CWE-1321

All versions of package record-like-deep-assign are vulnerable to Prototype Pollution via the main functionality.

All versions of package ts-nodash are vulnerable to Prototype Pollution via the Merge() function due to lack of validation input.

msgpack5 is a msgpack v5 implementation for node.js and the browser. In msgpack5 before versions 3.6.1, 4.5.1, and 5.2.1 there is a “Prototype Poisoning” vulnerability. When msgpack5 decodes a map containing a key “__proto__”, it assigns the decoded value to __proto__. Object.prototype.__proto__ is an accessor property for the receiver’s prototype. If the value corresponding to the key __proto__ decodes to an object or null, msgpack5 sets the decoded object’s prototype to that value. An attacker who can submit crafted MessagePack data to a service can use this to produce values that appear to be of other types; may have unexpected prototype properties and methods (for example length, numeric properties, and push et al if __proto__’s value decodes to an Array); and/or may throw unexpected exceptions when used (for example if the __proto__ value decodes to a Map or Date). Other unexpected behavior might be produced for other types. There is no effect on the global prototype. This “prototype poisoning” is sort of a very limited inversion of a prototype pollution attack. Only the decoded value’s prototype is affected, and it can only be set to msgpack5 values (though if the victim makes use of custom codecs, anything could be a msgpack5 value). We have not found a way to escalate this to true prototype pollution (absent other bugs in the consumer’s code). This has been fixed in msgpack5 version 3.6.1, 4.5.1, and 5.2.1. See the referenced GitHub Security Advisory for an example and more details.

Dynamoose is an open-source modeling tool for Amazon’s DynamoDB. In Dynamoose from version 2.0.0 and before version 2.7.0 there was a prototype pollution vulnerability in the internal utility method “lib/utils/object/set.ts”. This method is used throughout the codebase for various operations throughout Dynamoose. We have not seen any evidence of this vulnerability being exploited. There is no evidence this vulnerability impacts versions 1.x.x since the vulnerable method was added as part of the v2 rewrite. This vulnerability also impacts v2.x.x beta/alpha versions. Version 2.7.0 includes a patch for this vulnerability.

Node-Red is a low-code programming for event-driven applications built using nodejs. Node-RED 1.2.7 and earlier contains a Prototype Pollution vulnerability in the admin API. A badly formed request can modify the prototype of the default JavaScript Object with the potential to affect the default behaviour of the Node-RED runtime. The vulnerability is patched in the 1.2.8 release. A workaround is to ensure only authorized users are able to access the editor url.

Improperly Controlled Modification of Object Prototype Attributes (‘Prototype Pollution’) in jquery-plugin-query-object 2.2.3 allows a malicious user to inject properties into Object.prototype.