SAML SP 2.0 Single Sign On (SSO) - SAML Service Provider - Moderately critical - Multiple vulnerabilities - SA-CONTRIB-2021-036

Project: SAML SP 2.0 Single Sign On (SSO) - SAML Service ProviderDate: 2021-September-22Security risk: Moderately critical 14∕25 AC:Basic/A:None/CI:Some/II:Some/E:Theoretical/TD:UncommonVulnerability: Multiple vulnerabilitiesDescription: This module provides a solution to authenticate visitors using existing SAML providers.
Certain non-default configurations allow a malicious user to login as any chosen user.
The vulnerability is mitigated by the module's default settings which require the options "Either sign SAML assertions" and "x509 certificate".Solution: Ensure that the "Either SAML response or SAML assertion must be signed" and "x509 certificate" options on the dedicated plugin page are both enabled.
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Path to article https://www.drupal.org/sa-contrib-2021-036