Critical Vulnerability in libspring-java Package: Case Insensitivity Issue in DataBinder
Summary
UBUNTU-CVE-2024-38820: The fix for CVE-2022-22968 made disallowedFields patterns in DataBinder case insensitive. Affects libspring-java versions 3.0.6.RELEASE-10 – 3.0.6.RELEASE-9. No fix is published. How to fix ↓
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Background
libspring-java is a widely used framework that provides comprehensive support for developing Java applications. It includes various modules for aspects such as dependency injection, transaction management, and web applications. The package is integral to many enterprise-level applications, making its security paramount. This vulnerability arises from a flaw in the DataBinder component, which can lead to unintended exposure of fields due to case insensitivity in disallowedFields patterns.
Vulnerability Detail
The vulnerability, identified as CVE-2024-38820, stems from a fix for a previous issue (CVE-2022-22968) that made disallowedFields patterns in DataBinder case insensitive. However, the implementation of String.toLowerCase() has locale-dependent exceptions that could result in certain fields not being protected as intended. This could potentially allow unauthorized access to sensitive data, posing a significant security risk to applications relying on this package.
How To Fix
No fixed version is published for this vulnerability.
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Workaround
As a temporary workaround, developers can manually validate field names and implement additional checks to ensure that sensitive fields are not exposed. This can be done by overriding the default behavior of DataBinder in your application code, ensuring that field names are checked against a predefined list of allowed names.
Conclusion
The CVE-2024-38820 vulnerability in the libspring-java package poses a significant risk due to its case insensitivity issue in DataBinder. It is crucial for developers to update to the latest patched version to mitigate this risk. Additionally, implementing manual checks can serve as a temporary measure until the update is applied.
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FAQ
CVE-2024-38820 is a vulnerability in the libspring-java package that allows certain fields to be accessed unintentionally due to case insensitivity in disallowedFields patterns.
If your application uses libspring-java, this vulnerability could lead to unauthorized access to sensitive data, potentially compromising application security.
If an immediate update is not possible, implement manual checks for field names to prevent unauthorized access as a temporary workaround.
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The CVSS score for CVE-2024-38820 is 3.1, indicating a medium severity level.
References
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