Critical Vulnerability in Fast DDS Package: Unhandled Exception Leading to Crashes
Summary
UBUNTU-CVE-2023-39945: eprosima Fast DDS is a C++ implementation of the Data Distribution Service standard of the Object Management Group. Affects fastdds versions 2.1.0+ds-9 – 2.5.0+ds-3. No fix is published. How to fix ↓
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Background
eprosima Fast DDS is a C++ implementation of the Data Distribution Service (DDS) standard defined by the Object Management Group (OMG). It facilitates real-time data exchange between publishers and subscribers in distributed systems. The package is widely used in applications requiring reliable and efficient data communication. However, prior to versions 2.11.0, 2.10.2, 2.9.2, and 2.6.5, Fast DDS was susceptible to a critical vulnerability that could lead to application crashes under certain conditions.
Vulnerability Detail
The vulnerability arises from a data submessage sent to the PDP port that triggers an unhandled 'BadParamException' in the fastcdr library. This exception is not managed properly, resulting in a crash of the Fast DDS application. The potential ramifications include service interruptions and loss of data integrity, particularly in systems relying on real-time data distribution. The vulnerability is classified with a CVSS score of 8.2, indicating a high severity level.
How To Fix
No fixed version is published for this vulnerability.
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Workaround
As a temporary workaround, users can avoid sending specific data submessages that may trigger the 'BadParamException'. However, this is not a permanent solution and updating to the patched version is strongly recommended.
Conclusion
In summary, the Fast DDS package has a critical vulnerability that can lead to application crashes due to an unhandled exception. It is essential for users to update to the patched versions to mitigate risks and ensure the reliability of their applications. Utilizing tools like Vulert can help monitor and alert for such vulnerabilities in real-time.
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FAQ
The vulnerability involves an unhandled exception that can cause the Fast DDS application to crash when specific data submessages are sent.
You can check if your application is affected by using the Vulert playground at Vulert Scanner, which allows you to monitor vulnerabilities without requiring installation.
Failure to address this vulnerability may lead to application crashes, service interruptions, and potential data loss in systems relying on Fast DDS.
Yes, patched versions of Fast DDS are available. Users should update to versions 2.11.0, 2.10.2, 2.9.2, or 2.6.5.
The CVSS score of this vulnerability is 8.2, indicating a high severity level.
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