cve/2021/CVE-2021-39171.md

CVE-2021-39171

Description

Passport-SAML is a SAML 2.0 authentication provider for Passport, the Node.js authentication library. Prior to version 3.1.0, a malicious SAML payload can require transforms that consume significant system resources to process, thereby resulting in reduced or denied service. This would be an effective way to perform a denial-of-service attack. This has been resolved in version 3.1.0. The resolution is to limit the number of allowable transforms to 2.

POC

Reference

• https://github.com/node-saml/passport-saml/pull/595

Github

• https://github.com/seal-community/cli