multiparty@4.2.3 and lower versions are vulnerable to denial of service via uncaught exception. By sending a multipart/form-data request with a field name that collides with an inherited Object.prototype property such as proto, constructor, or toString, the parser invokes .push() on the inherited prototype value rather than an array, throwing a TypeError that propagates as an uncaught exception and crashes the process. Impact: any service accepting multipart uploads via multiparty is affected. Workarounds: none. Upgrade to multiparty@4.3.0 or higher.
Weakness
An exception is thrown from a function, but it is not caught.
Affected Software
| Name | Vendor | Start Version | End Version |
|---|---|---|---|
| Multiparty | Pillarjs | * | 4.3.0 (excluding) |
| Node-multiparty | Ubuntu | upstream | * |