Critical Prototype Pollution Vulnerability in Node.js Package y18n
Summary
ALPINE-CVE-2020-7774: The package y18n before 3.2.2, 4.0.1 and 5.0.5, is vulnerable to Prototype Pollution. Affects nodejs versions < 10.24.1-r0. Fixed in 10.24.1-r0. How to fix ↓
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Background
The y18n package is a localization library for Node.js that enables developers to easily translate their applications into different languages. It is widely used in various Node.js applications for its simplicity and effectiveness in handling internationalization. However, the package has been found to be vulnerable to a critical issue that allows for prototype pollution, which can lead to severe security risks.
Vulnerability Detail
The vulnerability identified as CVE-2020-7774 affects versions of the y18n package prior to 3.2.2, 4.0.1, and 5.0.5. This flaw allows attackers to manipulate the prototype of objects, potentially leading to unauthorized access and modification of application data. The ramifications of this vulnerability can be severe, as it may allow attackers to execute arbitrary code, leading to data breaches or service disruptions. The vulnerability arises from improper handling of user input, which can be exploited to alter the behavior of the application.
How To Fix
Minimum fixed version
10.24.1-r0
This is the first release that contains the fix.
sudo apk add --upgrade nodejsTip — Not sure which version your app runs? Vulert can match this fix to it. Scan free →
Workaround
If immediate patching is not feasible, consider implementing input validation to sanitize user inputs before processing them. This can help mitigate the risk of prototype pollution. For example, you can use libraries like 'validator' to validate and sanitize inputs.
Conclusion
The y18n package has a critical vulnerability that allows for prototype pollution, posing significant risks to applications that utilize it. It is crucial to update to the latest patched versions to safeguard against potential exploits. Implementing input validation can serve as a temporary workaround while updates are applied.
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FAQ
Prototype pollution is a security vulnerability that allows an attacker to modify the prototype of a base object, which can lead to unexpected behavior in applications.
You can use Vulert, which monitors and alerts for open-source vulnerabilities in your software by analyzing your manifest file. Visit Vulert Scanner to check your application without any signup.
Failing to fix this vulnerability can lead to severe security risks, including unauthorized access to sensitive data and potential exploitation of your application.
Yes, you should upgrade to y18n version 3.2.2, 4.0.1, or 5.0.5 or later to mitigate the vulnerability.
The CVSS score of this vulnerability is 9.8, indicating a critical level of severity.
References
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