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OpenStack Keystone before 29.0.3 improperly permits tokens obtained through delegated authentication mechanisms—including OAuth1 access tokens, application credentials, and trusts—to be reauthenticated through the token-method authentication path. In the application-credential case, presenting a token without an explicit scope can cause Keystone to issue a replacement token scoped to the credential owner's default project rather than the project for which the application credential was issued. This breaks intended project-scope restrictions on delegated credentials.
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An authentication-scope bypass in OpenStack Keystone before 29.0.3. Delegated-authentication tokens could be reauthenticated through the token-method path to obtain a token outside their intended project scope; notably, an unscoped application-credential token could yield a token for the credential owner's default project rather than its issued project.
A network-accessible vulnerability affecting Debian Linux versions 11.0, 12.0, 13.0, and 14.0, with high confidentiality and integrity impact according to the supplied CVSS v3 vector.
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Cross-references every affected SKU, including bundled OEM variants.
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