In Spring Security, versions 6.1.x prior to 6.1.7 and versions 6.2.x prior to 6.2.2, an application is vulnerable to broken access control when it directly uses the AuthenticationTrustResolver.isFullyAuthenticated(Authentication) method.

Specifically, an application is vulnerable if:

• The application uses AuthenticationTrustResolver.isFullyAuthenticated(Authentication) directly and a null authentication parameter is passed to it resulting in an erroneous true return value.

An application is not vulnerable if any of the following is true:

• The application does not use AuthenticationTrustResolver.isFullyAuthenticated(Authentication) directly.
• The application does not pass null to AuthenticationTrustResolver.isFullyAuthenticated
• The application only uses isFullyAuthenticated via Method Security https://docs.spring.io/spring-security/reference/servlet/authorization/method-security.html  or HTTP Request Security https://docs.spring.io/spring-security/reference/servlet/authorization/authorize-http-requests.html

References

• https://nvd.nist.gov/vuln/detail/CVE-2024-22234
• https://spring.io/security/cve-2024-22234
• spring-projects/spring-security@750cb30
• https://security.netapp.com/advisory/ntap-20240315-0003