CVE-2019-15486: django-js-reverse XSS Vulnerability
Summary
CVE-2019-15486: django-js-reverse (aka Django JS Reverse) before 0.9.1 has XSS via js_reverse_inline. Affects django-js-reverse versions < 0.9.1. Fixed in 0.9.1. How to fix ↓
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Background
django-js-reverse is a Python package available on PyPI that provides a JavaScript reverse URL resolver for Django. It allows developers to generate URLs dynamically in JavaScript using the same routing configuration as Django. This package is widely used in Django projects to simplify the process of generating URLs in JavaScript. However, versions prior to 0.9.1 are vulnerable to a cross-site scripting (XSS) attack.
Vulnerability Detail
The vulnerability (CVE-2019-15486) in django-js-reverse allows an attacker to inject malicious JavaScript code into the generated URLs. This can lead to the execution of arbitrary code in the context of the victim's browser, potentially compromising user data or performing unauthorized actions. The vulnerability originates from improper input sanitization in the package, allowing the injection of malicious code. It is important to note that this vulnerability can only be exploited if the generated URLs are rendered in an unsafe manner, such as directly embedding them in HTML without proper escaping or validation.
How To Fix
Minimum fixed version
0.9.1
This is the first release that contains the fix.
pip install --upgrade "django-js-reverse==0.9.1"Tip — Not sure which version your app runs? Vulert can match this fix to it. Scan free →
Workaround
If upgrading to the latest version is not immediately feasible, a temporary workaround is to manually sanitize and escape the generated URLs before rendering them in HTML. This can be done using appropriate HTML encoding functions or libraries in the programming language being used. It is crucial to ensure that all user-generated or dynamic data included in the URLs is properly sanitized to prevent XSS attacks.
Conclusion
The django-js-reverse package prior to version 0.9.1 is vulnerable to a cross-site scripting (XSS) attack. It is crucial for developers using this package to upgrade to the latest version or apply the recommended workaround to mitigate the risk of exploitation. For further assistance or support in addressing this vulnerability, please contact DevNack.com.
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FAQ
The vulnerability allows an attacker to execute arbitrary JavaScript code in the victim's browser, potentially leading to unauthorized actions, data theft, or further exploitation of the user's system.
You can use Vulert's playground at Vulert Scanner to check if your application is affected by this vulnerability. Simply provide your Pipfile.lock file, and Vulert will analyze it for any known vulnerabilities, including this one.
There have been no publicly reported instances of this vulnerability being actively exploited. However, it is important to promptly address and fix the vulnerability to prevent any potential exploitation.
Yes, this vulnerability has been assigned the CVE identifier CVE-2019-15486.
Yes, the vulnerability can be fixed by upgrading django-js-reverse to version 0.9.1 or later, which includes the necessary security patches.
References
Related vulnerabilities
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