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json-ptr@2.0.1-master.434066d vulnerabilities

A complete implementation of JSON Pointer (RFC 6901) for nodejs and modern browsers.

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Direct Vulnerabilities

Known vulnerabilities in the json-ptr package. This does not include vulnerabilities belonging to this package’s dependencies.

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Vulnerability Vulnerable Version
  • M
Prototype Pollution

json-ptr is a complete implementation of JSON Pointer (RFC 6901) for nodejs and modern browsers.

Affected versions of this package are vulnerable to Prototype Pollution. A type confusion vulnerability can lead to a bypass of CVE-2020-7766 when the user-provided keys used in the pointer parameter are arrays.

PoC

const { JsonPointer } = require("json-ptr");

// JsonPointer.set({}, ['__proto__', 'polluted'], 'yes', true); 
// console.log(polluted); // Error: Attempted prototype pollution disallowed.

JsonPointer.set({}, [['__proto__'], 'polluted'], 'yes', true); 
console.log(polluted); // yes

How to fix Prototype Pollution?

Upgrade json-ptr to version 3.0.0 or higher.

<3.0.0
  • H
Arbitrary Code Execution

json-ptr is a complete implementation of JSON Pointer (RFC 6901) for nodejs and modern browsers.

Affected versions of this package are vulnerable to Arbitrary Code Execution via the .get() method.

How to fix Arbitrary Code Execution?

Upgrade json-ptr to version 2.1.0 or higher.

<2.1.0
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