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SNOTE Note Assistant (SAP Notes)
The basis of every SAP system is the SAP NetWeaver Application Server. Everything depends on this "SAP Basis" to keep SAP systems running. In the area of SAP Basis Operations, we handle all technical tasks for our customers that arise during the installation, operation and maintenance of SAP systems. We install, administer, configure, troubleshoot and optimize your SAP system.
SAP Basis Operation manages the IT underlying the SAP system. In addition, the operation ensures the maintenance and availability of business processes. Various tools can be used for this purpose, which take over the maintenance, care, configuration and monitoring of the SAP system. Basic operation is the prerequisite for ensuring that the SAP system is fully operational and covers the business processes well.
SE16 / SE16N / SE16H Data Browser
User authentication is usually performed by entering a user name and password. This information is called user credentials and should only be known to the user, so that no third party can gain access to the system under a false identity. This post explains how a user's password protection can be circumvented and how to prevent it. SAP system legacy data The login data of a user, including password, are saved in the USR02 database table. However, the password is not in plain text, but encrypted as a hash value. For each user there are not only one but up to three generated password hashes. Different algorithms are used to calculate these values, but only the Salted SHA1 can be considered sufficiently safe. Table deduction USR02 The secure password hash is located in the fifth column of the pictured table deduction with the heading Password hash value. The corresponding data field in the column is called PWDSALTEDHASH. Weak Password Hash Risks You have a good and working permission concept that ensures that no processes or data can be manipulated or stolen. A potential attacker now has the ability to read out your database with the password hashes. The hash values are calculated using password crackers, which are available on the Internet at home, and the attacker now has a long list of user credentials. To damage your system, the user will now search for the appropriate permissions and perform the attack under a false identity. Identifying the actual attacker is virtually impossible. Check if your system is vulnerable too Your system generates the weak hash values if the login/password_downwards_compatibility profile parameter has an unequal value of 0.
By using a code scanner, it is now possible for every developer to scan for complex security patterns during the extended check of his program, which tell him whether he has built vulnerabilities into his program. These vulnerabilities are detected and can now be addressed in a workflow-driven process. Currently, there are two products that can support customers in the area of scanning their own SAP programs.
"Shortcut for SAP Systems" simplifies tasks in the area of the SAP basis and complements missing functions of the standard.
Some useful tips about SAP basis can be found on www.sap-corner.de.
The user context is stored in this memory area.
If you want to make sure that you are working in the correct directory, you can look in the transaction AL11 to see which directory is specified under "DIR_TRANS".