#VU26998 Prototype Pollution in paypal-adaptive - CVE-2020-7642

Vulnerability identifier: #VU26998

Vulnerability risk: Medium

CVSSv4.0: 2.1 [CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:N/VI:L/VA:L/SC:N/SI:N/SA:N/E:P/U:Green]

CVE-ID: CVE-2020-7642

CWE-ID: CWE-400

Exploitation vector: Network

Exploit availability: No

Vulnerable software:
paypal-adaptive
Web applications / Modules and components for CMS

Vendor: Ideame

Description

The vulnerability allows a remote attacker to compromise the target system.

The vulnerability exists due to improper input validation in the "PayPal" function in "__proto__" payload. A remote authenticated attacker can send a specially crafted request and add or modify properties of Object.prototype.

Mitigation
Cybersecurity Help is currently unaware of any official solution to address this vulnerability.

Vulnerable software versions

paypal-adaptive: 0.1.0 - 0.4.2

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External links
https://snyk.io/vuln/SNYK-JS-PAYPALADAPTIVE-565089
https://github.com/Ideame/paypal-adaptive-sdk-nodejs/blob/master/lib/paypal-adaptive.js#L31

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Q & A

Can this vulnerability be exploited remotely?

Yes. This vulnerability can be exploited by a remote authenticated user via the Internet.

Is there known malware, which exploits this vulnerability?

No. We are not aware of malware exploiting this vulnerability. However, proof of concept for this vulnerability is available.