system
Describe <CVE-2017-9797>.
user
What is <CVE-2017-9797>?
assistant
When an Apache Geode cluster before v1.2.1 is operating in secure mode, an unauthenticated client can enter multi-user authentication mode and send metadata messages. These metadata operations could leak information about application data types. In addition, an attacker could perform a denial of service attack on the cluster..