Multiple SAML libraries may allow authentication bypass via incorrect XML canonicalization and DOM traversal
CVE-2017-11430

9.8CRITICAL

Key Information:

Vendor

Omniauth

Status
Omnitauth-saml
Vendor
CVE Published:
17 April 2019

What is CVE-2017-11430?

OmniAuth OmnitAuth-SAML 1.9.0 and earlier may incorrectly utilize the results of XML DOM traversal and canonicalization APIs in such a way that an attacker may be able to manipulate the SAML data without invalidating the cryptographic signature, allowing the attack to potentially bypass authentication to SAML service providers.

Affected Version(s)

OmnitAuth-SAML < 1.9.0

References

https://duo.com/blog/duo-finds-saml-vulnerabilities-affec...
x_refsource_MISC
https://www.kb.cert.org/vuls/id/475445
x_refsource_MISC

CVSS V3.1

Score:
9.8
Severity:
CRITICAL
Confidentiality:
High
Integrity:
High
Availability:
High
Attack Vector:
Network
Attack Complexity:
Low
Privileges Required:
None
User Interaction:
None
Scope:
Unchanged

CVSS V3.0

Score:
7.7
Severity:
HIGH
Confidentiality:
High
Integrity:
None
Availability:
High
Attack Vector:
Network
Attack Complexity:
Low
Privileges Required:
Low
User Interaction:
None
Scope:
Changed

Timeline

  • Vulnerability published

  • Vulnerability Reserved

Credit

Kelby Ludwig of Duo Security
.