Auth bypass in Apache Impala
CVE-2017-5640
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.
Vulnerability class: Broken Authentication
EPSS: 0.029 (85.3th percentile) — read the EPSS interpretation.
CVSS v3 metric
CVSS v3 base score 9.8 (Critical). Vector: CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H.
Affected products
- Apache Impala — versions 2.7.0, 2.8.0
- Apache Software Foundation Impala — versions 2.7.0 to 2.8.0 incubating
Weakness classification (CWE)
References
- security@apache.org (mailing-list, x_refsource_MLIST)
- security@apache.org (VDB Entry, Third Party Advisory, vdb-entry, x_refsource_BID)
Frequently asked questions
- What is CVE-2017-5640?
- CVE-2017-5640 is a critical-severity vulnerability in Apache Impala, classified under Improper Authentication. CVSS score: 9.8/10. Published 2017-07-10.
- How severe is CVE-2017-5640?
- Critical severity. CVSS v3 base score is 9.8 out of 10.