CVE-2018-17244

Name: CVE-2018-17244
Creator: NVD / NIST
Published: 2018-12-20T22:29:00.24+00:00
License: https://creativecommons.org/publicdomain/zero/1.0/

UnknownEPSS 1.46%

Last modified Jun 17, 2026

CVE-2018-17244 is a vulnerability of currently unknown severity. Elasticsearch Security versions 6.4.0 to 6.4.2 contain an error in the way request headers are applied to requests when using the Active Directory, LDAP, Native, or File realms. A request may receive headers intended for another request if the same username is being authenticated concurrently; when used with run as, this can result in the request running as the incorrect user. EPSS estimates a 1.46% chance of exploitation in the next 30 days.

Description

Elasticsearch Security versions 6.4.0 to 6.4.2 contain an error in the way request headers are applied to requests when using the Active Directory, LDAP, Native, or File realms. A request may receive headers intended for another request if the same username is being authenticated concurrently; when used with run as, this can result in the request running as the incorrect user. This could allow a user to access information that they should not have access to.

Metrics

EPSS Probability

1.46%

70.2th percentile

Probability of exploitation in the next 30 days. Learn more

Weakness Enumeration

Affected Software

Vendor	Product	Versions
Elastic	Elasticsearch	>= 6.4.0, <= 6.4.2

References

http://www.securityfocus.com/bid/106318Third Party Advisory, VDB Entry
https://discuss.elastic.co/t/elastic-stack-6-4-3-and-5-6-13-security-update/155594Vendor Advisory
https://www.elastic.co/community/securityVendor Advisory
http://www.securityfocus.com/bid/106318Third Party Advisory, VDB Entry
https://discuss.elastic.co/t/elastic-stack-6-4-3-and-5-6-13-security-update/155594Vendor Advisory
https://www.elastic.co/community/securityVendor Advisory

Timeline

Published: Dec 20, 2018
Last Modified: Jun 17, 2026
Status: Modified

Frequently Asked Questions

What is CVE-2018-17244?

How severe is CVE-2018-17244?

Severity scoring for CVE-2018-17244 is pending analysis. The EPSS model estimates a 1.46% probability of exploitation in the next 30 days.

How do I fix CVE-2018-17244?

Check the vendor references and advisories linked above for patched versions and mitigation guidance. You can also run a Strix scan to test if your systems are affected.

Are you affected by CVE-2018-17244?

Run a free Strix scan to check your systems for this vulnerability.

Scan your code now

Source: NVD / NIST