CVE-2018-7644

CVE-2018-7644 affects SimpleSAMLphp prior to 1.15.3 where XmlSecLibs used by the saml2 library incorrectly verifies SAML assertions, enabling a remote attacker to craft an assertion from an Identity Provider that passes cryptographic checks and impersonate a user from that IdP. The issue is a key...

CVE-2018-7644

The XmlSecLibs library as used in the saml2 library in SimpleSAMLphp before 1.15.3 incorrectly verifies signatures on SAML assertions, allowing a remote attacker to construct a crafted SAML assertion on behalf of an Identity Provider that would pass as cryptographically valid, thereby allowing th...

An error during signature verification can be treated as a successful verification.

…nse. 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...