Speaker: Ezequiel Gutesman, Director of Research (@gutes)
What is “in-memory” platform? Usually DBMS rely on disk to store their data but today they are solutions which store data in memory. Why? Memory is cheap today, there is an increase amount of data to process and performance is a key. Well-known solutions are Oracle, SQLserver and SAP HANA.
Ezequiel’s research focused on SAP HANA. The solution is based on many components (DB, HTTP server) and provide a nice attack surface. This is a blended architecture. Instead of an application using a DB connection with limited (or unrestricted) access, the application is the same as the database user. User privileges should be restricted at the DB level. This changes the impact of classic attacks:
- SQLi are restricted to the user privileges (better)
- XSS is more powerful (bad)
After the introduction, some attack vectors against HANA were reviewed. About SQL injections, HANA has a nice feature: history tables. If the user does not delete it, the information remains available! XSS attacks were reviewed as well as integration with the R-Server.