CVE-2017-5640: Apache Software Foundation Apache Impala…

CVE-2017-5640: It was noticed that a malicious process impersonating an Impala daemon in Apache Impala (incubating) 2.7.0...

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.

UnknownCVSS not scoredNot KEV-listedUpdatedSep 16, 2024, 22:50 UTC (UTC+00:00)

Security readout for executives and security teams

CVE-2017-5640 affects Apache Impala incubating versions 2.7.0 through 2.8.0. In Kerberos-enabled deployments without TLS, a malicious process pretending to be an Impala daemon could make authentication appear complete before credentials were exchanged, risking information disclosure. Exposure is likely limited to organizations running Apache Impala incubating 2.7.0 to 2.8.0 in Kerberos mode without TLS on daemon communications. The source bundle does not identify affected downstream distributions or later releases. Treat this as high priority for legacy Impala clusters handling sensitive data. The affected configuration can undermine authentication expectations and expose information, but urgency depends on whether those specific versions and Kerberos-without-TLS conditions exist. Mitigation focus: Identify any Apache Impala incubating 2.7.0 to 2.8.0 deployments.; Check Apache or distribution vendor guidance for fixed release direction.; Prioritize Kerberos-enabled clusters where TLS is not enabled..

Prepared: Jun 12, 2026, 22:05 UTC (UTC+00:00)

Generated from the cited source records. This long-tail analysis has not been individually reviewed by a named human.

Potential ATT&CK relevance

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Vulnerability profileCVE Program record

Severity: Unknown
CVSS: Not scored
Known Exploited: No
Published: Jul 10, 2017, 20:00 UTC (UTC+00:00)

Official CVE source material

CNA and ADP enrichment extracted from CVE v5

These fields come from the CVE record and ADP containers, not from Glexia's Take. They preserve time-varying source decisions such as CISA SSVC, KEV status, CVSS metrics, and provider references.

0CVSS vectors

0Timeline events

0ADP providers

2Source links

CVSS and timeline data

No CVSS vectors or timeline events were available in the normalized CVE source material.

Source materials

CVE List V5 sourceCVE List V5
[dev] 20170710 CVE-2017-5640 Apache Impala (incubating) Information DisclosureCVE reference · mailing-list, x_refsource_MLIST

Affected products

Products and packages named in the record

VendorProductVersion / packageStatus

Apache Software FoundationApache Impala2.7.0 to 2.8.0 incubatingListed

Weakness

CWE details

No CWE listed

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