{"cve":"CVE-2017-5640","nvd":{"published":"2017-07-10T20:29:00.237","modified":"2026-06-17T01:20:54.380","status":"Modified","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.","cvss_v4":null,"cvss_v3":{"version":"3.0","vector":"CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H","score":9.8},"cwes":["CWE-287"],"references":["http://www.securityfocus.com/bid/99508","https://lists.apache.org/thread.html/c02e83aa46c90b7cbc87dd649cf8f9b73e11053eddea9144a397da53%40%3Cdev.impala.apache.org%3E","http://www.securityfocus.com/bid/99508","https://lists.apache.org/thread.html/c02e83aa46c90b7cbc87dd649cf8f9b73e11053eddea9144a397da53%40%3Cdev.impala.apache.org%3E"],"products":["apache:impala"],"source":"nvd","synced_at":"2026-10-19T20:43:44.556243339+00:00"},"epss":{"cve":"CVE-2017-5640","score":0.02852,"percentile":0.8672,"date":"2026-11-01"},"kev":null,"osv":[],"attribution":["This product uses the NVD API but is not endorsed or certified by the NVD.","EPSS scores: FIRST Exploit Prediction Scoring System, https://www.first.org/epss","Known exploited vulnerabilities: CISA Known Exploited Vulnerabilities Catalog, https://www.cisa.gov/known-exploited-vulnerabilities-catalog","Package advisories: OSV (https://osv.dev), from the GitHub Advisory Database, PyPA, Go, RustSec and other ecosystem databases, under CC-BY 4.0 or CC0","CVE records: the CVE Program's CVE List (https://www.cve.org), under its terms of use (https://www.cve.org/Legal/TermsOfUse). CVE is a registered trademark of The MITRE Corporation; this product is not affiliated with the CVE Program."]}