Elastic X-Pack Security versions 5.0.0 to 5.4.0 contain a privilege escalation bug in the run_as functionality.

Published 9 y ago 2017-06-05 · modified 4 mo ago 2026-06-17 · JSON

CVSS

8.8

v3.0 · NVD

CISA KEV

not known exploited

EPSS

1.0%

percentile 64%

Public exploits

none known

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.

Exploit prediction (EPSS)

1.03% probability of exploitation in the next 30 days, higher than 64% of all scored CVEs.

CVSS scores

Assigned by	Version	Score	Vector
NVD	3.0	8.8	`CVSS:3.0/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H`
NVD	2.0	6.5	`AV:N/AC:L/Au:S/C:P/I:P/A:P`

Affected products

Elastic X-Pack Security

Classification

Weakness

CWE-284 Improper Access Control
CWE-269 Improper Privilege Management

References

discuss.elastic.co /t/elastic-stack-5-4-1-and-5-3-3-security-updates/87952 · x_refsource_CONFIRM, x_transferred
elastic.co /blog/elasticsearch-5-4-1-and-5-3-3-released · x_refsource_CONFIRM, x_transferred
elastic.co /community/security · x_refsource_CONFIRM, x_transferred

Sources

CVE List: CVE-2017-8438
NVD: CVE-2017-8438

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