Django Type Conversion Vulnerability in FilePathField and IPAddressField
Summary
CVE-2014-0474: The (1) FilePathField, (2) GenericIPAddressField, and (3) IPAddressField model field classes in Django before 1.4.11, 1.5.x before 1.5.6, 1.6.x before 1.6.3, and 1.7.x before 1.7 beta 2 do not properly perform type conve... Affects python-django versions < 1.6.3-1. Fixed in 1.6.3-1. How to fix ↓
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Background
Django is a high-level Python web framework that encourages rapid development and clean, pragmatic design. It provides a robust set of features for building web applications, including an ORM (Object-Relational Mapping) system, which allows developers to interact with databases using Python objects. The vulnerability in question affects the FilePathField, GenericIPAddressField, and IPAddressField model field classes in Django versions prior to 1.4.11, 1.5.x before 1.5.6, 1.6.x before 1.6.3, and 1.7.x before 1.7 beta 2. This issue arises from improper type conversion, particularly related to MySQL typecasting, which could lead to unexpected behaviors and potential security risks.
Vulnerability Detail
The vulnerability stems from the failure of the FilePathField, GenericIPAddressField, and IPAddressField model field classes to properly perform type conversion. This oversight allows remote attackers to exploit the typecasting mechanism in MySQL, leading to unspecified impacts and vectors. The lack of adequate type validation can result in data integrity issues, application crashes, or even unauthorized access to sensitive information, making it critical for users of affected Django versions to address this vulnerability promptly.
How To Fix
Minimum fixed version
1.6.3-1
This is the first release that contains the fix.
sudo apt-get install --only-upgrade python-djangoTip — Not sure which version your app runs? Vulert can match this fix to it. Scan free →
Workaround
If upgrading is not immediately possible, consider implementing input validation to ensure that the data being passed to these fields is of the expected type. This can help mitigate some risks associated with the vulnerability until a proper upgrade can be performed.
Conclusion
The vulnerability in Django's model field classes poses significant risks to applications using affected versions. It is crucial for developers to upgrade to a secure version and implement best practices for input validation to safeguard their applications. Utilizing tools like Vulert can assist in monitoring for such vulnerabilities effectively.
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FAQ
Django versions before 1.4.11, 1.5.x before 1.5.6, 1.6.x before 1.6.3, and 1.7.x before 1.7 beta 2 are affected.
The vulnerability can lead to data integrity issues, application crashes, or unauthorized access to sensitive information.
You can use Vulert, which monitors and alerts for open-source vulnerabilities in real-time. Check your application against this vulnerability using the Vulert playground at Vulert Scanner.
Yes, implementing input validation for the affected fields can help mitigate some risks until an upgrade is possible.
If an immediate upgrade is not feasible, ensure that you have implemented proper input validation and monitor your application for any unusual behavior.
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