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.
Description: CWE-347: Improper Verification of Cryptographic Signature
Metrics
Version
Base score
Base severity
Vector
3.1
3.7
LOW
CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:L/I:N/A:N
Version:3.1
Base score:3.7
Base severity: LOW
Vector:
CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:L/I:N/A:N
Metrics Other Info
Impacts
CAPEC ID
Description
N/A
An attacker can craft SAML Responses, LogoutRequests, or LogoutResponses without a valid signature and use the Service Provider as a decryption oracle.
CAPEC ID: N/A
Description: An attacker can craft SAML Responses, LogoutRequests, or LogoutResponses without a valid signature and use the Service Provider as a decryption oracle.