Critical Reflected File Download Vulnerability in libspring-java Package
Summary
UBUNTU-CVE-2015-5211: Under some situations, the Spring Framework 4.2.0 to 4.2.1, 4.0.0 to 4.1.7, 3.2.0 to 3.2.14 and older unsupported versions is vulnerable to a Reflected File Download (RFD) attack. Affects libspring-java versions < 3.0.6.RELEASE-13ubuntu0.1~esm2. Fixed in 3.0.6.RELEASE-13ubuntu0.1~esm2. 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, aspect-oriented programming, and transaction management. This package is crucial for developers looking to create robust and scalable applications. However, certain versions of this package are vulnerable to a Reflected File Download (RFD) attack, which can lead to severe security implications.
Vulnerability Detail
The vulnerability, identified as CVE-2015-5211, affects versions of the Spring Framework from 4.2.0 to 4.2.1, 4.0.0 to 4.1.7, and 3.2.0 to 3.2.14, as well as older unsupported versions. It allows a malicious user to craft a URL with a batch script extension, causing the response to be downloaded instead of rendered. This can lead to unauthorized file downloads and potential exploitation of the user's system, making it a critical security risk.
How To Fix
Minimum fixed version
3.0.6.RELEASE-13ubuntu0.1~esm2
This is the first release that contains the fix.
sudo apt-get install --only-upgrade libspring-javaTip — Not sure which version your app runs? Vulert can match this fix to it. Scan free →
Workaround
As a temporary workaround, it is advisable to restrict access to the affected endpoints and validate user inputs to mitigate the risk of exploitation until the package can be updated.
Conclusion
The libspring-java package has a critical vulnerability (CVE-2015-5211) that can lead to serious security risks through Reflected File Download attacks. It is crucial for users to update to the patched versions to safeguard their applications. Utilizing tools like Vulert can help monitor and manage vulnerabilities effectively.
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FAQ
CVE-2015-5211 is a vulnerability in the Spring Framework that allows for a Reflected File Download (RFD) attack, potentially leading to unauthorized file downloads.
Affected versions include Spring Framework 4.2.0 to 4.2.1, 4.0.0 to 4.1.7, and 3.2.0 to 3.2.14, along with older unsupported versions.
You can use Vulert, which monitors and alerts for open-source vulnerabilities in real-time. You can check your application using the Vulert playground without needing to sign up.
The CVSS score for this vulnerability is 9.6, indicating a critical level of severity.
If an immediate update is not possible, consider implementing access restrictions and input validation as temporary measures to reduce the risk of exploitation.
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