critical9.8

CVE-2022-39353

xmldom allows multiple root nodes in a DOM

Impact

### Impact 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 https://nvd.nist.gov/vuln/detail/CVE-2022-39299 and is a potential issue for dependents. ### Patches 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`). ### Workarounds One of the following approaches might help, depending on your use case: - Instead of searching for elements in the whole DOM, only search in the `documentElement`. - Reject a document with a document that has more then 1 `childNode`. ### References - https://nvd.nist.gov/vuln/detail/CVE-2022-39299 - https://github.com/jindw/xmldom/issues/150 ### For more information If you have any questions or comments about this advisory: * Email us at security@xmldom.org

Affected packages

Ecosystem	Package	Affected	Fixed in
npm	`xmldom`	<= 0.6.0	none recorded
npm	`@xmldom/xmldom`	< 0.7.7	0.7.7

Affected products

Vendor	Product	Affected versions
Xmldom Project	Xmldom	before 0.6.0 from 0.7.0 before 0.7.7 from 0.8.0 before 0.8.4 Version 0.9.0
Debian	Debian Linux	Version 10.0

Weakness classification

CWE-20 CWE-1288