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CVE-2022-39300— Signature bypass via multiple root elements in node-SAML

Quick assessment

Affected
node-saml node-saml
Exploitation
No confirmed in-the-wild exploitation; assess based on exposure
Recommended action
Check the vendor advisory and references for a fixed version. If immediate upgrade is impossible, restrict exposure and increase monitoring.

node-saml是一个 SAML 库，不依赖于在 Node.js 中运行的任何框架。 node-saml 4.0.0-beta.5之前版本存在数据伪造问题漏洞，攻击者利用该漏洞可以使用 passport-saml 绕过网站上的 SAML 身份验证。

CVSS 7.7 · High EPSS 0.76% · P54

Possible ATT&CK Techniques 1 AI

T1190 · Exploit Public-Facing Application
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I. Basic Information for CVE-2022-39300

Vulnerability Information
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Vulnerability Title
Signature bypass via multiple root elements in node-SAML
Source: CVE Program / CVE List V5
Vulnerability Description
node SAML is a SAML 2.0 library based on the SAML implementation of passport-saml. A remote attacker may be able to bypass SAML authentication on a website using passport-saml. A successful attack requires that the attacker is in possession of an arbitrary IDP signed XML element. Depending on the IDP used, fully unauthenticated attacks (e.g without access to a valid user) might also be feasible if generation of a signed message can be triggered. Users should upgrade to node-saml version 4.0.0-beta5 or newer. Disabling SAML authentication may be done as a workaround.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:L
Source: CVE Program / CVE List V5
Vulnerability Type
密码学签名的验证不恰当
Source: CVE Program / CVE List V5
Vulnerability Title
node-saml 数据伪造问题漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
node-saml是一个 SAML 库，不依赖于在 Node.js 中运行的任何框架。 node-saml 4.0.0-beta.5之前版本存在数据伪造问题漏洞，攻击者利用该漏洞可以使用 passport-saml 绕过网站上的 SAML 身份验证。
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
node-saml node-saml < 4.0.0-beta.5 -

II. Public POCs for CVE-2022-39300

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III. Intelligence Information for CVE-2022-39300

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Patches & Fixes for CVE-2022-39300 (1)

Vendor Advisories for CVE-2022-39300 (1)

IV. Related Vulnerabilities

Same product: node-saml
Same vendor: node-saml
Same weakness: CWE-347

V. Comments for CVE-2022-39300

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