GHSA-ww38-37g9-m3q3 Spring Security SAML2 Service Provider: Decryption Oracle Vulnerability from Unsigned SAML Response and Logout Payloads

• Maven org.springframework.security:spring-security-saml2-service-provider: >= 7.0.0, < 7.0.6 → fixed in 7.0.6 • Maven org.springframework.security:spring-security-saml2-service-provider: >= 6.5.0, < 6.5.11 → fixed in 6.5.11 • Maven org.springframework.security:spring-security-saml2-service-provider: >= 6.4.0, <= 6.4.16 (no fix yet) • Maven org.springframework.security:spring-security-saml2-service-provider: >= 6.3.0, <= 6.3.16 (no fix yet) • Maven org.springframework.security:spring-security-saml2-service-provider: >= 5.8.0, <= 5.8.25 (no fix yet) • Maven org.springframework.security:spring-security-saml2-service-provider: <= 5.7.23 (no fix yet)

Since Spring Security SAML decrypts SAML Responses as well as elements of SAML LogoutRequests and LogoutResponses without requiring a valid signature, attackers may be able to craft these SAML payloads and use the Service Provider as a decryption oracle. Affected versions: Spring Security 5.7.0 through 5.7.23; 5.8.0 through 5.8.25; 6.3.0 through 6.3.16; 6.4.0 through 6.4.16; 6.5.0 through 6.5.10; 7.0.0 through 7.0.5.