An issue was discovered in OpenStack Keystone before 15.0.1, and 16.0.0. Any authenticated user can create an EC2 credential for themselves for a project that they have a specified role on, and then perform an update to the credential user and project, allowing them to masquerade as another user. 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.
{
"github_reviewed_at": "2024-04-29T10:24:16Z",
"severity": "HIGH",
"github_reviewed": true,
"cwe_ids": [
"CWE-311",
"CWE-863"
],
"nvd_published_at": "2020-05-07T00:15:00Z"
}