RESTEasy Vulnerability CVE-2016-6345: Insufficient Randomness in Async Jobs
Summary
CVE-2016-6345: RESTEasy allows remote authenticated users to obtain sensitive information by leveraging "insufficient use of random values" in async jobs. Affects resteasy3.0 versions < 3.0.26-1. Fixed in 3.0.26-1. How to fix ↓
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Background
RESTEasy is a JAX-RS implementation that provides a framework for building RESTful web services in Java. It is widely used in various applications to facilitate the development of APIs. The package is known for its ease of use and integration with Java EE environments. However, it has been identified to have a vulnerability that allows remote authenticated users to access sensitive information due to insufficient randomness in asynchronous job processing.
Vulnerability Detail
The vulnerability CVE-2016-6345 arises from RESTEasy's inadequate use of random values in its asynchronous job handling. This flaw can be exploited by remote authenticated users to gain unauthorized access to sensitive information. The lack of randomness can lead to predictable outcomes, making it easier for attackers to infer or retrieve confidential data. The technical implications include potential data leaks and unauthorized information disclosure, which can severely compromise the integrity and confidentiality of the affected systems.
How To Fix
Minimum fixed version
3.0.26-1
This is the first release that contains the fix.
sudo apt-get install --only-upgrade resteasy3.0Tip — Not sure which version your app runs? Vulert can match this fix to it. Scan free →
Workaround
As a temporary measure, you can limit access to the RESTEasy services by implementing stricter authentication and authorization controls. This can help mitigate the risk of unauthorized access until the package is updated. Additionally, consider reviewing and enhancing the randomness used in your application’s asynchronous job processing.
Conclusion
The CVE-2016-6345 vulnerability in RESTEasy poses a significant risk due to insufficient randomness in async job processing, allowing unauthorized access to sensitive information. It is crucial to upgrade to the fixed version to mitigate this risk effectively. Additionally, utilizing tools like Vulert can help monitor and alert for such vulnerabilities in real-time.
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FAQ
CVE-2016-6345 is a vulnerability in RESTEasy that allows remote authenticated users to access sensitive information due to insufficient randomness in async job processing.
You can use the Vulert playground at Vulert Scanner to check if your application is affected by this vulnerability without needing to sign up.
The vulnerability can lead to unauthorized access to sensitive information, data leaks, and potential breaches of confidentiality.
The CVSS score for CVE-2016-6345 is 6.5, indicating a medium severity level.
If an immediate upgrade is not possible, implement stricter access controls and review your application's randomness in async job processing as a temporary workaround.
References
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