GHSA-9WRW-P9RM-R782 onelogin/php-saml Improper signature validation on LogoutRequest/LogoutResponse.

In order to verify Signatures on Logoutrequests and LogoutResponses we use the verifySignature of the class XMLSecurityKey from the xmlseclibs library. That method end up calling opensslverify depending on the signature algorithm used. The opensslverify function returns 1 when the signature was...