CLIENT_AUTHENTICATION = TRUE WALLET_LOCATION = (SOURCE = (METHOD = FILE) (METHOD_DATA = (DIRECTORY = /u01/app/oracle/product/12.1.0/dbhome_1/owm/wallets) ) ) SSL_CIPHER_SUITES= (SSL_RSA_WITH_AES_256_CBC_SHA384) ADR_BASE = /u01/app/oracle Note: "SSL_VERSION = 1.2 or 1.1" is the actual value, not a suggestion to use one or the other.

Fix text

Configure DBMS, OS and/or enterprise-level authentication/access mechanism to require multifactor authentication for network users logging on to privileged accounts. If appropriate, enable support for Transport Layer Security (TLS) protocols and multifactor authentication through the use of Smart Cards (CAC/PIV).

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