Apache NiFi H2 Connection String Remote Code Execution

Posted on 30 August 2023

The DBCPConnectionPool and HikariCPConnectionPool Controller Services in Apache NiFi 0.0.2 through 1.21.0 allow an authenticated and authorized user to configure a Database URL with the H2 driver that enables custom code execution. This exploit will result in several shells (5-7). Successfully tested against Apache nifi 1.17.0 through 1.21.0.