CVE-2025-54572— Ruby SAML DOS vulnerability with large SAML response
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I. Basic Information for CVE-2025-54572
Vulnerability Information
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Vulnerability Title
Ruby SAML DOS vulnerability with large SAML response
Source: NVD (National Vulnerability Database)
Vulnerability Description
The Ruby SAML library is for implementing the client side of a SAML authorization. In versions 1.18.0 and below, a denial-of-service vulnerability exists in ruby-saml even with the message_max_bytesize setting configured. The vulnerability occurs because the SAML response is validated for Base64 format prior to checking the message size, leading to potential resource exhaustion. This is fixed in version 1.18.1.
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
Ruby SAML 安全漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
Ruby SAML是SAML-Toolkits开源的一个 SAML 授权客户端的实现。 Ruby SAML 1.18.0及之前版本存在安全漏洞，该漏洞源于在检查消息大小前验证SAML响应的Base64格式，可能导致资源耗尽。
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 | < 1.18.1 | - |
II. Public POCs for CVE-2025-54572
| # | POC Description | Source Link | Shenlong Link |
|---|
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IV. Related Vulnerabilities
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Same vendor: SAML-Toolkits
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ruby-saml vulnerable to SAML authentication bypass due to DO - CVE-2025-25293
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Same weakness: CWE-400
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V. Comments for CVE-2025-54572
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