CVE-2017-8438

HighCVSS 8.8/10Last modified Jun 17, 2026

Description

Elastic X-Pack Security versions 5.0.0 to 5.4.0 contain a privilege escalation bug in the run_as functionality. This bug prevents transitioning into the specified user specified in a run_as request. If a role has been created using a template that contains the _user properties, the behavior of run_as will be incorrect. Additionally if the run_as user specified does not exist, the transition will not happen.

Metrics

CVSS 3.0 8.8/10CVSS:3.0/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

Weakness enumeration

CWE-284 CWE-269

Affected software

Vendor	Product	Versions
Elastic	X-Pack Security	5.0.0 to 5.4.0

References

https://discuss.elastic.co/t/elastic-stack-5-4-1-and-5-3-3-security-updates/87952Vendor Advisory
https://www.elastic.co/blog/elasticsearch-5-4-1-and-5-3-3-releasedPatch, Vendor Advisory
https://www.elastic.co/community/securityVendor Advisory
https://discuss.elastic.co/t/elastic-stack-5-4-1-and-5-3-3-security-updates/87952Vendor Advisory
https://www.elastic.co/blog/elasticsearch-5-4-1-and-5-3-3-releasedPatch, Vendor Advisory
https://www.elastic.co/community/securityVendor Advisory

Timeline

Published: Jun 5, 2017
Last modified: Jun 17, 2026
NVD status: Modified

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