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CVE-2024-32962— XML signature verification bypass due improper verification of signature / signature spoofing

Quick assessment

Affected
node-saml xml-crypto
Exploitation
Public or AI PoC available; prioritize validation
Recommended action
Check the vendor advisory and references for a fixed version. If immediate upgrade is impossible, restrict exposure and increase monitoring.

NPM xml-crypto是NPM公司的一个数字签名和加密库。 xml-crypto 4.0.0 到 6.0.0版本存在安全漏洞，该漏洞源于默认配置不检查签名者的授权，允许攻击者绕过 XML 签名验证。

CVSS 10.0 · Critical EPSS 0.83% · P57

Possible ATT&CK Techniques 1 AI

T1190 · Exploit Public-Facing Application
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I. Basic Information for CVE-2024-32962

Vulnerability Information
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Vulnerability Title
XML signature verification bypass due improper verification of signature / signature spoofing
Source: CVE Program / CVE List V5
Vulnerability Description
xml-crypto is an xml digital signature and encryption library for Node.js. In affected versions the default configuration does not check authorization of the signer, it only checks the validity of the signature per section 3.2.2 of the w3 xmldsig-core-20080610 spec. As such, without additional validation steps, the default configuration allows a malicious actor to re-sign an XML document, place the certificate in a `<KeyInfo />` element, and pass `xml-crypto` default validation checks. As a result `xml-crypto` trusts by default any certificate provided via digitally signed XML document's `<KeyInfo />`. `xml-crypto` prefers to use any certificate provided via digitally signed XML document's `<KeyInfo />` even if library was configured to use specific certificate (`publicCert`) for signature verification purposes. An attacker can spoof signature verification by modifying XML document and replacing existing signature with signature generated with malicious private key (created by attacker) and by attaching that private key's certificate to `<KeyInfo />` element. This vulnerability is combination of changes introduced to `4.0.0` on pull request 301 / commit `c2b83f98` and has been addressed in version 6.0.0 with pull request 445 / commit `21201723d`. Users are advised to upgrade. Users unable to upgrade may either check the certificate extracted via `getCertFromKeyInfo` against trusted certificates before accepting the results of the validation or set `xml-crypto's getCertFromKeyInfo` to `() => undefined` forcing `xml-crypto` to use an explicitly configured `publicCert` or `privateKey` for signature verification.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:N
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
xml-crypto 安全漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
NPM xml-crypto是NPM公司的一个数字签名和加密库。 xml-crypto 4.0.0 到 6.0.0版本存在安全漏洞，该漏洞源于默认配置不检查签名者的授权，允许攻击者绕过 XML 签名验证。
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)

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Affected Products

Vendor Product Affected Versions CPE Subscribe
node-saml xml-crypto >= 4.0.0, < 6.0.0 -

II. Public POCs for CVE-2024-32962

# POC Description Source Link Shenlong Link
1 None https://github.com/absholi7ly/Poc-CVE-2024-32962-xml-crypto POC Details
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Qwen3.6-35B-A3B · 9959 chars
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III. Intelligence Information for CVE-2024-32962

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Patches & Fixes for CVE-2024-32962 (3)

Vendor Advisories for CVE-2024-32962 (2)

Vendor Pages for CVE-2024-32962 (1)

IV. Related Vulnerabilities

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

V. Comments for CVE-2024-32962

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