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critical9.8

CVE-2023-39332

Various `node:fs` functions allow specifying paths as either strings or `Uint8Array` objects.

Impact

Various `node:fs` functions allow specifying paths as either strings or `Uint8Array` objects. In Node.js environments, the `Buffer` class extends the `Uint8Array` class. Node.js prevents path traversal through strings (see CVE-2023-30584) and `Buffer` objects (see CVE-2023-32004), but not through non-`Buffer` `Uint8Array` objects. This is distinct from CVE-2023-32004 which only referred to `Buffer` objects. However, the vulnerability follows the same pattern using `Uint8Array` instead of `Buffer`. Please note that at the time this CVE was issued, the permission model is an experimental feature of Node.js.

Affected products

VendorProductAffected versions
NodejsNode.Js
from 20.0.0 before 20.8.0
FedoraprojectFedora
Version 39

Weakness classification

CWE-22

References