Apache Flume prior to 1.11.0 has an Improper Input Validation (JNDI Injection) in JMSSource

Apache Flume versions 1.4.0 through 1.10.1 are vulnerable to a remote code execution (RCE) attack when a configuration uses a JMS Source with an unsafe providerURL. This issue is fixed by limiting JNDI to allow only the use of the java protocol or no protocol.