9.8

CVE-2017-5640: apache software foundation apache impala Improper Authentication

CVSS: 9.8v3.0CriticalModified
Published 10-07-2017Last modified 16-09-2024
Open JSON

Vulnerability summary

CVE-2017-5640 is a critical (CVSS 9.8) Improper Authentication vulnerability in apache software foundation apache impala. EPSS estimates a 2.85% chance of exploitation in the next 30 days, higher than 86.5% of scored vulnerabilities.

Overall risk
70/100
0100
High · default modelHow is this calculated?
CVSS score
9.8/10
010
Critical · v3.0 (NVD)
EPSS score
2.85%
0%100%
Low · 0.00 pp in 30 days
KEVNot listedIn no KEV catalog
RansomwareNone recordedNo known use recorded
Public exploits0No public exploits recorded

Timeline

  1. 10-07-2017
    PublishedVulnerability first disclosed.
  2. 16-09-2024
    Last modifiedVulnerability information updated.

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 metrics

2 scores · 1 source · 2 versions

EPSS trend

Probability

2.85%

Chance of exploitation in the next 30 days

Percentile

87%

Versus all other CVEs

30-day change

0.00 pp

From 2.85% on 18-09-2026

18-09-202618-10-2026
EPSS score
2.85%

Known exploited

Compare KEV catalogs

Not in any of the 3 tracked catalogs.

Public exploits

0 found

No public exploits indexed.

Weaknesses

CWE · root cause

Affected systems

Apache1 product
Apache software foundation1 product

2 vendors · 2 products

References

2 links