Denial of Service Vulnerability in libspring-java Package
Summary
DEBIAN-CVE-2024-38808: In Spring Framework versions 5.3.0 - 5.3.38 and older unsupported versions, it is possible for a user to provide a specially crafted Spring Expression Language (SpEL) expression that may cause a denial of service (DoS) c... Affects libspring-java versions 4.3.30-1 – 4.3.30-3. No fix is published. How to fix ↓
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Background
The libspring-java package is a core component of the Spring Framework, which is widely used for building Java applications. It provides comprehensive infrastructure support for developing Java applications, including features for dependency injection, transaction management, and aspect-oriented programming. This package is essential for developers looking to create robust and scalable applications. However, it is susceptible to a vulnerability that allows malicious users to exploit Spring Expression Language (SpEL) expressions, potentially leading to a denial of service (DoS) condition.
Vulnerability Detail
In Spring Framework versions 5.3.0 to 5.3.38, and older unsupported versions, a vulnerability exists that allows users to submit specially crafted SpEL expressions. If an application evaluates these user-supplied expressions, it can lead to a denial of service (DoS) condition. This vulnerability arises from improper handling of SpEL expressions, which can be exploited to consume excessive resources, causing the application to become unresponsive.
How To Fix
No fixed version is published for this vulnerability.
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Workaround
As a temporary workaround, it is advisable to restrict the evaluation of user-supplied SpEL expressions in your application. This can be achieved by implementing input validation and sanitization to ensure that only safe expressions are processed. Additionally, consider disabling SpEL evaluation for user inputs until the package is updated.
Conclusion
The libspring-java package has a vulnerability that allows for denial of service through malicious SpEL expressions. It is crucial for developers to update to the patched version of the package and implement workarounds to safeguard their applications until the update can be applied.
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FAQ
The vulnerability can lead to a denial of service (DoS) condition, causing the application to become unresponsive when malicious SpEL expressions are evaluated.
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The affected versions include libspring-java versions 5.3.0 to 5.3.38 and older unsupported versions.
Yes, a patched version of the libspring-java package is available. It is recommended to update to the latest version to mitigate the risk.
If an immediate update is not possible, implement input validation and sanitization to restrict the evaluation of user-supplied SpEL expressions as a temporary workaround.
References
Related vulnerabilities
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