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Change History

SimpleSAMLphp versions before 1.18.6 contain an information disclosure vulnerability. Prior to 2.4.7 and 2.5.2, SimpleSAMLphp's SAML SP ACS path does not enforce the IdP selected for an SP-initiated login when unsigned Response/InResponseTo is combined with a signed assertion lacking SubjectConfirmationData/InResponseTo, allowing a response issued by one trusted IdP to be bound to SP state created for another IdP and bypass flows that route users to a specific IdP, including deployments that set enable_unsolicited to false. This issue is fixed in versions 2.4.7 and 2.5.2.

AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:H/A:N

CWE-345

https://github.com/simplesamlphp/simplesamlphp/releases/tag/v2.4.7

https://github.com/simplesamlphp/simplesamlphp/releases/tag/v2.5.2

https://github.com/simplesamlphp/simplesamlphp/security/advisories/GHSA-q8r6-xj3f-wrrm

[{"vendor":"simplesamlphp","product":"simplesamlphp","versions":[{"version":"< 2.4.7","status":"affected"},{"version":">= 2.5.0-rc1, < 2.5.2","status":"affected"}]}]