CVE-2017-5640: Improper Authentication

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...