CVE-2023-39948 : Security Advisory and Response

FastDDS Uncaught fastcdr Exception Vulnerability

Understanding CVE-2023-39948

This CVE involves a vulnerability in the eProsima Fast DDS software that allows remote attackers to crash Fast DDS processes.

What is CVE-2023-39948?

The CVE-2023-39948 vulnerability in eProsima Fast DDS is related to the failure to catch the

BadParamException

thrown by Fast CDR prior to versions 2.10.0 and 2.6.5, leading to potential remote crashes of Fast DDS processes. The issue has been patched in versions 2.10.0 and 2.6.5.

The Impact of CVE-2023-39948

The impact of this vulnerability is significant as it can be exploited remotely to crash Fast DDS processes, potentially causing service disruptions or denial-of-service situations. Organizations using affected versions are advised to apply the necessary patches immediately.

Technical Details of CVE-2023-39948

This section provides more specific technical details related to the CVE.

Vulnerability Description

The vulnerability arises from the failure to handle the

BadParamException

in Fast DDS, which can be exploited by attackers to remotely crash the affected software.

Affected Systems and Versions

The vulnerability affects eProsima Fast DDS versions prior to 2.10.0 and 2.6.5. Systems running these versions are at risk of remote exploitation.

Exploitation Mechanism

Attackers can exploit this vulnerability remotely by triggering the

BadParamException

and causing Fast DDS processes to crash, potentially leading to service disruptions.

Mitigation and Prevention

It is crucial for organizations to take immediate steps to mitigate the risks associated with CVE-2023-39948.

Immediate Steps to Take

Organizations should update their Fast DDS software to versions 2.10.0 or 2.6.5, which contain the necessary patches to address this vulnerability.

Long-Term Security Practices

Regularly monitor for security updates and advisories from eProsima to stay informed about potential vulnerabilities and patches.

Patching and Updates

Promptly apply software updates and patches provided by eProsima to ensure the security and stability of Fast DDS installations.