An issue was discovered in OpenStack Keystone before 15.0.1, and 16.0.0. Any user authenticated within a limited scope (trust/oauth/application credential) can create an EC2 credential with an escalated permission, such as obtaining admin while the user is on a limited viewer role. This potentially allows a malicious user to act as the admin on a project another user has the admin role on, which can effectively grant that user global admin privileges.
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{ "availability": "No subscription required", "ubuntu_priority": "medium", "binaries": [ { "binary_version": "2:17.0.0-0ubuntu0.20.04.1", "binary_name": "keystone" }, { "binary_version": "2:17.0.0-0ubuntu0.20.04.1", "binary_name": "keystone-common" }, { "binary_version": "2:17.0.0-0ubuntu0.20.04.1", "binary_name": "keystone-doc" }, { "binary_version": "2:17.0.0-0ubuntu0.20.04.1", "binary_name": "python3-keystone" } ] }