CVEvulnerability
CVE-2025-25291
9.3 CRITICAL
Official page ↗
- Status
- Modified
- Published
- 2025-03-12
- Last modified
- 2026-06-17
- Assigner
- [email protected]
- CVSS 4.0 ([email protected])
- 9.3 CRITICAL — CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:N/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X
- CVSS 3.1 ([email protected])
- 9.8 CRITICAL — CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
- Weaknesses
- CWE-347, CWE-436
Description
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 fix the issue.
Affected configurations
• omniauth omniauth saml (< 1.10.6)
• omniauth omniauth saml (>= 2.0.0 < 2.1.3)
• omniauth omniauth saml (>= 2.2.0 < 2.2.3)
• onelogin ruby-saml (< 1.12.4)
• onelogin ruby-saml (>= 1.13.0 < 1.18.0)
• netapp storagegrid
Related
References
- https://about.gitlab.com/releases/2025/03/12/patch-release-gitlab-17-9-2-released Patch
- https://github.blog/security/sign-in-as-anyone-bypassing-saml-sso-authentication-with-parser-differentials Exploit, Third Party Advisory
- https://github.com/SAML-Toolkits/ruby-saml/commit/e76c5b36bac40aedbf1ba7ffaaf495be63328cd9 Patch
- https://github.com/SAML-Toolkits/ruby-saml/commit/e9c1cdbd0f9afa467b585de279db0cbd0fb8ae97 Patch
- https://github.com/SAML-Toolkits/ruby-saml/releases/tag/v1.12.4 Release Notes
- https://github.com/SAML-Toolkits/ruby-saml/releases/tag/v1.18.0 Release Notes
- https://github.com/SAML-Toolkits/ruby-saml/security/advisories/GHSA-4vc4-m8qh-g8jm Vendor Advisory
- https://github.com/omniauth/omniauth-saml/security/advisories/GHSA-hw46-3hmr-x9xv Vendor Advisory
- https://portswigger.net/research/saml-roulette-the-hacker-always-wins Exploit, Third Party Advisory
- https://securitylab.github.com/advisories/GHSL-2024-329_GHSL-2024-330_ruby-saml Third Party Advisory
- https://lists.debian.org/debian-lts-announce/2025/04/msg00011.html lists.debian.org
- https://news.ycombinator.com/item?id=43374519 Issue Tracking
- https://security.netapp.com/advisory/ntap-20250314-0010/ Third Party Advisory