Versions of samlify
prior to 2.4.0-rc5 are vulnerable to Authentication Bypass. The package fails to prevent XML Signature Wrapping, allowing tokens to be reused with different usernames. A remote attacker can modify SAML content for a SAML service provider without invalidating the cryptographic signature, which may allow attackers to bypass primary authentication for the affected SAML service provider.
Upgrade to version 2.4.0-rc5 or later
github.com/tngan/samlify
github.com/tngan/samlify/commit/d382bbc7c6b8ea889839ae1f178730c25b09eb42
github.com/tngan/samlify/compare/v2.4.0-rc4...v2.4.0-rc5
github.com/tngan/samlify/releases/tag/v2.4.0-rc5
hackerone.com/reports/356284
nvd.nist.gov/vuln/detail/CVE-2017-1000452
www.whitehats.nl/blog/xml-signature-wrapping-samlify