GMS-2021-104: Signature Validation Bypass

May 24, 2021 (updated October 8, 2021)

An authentication bypass exists in the goxmldsig this library uses to determine if SAML assertions are genuine. An attacker could craft a SAML response that would appear to be valid but would not have been genuinely issued by the IDP.

References

github.com/advisories/GHSA-rrfw-hg9m-j47h
github.com/crewjam/saml/security/advisories/GHSA-rrfw-hg9m-j47h

Detect and mitigate GMS-2021-104 with GitLab Dependency Scanning

Secure your software supply chain by verifying that all open source dependencies used in your projects contain no disclosed vulnerabilities. Learn more about Dependency Scanning →