Abstract
With the wide adoption of Internet, security of web database is a key issue. In web-based applications, due to the use of n-tier architecture, the database server has no knowledge of the web application user and hence all authorization decisions are based upon execution of specific web application. Application server has full access privileges to delegate to the end user based upon the user requirement. The identity of the end user is hidden , subsequently database server fails to assign proper authorizations to the end user. Hence, current approaches to access control on databases do not fit for web databases because they are mostly based on individual user identities. To fill this security gap, the definition of application aware access control system is needed. In this paper, RBAC+ Model, an extension of NIST RBAC provides a application aware access control system to prevent attacks with the notion of application, application profile and sub-application session.
Highlights
Web applications are extremely popular today, due to the simplicity of web brower and convenience of using web brower as a end user
The central idea of Role-Based Access Control (RBAC)+ is including the concepts of application, application profile and sub-application session when controlling the access to web databases
The application profile is necessary to track the user behavior throughout a whole session and mainly to prevent business logic violation attacks by enforcing access control.RBAC+ focuses on detection and prevention of malicious transactions by continuously monitoring the sequence of SQL statements issued by users
Summary
Web applications are extremely popular today, due to the simplicity of web brower and convenience of using web brower as a end user. It is impossible to authorized web application users with proper privileges at database level Attackers can exploit these flaws to view sensitive data. The application profile is necessary to track the user behavior throughout a whole session and mainly to prevent business logic violation attacks by enforcing access control.RBAC+ focuses on detection and prevention of malicious transactions by continuously monitoring the sequence of SQL statements issued by users. It monitors the malicious transactions and if identified cancels the transactions before it succeeds minimize the damage [1]
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