要点
- CVE-2025-25291 是影响 ruby-saml, omniauth saml (omniauth), ruby-saml (onelogin) 的严重 (CVSS 9.8)漏洞。
- 未来 30 天内被利用的概率（EPSS）：21.0%，高于 97.6% 的漏洞。
- 修复：升级到 1.18.0, 1.12.4, 2.1.3, 2.2.3 或更高版本。
| Package | Affected versions | Patched versions |
|---|
| ruby-saml RubyGems | ≥ 1.13.0, < 1.18.0< 1.12.4
| 1.18.01.12.4
|
| omniauth saml | ≥ 2.0.0, < 2.1.3≥ 2.2.0, < 2.2.3< 1.10.6
| 2.1.32.2.31.10.6
|
| ruby-saml | ≥ 1.13.0, < 1.18.0< 1.12.4
| 1.18.01.12.4
|
Description
Summary
An authentication bypass vulnerability was found in ruby-saml 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.
Impact
This issue may lead to authentication bypass.
NVD 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.
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