xmldom prior 0.7.7/0.8.4/0.9.0-beta.4 improper validation of consistency within input

Summaryinfo

A vulnerability was found in xmldom. It has been classified as critical. This affects an unknown function. Performing a manipulation results in improper validation of consistency within input. This vulnerability is reported as CVE-2022-39353. The attack is possible to be carried out remotely. No exploit exists. Upgrading the affected component is recommended.

Detailsinfo

A vulnerability was found in xmldom. It has been classified as critical. This affects an unknown code block. The manipulation with an unknown input leads to a improper validation of consistency within input vulnerability. CWE is classifying the issue as CWE-1288. The product receives a complex input with multiple elements or fields that must be consistent with each other, but it does not validate or incorrectly validates that the input is actually consistent. This is going to have an impact on confidentiality, integrity, and availability. The summary by CVE is:

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 `documentElement`or reject a document with a document that has more then 1 `childNode`.

The weakness was disclosed 11/02/2022 as 150. It is possible to read the advisory at github.com. This vulnerability is uniquely identified as CVE-2022-39353 since 09/02/2022. The technical details are unknown and an exploit is not publicly available.

Upgrading to version 0.7.7, 0.8.4 or 0.9.0-beta.4 eliminates this vulnerability.

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Productinfo

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• xmldom

Website

• Product: https://github.com/xmldom/xmldom/

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