CVE-2021-41097 PoC — Prototype pollution in aurelia-path

Source

https://github.com/projectdiscovery/nuclei-templates/blob/main/http/cves/2021/CVE-2021-41097.yaml

Associated Vulnerability

Title: Prototype pollution in aurelia-path (CVE-2021-41097)
Description:aurelia-path is part of the Aurelia platform and contains utilities for path manipulation. There is a prototype pollution vulnerability in aurelia-path before version 1.1.7. The vulnerability exposes Aurelia application that uses `aurelia-path` package to parse a string. The majority of this will be Aurelia applications that employ the `aurelia-router` package. An example is this could allow an attacker to change the prototype of base object class `Object` by tricking an application to parse the following URL: `https://aurelia.io/blog/?__proto__[asdf]=asdf`. The problem is patched in version `1.1.7`.

Description

Aurelia-path before 1.1.7 contains a prototype pollution caused by parsing malicious URL parameters, letting attackers modify Object.prototype, exploit requires the application to parse user-controlled URLs.

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