CVE-2022-39353 xmldom allows multiple root nodes in a DOM

2022-11-0200:00:00

CWE-20

CWE-1288

GitHub_M

www.cve.org

9.4 High

CVSS3

Attack Vector

NETWORK

Attack Complexity

LOW

Privileges Required

NONE

User Interaction

NONE

Scope

UNCHANGED

Confidentiality Impact

LOW

Integrity Impact

HIGH

Availability Impact

HIGH

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:H/A:H

9.2 High

AI Score

Confidence

High

0.009 Low

EPSS

Percentile

83.1%

JSON

xmldom is a pure JavaScript W3C standard-based (XML DOM Level 2 Core) DOMParser and XMLSerializer module. xmldom parses XML that is not well-formed because it contains multiple top level elements, and adds all root nodes to the childNodes collection of the Document, without reporting any error or throwing. This breaks the assumption that there is only a single root node in the tree, which led to issuance of CVE-2022-39299 as it is a potential issue for dependents. Update to @xmldom/xmldom@~0.7.7, @xmldom/xmldom@~0.8.4 (dist-tag latest) or @xmldom/xmldom@>=0.9.0-beta.4 (dist-tag next). As a workaround, please one of the following approaches depending on your use case: instead of searching for elements in the whole DOM, only search in the documentElementor reject a document with a document that has more then 1 childNode.

CNA Affected

[
  {
    "vendor": "xmldom",
    "product": "xmldom",
    "versions": [
      {
        "version": "<= 0.6.0",
        "status": "affected"
      },
      {
        "version": "< 0.7.7",
        "status": "affected"
      },
      {
        "version": ">= 0.8.0, < 0.8.4",
        "status": "affected"
      },
      {
        "version": ">= 0.9.0-beta.1, < 0.9.0-beta.4",
        "status": "affected"
      }
    ]
  }
]