CVE-2025-29774: Xml crypto Xml-crypto Vulnerable To XML Signature Vulnerability

{
  "schema_version" : "1.4.0",
  "id" : "GHSA-9p8x-f768-wp2g",
  "modified" : "2025-03-16T21:34:47Z",
  "published" : "2025-03-14T17:14:23Z",
  "aliases" : [ "CVE-2025-29774" ],
  "summary" : "xml-crypto Vulnerable to XML Signature Verification Bypass via Multiple SignedInfo References",
  "details" : "# Impact\nAn attacker may be able to exploit this vulnerability to bypass authentication or authorization mechanisms in systems that rely on xml-crypto for verifying signed XML documents. The vulnerability allows an attacker to modify a valid signed XML message in a way that still passes signature verification checks. For example, it could be used to alter critical identity or access control attributes, enabling an attacker with a valid account to escalate privileges or impersonate another user.\n\n# Patches\nAll versions <= 6.0.0 are affected. Please upgrade to version 6.0.1.\n\nIf you are still using v2.x or v3.x please upgrade to the associated patch version.\n\n# Indicators of Compromise\n\nWhen logging XML payloads, check for the following indicators. If the payload includes encrypted elements, ensure you analyze the decrypted version for a complete assessment. (If encryption is not used, analyze the original XML document directly). This applies to various XML-based authentication and authorization flows, such as SAML Response payloads.\n\n### Multiple SignedInfo Nodes\nThere should not be more than one SignedInfo node inside a Signature. If you find multiple SignedInfo nodes, it could indicate an attack.\n\n```xml\n<Signature>\n    <SomeNode>\n      <SignedInfo>\n        <Reference URI=\"somefakereference\">\n          <DigestValue>forgeddigestvalue</DigestValue>\n        </Reference>\n      </SignedInfo>\n    </SomeNode>\n    <SignedInfo>\n        <Reference URI=\"realsignedreference\">\n          <DigestValue>realdigestvalue</DigestValue>\n        </Reference>\n      </SignedInfo>\n    </SignedInfo>\n</Signature>\n```\n\n### Code to test\n\nPass in the decrypted version of the document\n```js\ndecryptedDocument = ... // yours to implement\n\n// This check is per-Signature node, not per-document\nconst signedInfoNodes = xpath.select(\".//*[local-name(.)='SignedInfo']\", signatureNode);\n\nif (signedInfoNodes.length === 0) {\n  // Not necessarily a compromise, but invalid. Should contain exactly one SignedInfo node\n  // Yours to implement\n}\n\nif (signedInfoNodes.length > 1) {\n  // Compromise detected, yours to implement\n}\n```",
  "severity" : [ {
    "type" : "CVSS_V4",
    "score" : "CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N"
  } ],
  "affected" : [ {
    "package" : {
      "ecosystem" : "npm",
      "name" : "xml-crypto"
    },
    "ranges" : [ {
      "type" : "ECOSYSTEM",
      "events" : [ {
        "introduced" : "4.0.0"
      }, {
        "fixed" : "6.0.1"
      } ]
    } ]
  }, {
    "package" : {
      "ecosystem" : "npm",
      "name" : "xml-crypto"
    },
    "ranges" : [ {
      "type" : "ECOSYSTEM",
      "events" : [ {
        "introduced" : "3.0.0"
      }, {
        "fixed" : "3.2.1"
      } ]
    } ]
  }, {
    "package" : {
      "ecosystem" : "npm",
      "name" : "xml-crypto"
    },
    "ranges" : [ {
      "type" : "ECOSYSTEM",
      "events" : [ {
        "introduced" : "0"
      }, {
        "fixed" : "2.1.6"
      } ]
    } ]
  } ],
  "references" : [ {
    "type" : "WEB",
    "url" : "https://github.com/node-saml/xml-crypto/security/advisories/GHSA-9p8x-f768-wp2g"
  }, {
    "type" : "ADVISORY",
    "url" : "https://nvd.nist.gov/vuln/detail/CVE-2025-29774"
  }, {
    "type" : "WEB",
    "url" : "https://github.com/node-saml/xml-crypto/commit/28f92218ecbb8dcbd238afa4efbbd50302aa9aed"
  }, {
    "type" : "WEB",
    "url" : "https://github.com/node-saml/xml-crypto/commit/886dc63a8b4bb5ae1db9f41c7854b171eb83aa98"
  }, {
    "type" : "WEB",
    "url" : "https://github.com/node-saml/xml-crypto/commit/8ac6118ee7978b46aa56b82cbcaa5fca58c93a07"
  }, {
    "type" : "PACKAGE",
    "url" : "https://github.com/node-saml/xml-crypto"
  }, {
    "type" : "WEB",
    "url" : "https://github.com/node-saml/xml-crypto/releases/tag/v2.1.6"
  }, {
    "type" : "WEB",
    "url" : "https://github.com/node-saml/xml-crypto/releases/tag/v3.2.1"
  }, {
    "type" : "WEB",
    "url" : "https://github.com/node-saml/xml-crypto/releases/tag/v6.0.1"
  }, {
    "type" : "WEB",
    "url" : "https://workos.com/blog/samlstorm"
  } ],
  "database_specific" : {
    "cwe_ids" : [ "CWE-347" ],
    "severity" : "CRITICAL",
    "github_reviewed" : true,
    "github_reviewed_at" : "2025-03-14T17:14:23Z",
    "nvd_published_at" : "2025-03-14T17:15:52Z"
  }
}