Vulnerability Report

CVE-2017-8438

Title: Elastic X-Pack Auth Bypass

Auth Bypass

Proof Of Concept

No public PoC currently indexed for CVE-2017-8438.

CWE Category CWE-269

Published Date Jun 05, 2017

Modified Date Jun 17, 2026

Exploit Status Not Found

Score 8.8 CVSS v3.0

Exploit Probability (EPSS)

1.03%

Vulnerability Summary

CVE-2017-8438: 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.

Impacted Vendors

elastic 1

elasticsearch 1

Reference Links

https://discuss.elastic.co/t/elastic-stack-5-4-1-and-5-3-3-security-updates/87952 https://www.elastic.co/blog/elasticsearch-5-4-1-and-5-3-3-released https://www.elastic.co/community/security https://discuss.elastic.co/t/elastic-stack-5-4-1-and-5-3-3-security-updates/87952 https://www.elastic.co/blog/elasticsearch-5-4-1-and-5-3-3-released https://www.elastic.co/community/security

CVSS v3.0

Source Entity [email protected]

Severity HIGH

8.8

Attack Vector

NETWORK

Complexity

LOW

Privileges

N/A

Interaction

NONE

Confidentiality

N/A

Integrity

N/A

Availability

N/A

Scope

UNCHANGED

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

CVSS v2.0

Source Entity [email protected]

Severity MEDIUM

6.5

Access Vector

N/A

Authentication

N/A

RAW VECTOR AV:N/AC:L/Au:S/C:P/I:P/A:P

Associated Attack Patterns (CAPEC)

Total: Patterns