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.
problem types: CWE-362: Concurrent Execution using Shared Resource with Improper Synchronization ('Race Condition')
affected:
{
product: Elasticsearch
vendor: Elastic
versions:
status: affected, version: 6.4.0 to 6.4.2
}