Privilege Escalation Bug in Elastic X-Pack Security Versions 5.0.0 to 5.4.0

CVE-2017-8438 · MEDIUM Severity

AV:N/AC:L/AU:S/C:P/I:P/A:P

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.

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