VDB
ANCHORE-2025-25292
ANCHORE-2025-25292
PUBLISHED
ruby-saml provides security assertion markup language (SAML) single sign-on (SSO) for Ruby. An authentication bypass vulnerability was found in ruby-saml prior to versions 1.12.4 and 1.18.0 due to a parser differential. ReXML and Nokogiri parse XML differently, the parsers can generate entirely different document structures from the same XML input. That allows an attacker to be able to execute a Signature Wrapping attack. This issue may lead to authentication bypass. Versions 1.12.4 and 1.18.0 contain a patch for the issue.
Affected Products
| Vendor | Product | Versions |
|---|---|---|
| GitLab | GitLab Enterprise | 17.8, 0, 0 |
| GitLab | GitLab | 17.9, 0, 17.8 |
| omniauth | omniauth-saml | 0, 2.0.0, 2.2.0 |
| SAML-Toolkits | ruby-saml | 0, 1.13.0, 1.13.0 |
Timeline
- Mar 12, 2025 CVE Published
- Mar 12, 2025 CVE Updated
References
- https://github.com/SAML-Toolkits/ruby-saml/security/advisories/GHSA-754f-8gm6-c4r2 url
- https://github.com/SAML-Toolkits/ruby-saml/commit/e9c1cdbd0f9afa467b585de279db0cbd0fb8ae97 fix
- https://github.com/SAML-Toolkits/ruby-saml/releases/tag/v1.12.4 fix
- https://about.gitlab.com/releases/2025/03/12/patch-release-gitlab-17-9-2-released url
- https://github.blog/security/sign-in-as-anyone-bypassing-saml-sso-authentication-with-parser-differentials url
- https://github.com/omniauth/omniauth-saml/security/advisories/GHSA-hw46-3hmr-x9xv url
- https://github.com/SAML-Toolkits/ruby-saml/releases/tag/v1.18.0 fix
- https://github.com/SAML-Toolkits/ruby-saml/commit/e76c5b36bac40aedbf1ba7ffaaf495be63328cd9 fix