CVE-2021-38425 : What You Need to Know

This article provides detailed information about CVE-2021-38425, a vulnerability in eProsima Fast DDS that could result in denial-of-service conditions and information exposure.

Understanding CVE-2021-38425

This section dives into the specifics of the CVE-2021-38425 vulnerability in eProsima Fast DDS.

What is CVE-2021-38425?

eProsima Fast DDS versions prior to 2.4.0 (#2269) are vulnerable to exploitation through specially crafted packets, leading to denial-of-service and information exposure.

The Impact of CVE-2021-38425

The vulnerability has a CVSS base score of 7.5, with a high availability impact, affecting the network and potentially causing service disruption and data exposure.

Technical Details of CVE-2021-38425

This section provides technical insights into the CVE-2021-38425 vulnerability.

Vulnerability Description

The vulnerability stems from insufficient control of network message volume, allowing attackers to flood devices with unwanted traffic.

Affected Systems and Versions

eProsima Fast DDS versions prior to 2.4.0 (#2269) are affected, leaving them susceptible to exploitation.

Exploitation Mechanism

Attackers can exploit this vulnerability by sending specially crafted packets to overwhelm target devices with malicious traffic.

Mitigation and Prevention

In this section, you will find steps to mitigate and prevent exploitation of CVE-2021-38425.

Immediate Steps to Take

eProsima recommends users apply the latest patches for Fast DDS to address the vulnerability and protect their systems.

Long-Term Security Practices

Implementing network monitoring, access controls, and regular security updates can enhance the overall security posture against such vulnerabilities.

Patching and Updates

Regularly updating Fast DDS to the latest version is crucial for addressing known vulnerabilities and strengthening overall system security.