CVE-2021-31787 : Vulnerability Insights and Analysis
Discover how CVE-2021-31787 affects Actions ATS2815 chipsets due to insecure handling of LMP responses. Learn about the impact, technical details, affected systems, and mitigation steps.
Bluetooth Classic implementation on Actions ATS2815 chipsets is vulnerable to a denial of service attack due to improper handling of unsolicited LMP responses. Attackers within radio range can exploit this vulnerability to flood devices with LMP_features_res packets, leading to a shutdown.
Understanding CVE-2021-31787
This section provides insights into the vulnerability and its impact.
What is CVE-2021-31787?
The vulnerability in the Bluetooth Classic implementation on Actions ATS2815 chipsets allows attackers in close proximity to carry out a denial of service attack by overwhelming the target device with malicious packets.
The Impact of CVE-2021-31787
The impact of this vulnerability is significant as it can lead to the shutdown of devices, disrupting their normal operation and potentially causing service outages.
Technical Details of CVE-2021-31787
Here, we dive into the technical aspects of the vulnerability.
Vulnerability Description
The vulnerability arises from the insufficient handling of continuous unsolicited LMP responses, enabling malicious actors to exploit the flaw and launch denial of service attacks.
Affected Systems and Versions
Actions ATS2815 chipsets are specifically affected by this vulnerability in their Bluetooth Classic implementation.
Exploitation Mechanism
By flooding the targeted device with LMP_features_res packets, attackers within radio range can trigger a denial of service condition, leading to the shutdown of the device.
Mitigation and Prevention
In this section, we explore ways to mitigate and prevent exploitation of CVE-2021-31787.
Immediate Steps to Take
Users are advised to implement security best practices, such as keeping devices up to date and avoiding exposure to potentially vulnerable environments.
Long-Term Security Practices
Establishing network segmentation, monitoring for unusual traffic patterns, and staying informed about security advisories are crucial for long-term security.
Patching and Updates
Vendors should release patches to address the vulnerability promptly, and users must apply these patches to safeguard their devices against potential attacks.