CVE-2025-25293— ruby-saml vulnerable to Remote Denial of Service (DoS) with compressed SAML responses
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I. Basic Information for CVE-2025-25293
Vulnerability Information
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Vulnerability Title
ruby-saml vulnerable to Remote Denial of Service (DoS) with compressed SAML responses
Source: NVD (National Vulnerability Database)
Vulnerability Description
ruby-saml provides security assertion markup language (SAML) single sign-on (SSO) for Ruby. Prior to versions 1.12.4 and 1.18.0, ruby-saml is susceptible to remote Denial of Service (DoS) with compressed SAML responses. ruby-saml uses zlib to decompress SAML responses in case they're compressed. It is possible to bypass the message size check with a compressed assertion since the message size is checked before inflation and not after. This issue may lead to remote Denial of Service (DoS). Versions 1.12.4 and 1.18.0 fix the issue.
Source: NVD (National Vulnerability Database)
CVSS Information
N/A
Source: NVD (National Vulnerability Database)
Vulnerability Type
未加控制的资源消耗(资源穷尽)
Source: NVD (National Vulnerability Database)
Vulnerability Title
OneLogin ruby-saml 安全漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
Onelogin OneLogin ruby-saml是美国Onelogin公司的一款基于Ruby的、用于单点登录（SSO）服务的SAML（安全断言标记语言）库。 ruby-saml 1.12.4和1.18.0之前版本存在安全漏洞，该漏洞源于未正确处理压缩的SAML响应，可能导致拒绝服务。
Source: CNNVD (China National Vulnerability Database)
CVSS Information
N/A
Source: CNNVD (China National Vulnerability Database)
Vulnerability Type
N/A
Source: CNNVD (China National Vulnerability Database)
Affected Products
| Vendor | Product | Affected Versions | CPE | Subscribe |
|---|---|---|---|---|
| SAML-Toolkits | ruby-saml | < 1.12.4 | - |
II. Public POCs for CVE-2025-25293
| # | POC Description | Source Link | Shenlong Link |
|---|
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- https://github.com/SAML-Toolkits/ruby-saml/releases/tag/v1.12.4x_refsource_MISC
- https://github.com/SAML-Toolkits/ruby-saml/releases/tag/v1.18.0x_refsource_MISC
- https://nvd.nist.gov/vuln/detail/CVE-2025-25293
Same Patch Batch · SAML-Toolkits · 2025-03-12 · 3 CVEs total
| CVE-2025-25291 | ruby-saml vulnerable to SAML authentication bypass due to DOCTYPE handling (parser differe | |
| CVE-2025-25292 | Ruby SAML vulnerable to SAML authentication bypass due to namespace handling (parser diffe |
IV. Related Vulnerabilities
Same product: ruby-saml
- CVE-2025-66568
ruby-saml Libxml2 Canonicalization errors can bypass Digest/ - CVE-2025-66567
ruby-saml has a SAML authentication bypass due to namespace - CVE-2025-54572
Ruby SAML DOS vulnerability with large SAML response - CVE-2025-25292
Ruby SAML vulnerable to SAML authentication bypass due to na - CVE-2025-25291
ruby-saml vulnerable to SAML authentication bypass due to DO
Same vendor: SAML-Toolkits
- CVE-2025-66568
ruby-saml Libxml2 Canonicalization errors can bypass Digest/ - CVE-2025-66567
ruby-saml has a SAML authentication bypass due to namespace - CVE-2025-54572
Ruby SAML DOS vulnerability with large SAML response - CVE-2025-25292
Ruby SAML vulnerable to SAML authentication bypass due to na - CVE-2025-25291
ruby-saml vulnerable to SAML authentication bypass due to DO
Same weakness: CWE-400
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V. Comments for CVE-2025-25293
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