Mitigating GRC risks for SAP systems
Handle the default users and their initial passwords
Wildgrowth of characters used in user IDs can have negative effects. Set a bar on it by limiting the character set in the first place. In the SAP system, depending on the release of the SAP_BASIS software component, you can create users whose names may contain "alternative" spaces. In Unicode systems, there are different spaces, which are represented by different hexadecimal values. The usual space has a hexadecimal value of 20, but there are alternative spaces (wide spaces), which can be recognised, for example, as double width or not at all as character spacing. You can use these alternate spaces when entering the user ID by pressing the Alt key. For example, the key combination (Alt) + 0160 can create a space with a non-breaking space. You can also create a user whose ID consists only of alternate spaces. Users with such IDs will write all change documents, but the IDs can still cause confusion if, for example, they are not recognisable as a user ID or if it appears that no user is displayed for the change document. In addition, certain special characters may cause problems in other applications (e.g. in transport management). Therefore, we will show you how to prevent such problems by limiting the character set.
If you want to know more about SAP authorizations, visit the website www.sap-corner.de.
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Authorization: An authorization allows a user to perform a specific activity in the SAP system based on a set of authorization object field values. Authorizations allow users to perform actions within the system.
Use automatic synchronisation in central user management
Single sign-on (SSO): This solution is useful if you have not yet used SSO for your SAPS systems or if not all SAP systems are integrated into the SSO solution. In such cases, you must implement the Web application in a system that supports SSO logins, such as Central User Management (ZBV), SAP Identity Management (ID Management), or Active Directory (AD).
How to maintain security policies and map them to your users is described in Tip 5, "Defining User Security Policy." You need a separate security policy for administrators to implement this tip, which is often useful for other reasons. In this security policy, you then set the policy attribute SERVER_LOGON_PRIVILEGE to 1. For example, you can also include the DISABLE_PASSWORD_LOGON policy attribute setting, because administrators often want to be able to log in with a password on the system.
With "Shortcut for SAP systems" you can automate the assignment of roles after a go-live.
You can prevent this behaviour by setting the login/no_automatic_user_sapstar profile parameter to 1.
Users can make requests for SAP systems themselves.