CVE-2017-11430 Multiple SAML libraries may allow authentication bypass via incorrect XML canonicalization and DOM traversal
Attackers can bypass SAML authentication by manipulating XML data without invalidating signatures, affecting Ruby applications using OmniAuth-SAML.
- Exploited in the wild
- Not known
- Login needed
- Any signed-in user
- Attackable
- Over the internet
- Victim action needed
- Not needed
- Fix
- Available
What is CVE-2017-11430?
CVE-2017-11430 is a high-severity authentication bypass vulnerability in OmniAuth OmnitAuth-SAML, published on 17 Apr 2019. Any signed-in user can exploit it over the network, with no action from the victim.
Official description
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.
Weakness: CWE-287
Which versions are affected by CVE-2017-11430?
2 open source packages ship an affected version, including omniauth-saml. It affects 1 product.
| Package | Affected | Fixed in |
|---|---|---|
omniauth-saml RubyGems | All versions | 1.10.0 |
omniauth-saml RubyGems | All versions | 1.10.0 |
Products include Omniauth Omniauth Saml.
How do I fix CVE-2017-11430?
Upgrade omniauth-saml to 1.10.0 or later.
Upgrade, and rotate credentials and sessions that may have been exposed. More about Authentication bypass.
Is CVE-2017-11430 being exploited?
There is no known exploitation of CVE-2017-11430 in the wild and no public exploit code.
Other vulnerabilities in OmniAuth OmnitAuth-SAML
Sources
Also known as GHSA-94hm-8q65-rmxm.