Denial-of-Service Vulnerability in libspring-java Package
Summary
UBUNTU-CVE-2023-20861: In Spring Framework versions 6.0.0 - 6.0.6, 5.3.0 - 5.3.25, 5.2.0.RELEASE - 5.2.22.RELEASE, and older unsupported versions, it is possible for a user to provide a specially crafted SpEL expression that may cause a denial... 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
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 web application development. The package is essential for developers looking to create robust and scalable applications. However, it has been identified to have a vulnerability that could lead to a denial-of-service (DoS) condition, affecting the reliability of applications that depend on it.
Vulnerability Detail
In Spring Framework versions 6.0.0 - 6.0.6, 5.3.0 - 5.3.25, 5.2.0.RELEASE - 5.2.22.RELEASE, 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) condition. This vulnerability arises from improper handling of SpEL expressions, which can lead to excessive resource consumption, potentially crashing the application or making it unresponsive. The CVSS score for this vulnerability is 6.5, indicating a medium severity level.
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 user input for SpEL expressions or to implement input validation to prevent the execution of potentially harmful expressions. This can be done by sanitizing user inputs before processing them with SpEL.
Conclusion
The libspring-java package has a vulnerability that can lead to denial-of-service conditions due to improper handling of SpEL expressions. It is crucial for users to update to the latest patched versions to ensure the security and reliability of their applications. Additionally, implementing input validation can serve as a temporary measure to mitigate potential risks.
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FAQ
The vulnerability allows for denial-of-service (DoS) conditions through specially crafted SpEL expressions.
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The CVSS score for this vulnerability is 6.5, indicating a medium severity level.
Update the libspring-java package to a patched version using the command: 'sudo apt-get update && sudo apt-get install libspring-java'.
Yes, a temporary workaround is to restrict user input for SpEL expressions and implement input validation.
References
Related vulnerabilities
Recent vulnerabilities recorded for libspring-java.
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