Security Advisory
CVE-2017-5640
CVE vulnerability detail — eXtreme Datacenter Security Operations
Description
It was noticed that a malicious process impersonating an Impala daemon in Apache Impala (incubating) 2.7.0 to 2.8.0 could cause Impala daemons to skip authentication checks when Kerberos is enabled (but TLS is not). If the malicious server responds with COMPLETE before the SASL handshake has completed, the client will consider the handshake as completed even though no exchange of credentials has happened.