An issue was discovered in OpenStack Keystone before 29.0.2. The Keystone RBAC policy enforcer in enforce_call unconditionally merges the raw JSON request body into the policy enforcement dictionary via policy_dict.update(json_input.copy()), overwriting trusted target data that was previously set from database lookups. Because flask.request.get_json is called with force=True, this works regardless of Content-Type or HTTP method. Any authenticated user can inject arbitrary policy target attributes (e.g., user_id, project_id) into the request body to bypass RBAC checks and perform unauthorized operations on resources belonging to other users or projects. This was introduced in commit 5ea59f52 (Rocky/14.0.0).
| Vendor | Product | Version(s) | CPE |
|---|---|---|---|
>= 14.0.0, < 27.0.2CPE matchmatch criteria | cpe:2.3:a:openstack:keystone:*:*:*:*:*:*:*:* | ||
>= 28.0.0, < 28.0.2CPE matchmatch criteria | cpe:2.3:a:openstack:keystone:*:*:*:*:*:*:*:* | ||
>= 29.0.0, < 29.0.2CPE matchmatch criteria | cpe:2.3:a:openstack:keystone:*:*:*:*:*:*:*:* |
CVSS version used by this source: 3.1
CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:C/C:L/I:L/A:L
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The average CVE in this peer group has 0.1 InfoSec Media, 0.0 Vendor Blog, and 0.0 Security Researcher mentions.