Insufficient Input Validation Affecting bson-objectid package, versions *
Threat Intelligence
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Start learning- Snyk IDSNYK-JS-BSONOBJECTID-570765
- published1 Jun 2020
- disclosed12 Nov 2019
- creditFeng Xiao (xiaofen9)
Introduced: 12 Nov 2019
CVE-2019-19729 (opens in a new tab)How to fix?
There is no fixed version for bson-objectid.
Overview
bson-objectid is a library that allows you to construct ObjectIDs without the mongodb driver or bson module.
Affected versions of this package are vulnerable to Insufficient Input Validation. The ObjectID() function allows an attacker to generate a malformed objectid by inserting an additional property to the user-input, because bson-objectid will return early if it detects _bsontype==ObjectID in the user-input object. As a result, objects in arbitrary forms can bypass formatting if they have a valid bsontype.
PoC by Feng Xiao (xiaofen9)
var ObjectID = require("bson-objectid");var json = { "mal_formkey": { "payload": "xxxx" }, "_bsontype" : "ObjectID" };
console.log(ObjectID(json)); console.log(ObjectID.isValid(ObjectID(json)));