CVE-2017-16018: Cross-Site Scripting (XSS) in restify
Summary
CVE-2017-16018: Cross-Site Scripting (XSS) in restify. Affects restify versions >= 2.0.0, < 4.1.0. Fixed in 4.1.0. How to fix ↓
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Background
The restify package is an open-source framework for building RESTful web services in Node.js. It provides a set of utilities and plugins to simplify the development of server-side applications. However, versions of restify up to 4.0.4 are vulnerable to a cross-site scripting (XSS) attack when using URL encoded script tags in a non-existent URL.
Vulnerability Detail
The vulnerability in restify allows an attacker to inject malicious script tags into the response of a server when a non-existent URL with URL encoded script tags is requested. This can lead to the execution of arbitrary JavaScript code in the context of the victim's browser, potentially enabling various attacks such as session hijacking, defacement, or stealing sensitive information.
How To Fix
Minimum fixed version
4.1.0
This is the first release that contains the fix.
npm install restify@4.1.0Tip — Not sure which version your app runs? Vulert can match this fix to it. Scan free →
Workaround
If updating to the latest version is not immediately feasible, a temporary workaround is to manually sanitize user input and ensure that script tags are not executed. This can be achieved by using a library or function that escapes or removes any potentially harmful characters or tags from user input before rendering it in the response.
Conclusion
The restify package up to version 4.0.4 is vulnerable to a cross-site scripting (XSS) attack. It is crucial to update to version 4.1.0 or later to mitigate this vulnerability. If immediate updating is not possible, manual sanitization of user input and prevention of script tag execution can serve as a temporary workaround. For further support, please contact DevNack.com.
See every vulnerability recorded for restify →
FAQ
This vulnerability allows an attacker to execute arbitrary JavaScript code in the victim's browser, potentially leading to various attacks such as session hijacking or stealing sensitive information.
You can use the Vulert playground at Vulert Scanner to check if your application is affected by this vulnerability. Simply provide your package-lock.json file and the playground will analyze it for any known vulnerabilities.
Yes, a temporary workaround is to manually sanitize user input and ensure that script tags are not executed. This can be achieved by using a library or function that escapes or removes any potentially harmful characters or tags from user input before rendering it in the response.
While specific exploits for this vulnerability may not be publicly available, the presence of this vulnerability increases the risk of various attacks such as cross-site scripting (XSS) and session hijacking. It is important to promptly update to the latest version of the restify package to mitigate this risk.
For further support on vulnerability remediation, you can reach out to info@devnack.com. Our team of experts can provide guidance and assistance in addressing this vulnerability in your application.
