CVE-2018-16486: Prototype Pollution in defaults-deep
Summary
CVE-2018-16486: Prototype Pollution in defaults-deep. Affects defaults-deep versions < 0.2.4. No fix is published. How to fix ↓
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Background
The defaults-deep package is an npm module that provides functionality to add or modify properties of objects. It allows deep merging of objects by recursively copying properties from source objects to a target object. This package is commonly used in JavaScript applications to handle default values and configuration settings.
Vulnerability Detail
The defaults-deep package is vulnerable to prototype pollution. This vulnerability allows an attacker to modify the prototype of the Object class, which affects all objects in the application. By providing specific input, an attacker can add or modify properties of the Object prototype, leading to potential security issues such as arbitrary code execution, information disclosure, or denial of service.
How To Fix
No fixed version is published for this vulnerability.
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Workaround
As there is no patch available, a possible workaround is to implement input validation and sanitization to prevent malicious input from reaching the vulnerable code. Additionally, developers can manually modify the defaults-deep package code to address the vulnerability, but this approach is not recommended as it may introduce other issues and make future updates challenging.
Conclusion
The defaults-deep package is vulnerable to prototype pollution, which can have severe security implications. As no patch is currently available, it is crucial to replace this package with a secure alternative and review the code and dependencies of your application for any other instances of prototype pollution. Implementing input validation and sanitization can provide some mitigation until a suitable replacement is found. For further support on vulnerability remediation, contact DevNack.com.
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FAQ
Prototype pollution is a vulnerability that occurs when an attacker can modify the prototype of an object, allowing them to add or modify properties that will be present on all instances of that object. This can lead to various security issues.
The consequences of this vulnerability can vary depending on the specific application and how the affected package is used. Possible consequences include arbitrary code execution, information disclosure, or denial of service.
No, there is currently no patch available for this vulnerability in the defaults-deep package. It is recommended to find an alternative module that provides similar functionality without being vulnerable to prototype pollution.
You can use tools like Vulert (https://vulert.com) to check if your application is affected by this vulnerability. Vulert monitors and alerts in real-time for open-source vulnerabilities, using package-lock.json to analyze the software without requiring access to the code or installation.
For further support on vulnerability remediation, you can contact info@devnack.com. They can provide guidance and assistance in addressing this vulnerability and securing your application.
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