CVE-2020-7703: Prototype Pollution in nis-utils

nis-utils Updated 02 Oct 2025

Summary

06/05/2021
No i
Critical
9.8

CVE-2020-7703: Prototype Pollution in nis-utils. Affects nis-utils versions < 0.6.10. No fix is published. How to fix ↓

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Background

nis-utils is an npm package that provides utilities for working with Network Information Service (NIS) in Node.js applications. It offers various functions and methods to interact with NIS services. However, versions up to and including 0.6.10 of nis-utils are vulnerable to Prototype Pollution through the setValue function.

Vulnerability Detail

Prototype Pollution is a vulnerability that occurs when an attacker can inject or modify properties of an object's prototype. In the case of nis-utils, the setValue function is susceptible to this type of attack. An attacker can manipulate the prototype of an object and introduce malicious properties or modify existing ones. This can lead to various security issues, such as remote code execution, information disclosure, or denial of service.

How To Fix

No fixed version is published for this vulnerability.

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Workaround

There is no known workaround for this vulnerability. It is crucial to update to a fixed version of nis-utils to mitigate the risk of exploitation.

Conclusion

The vulnerability in nis-utils up to version 0.6.10 poses a significant risk due to Prototype Pollution. It is crucial for developers to update their nis-utils package to a version beyond 0.6.10 to ensure the security of their applications. For further support on vulnerability remediation, please contact DevNack.com.

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FAQ

Prototype Pollution is a vulnerability that allows an attacker to modify an object's prototype, leading to potential security issues.

The setValue function in nis-utils is susceptible to manipulation of an object's prototype, allowing an attacker to introduce or modify properties.

This vulnerability can result in remote code execution, information disclosure, or denial of service, depending on how it is exploited.

Yes, upgrading nis-utils to a version beyond 0.6.10 resolves this vulnerability.

No, updating to a fixed version of nis-utils is the only known solution to mitigate the risk of exploitation.

How To Fix

No fixed version is published for this vulnerability.

Tip — Not sure whether your app is affected? Vulert can check the versions your app actually runs. Scan free →

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