CVE-2019-19195 : What You Need to Know
Learn about CVE-2019-19195, a Bluetooth Low Energy vulnerability in Microchip Technology BluSDK Smart versions up to 6.2 for ATSAMB11 devices, allowing attackers to trigger denial of service. Find mitigation steps and preventive measures here.
Bluetooth Low Energy vulnerability in Microchip Technology BluSDK Smart
Understanding CVE-2019-19195
What is CVE-2019-19195?
The vulnerability in Microchip Technology BluSDK Smart versions up to 6.2 for ATSAMB11 devices allows attackers within radio range to exploit Bluetooth Low Energy implementation, leading to a denial of service (crash) by sending a crafted packet.
The Impact of CVE-2019-19195
This vulnerability enables attackers to crash affected devices, potentially disrupting operations and causing service unavailability.
Technical Details of CVE-2019-19195
Vulnerability Description
The flaw arises from the inadequate restriction of link-layer data length during reception, providing an avenue for attackers to exploit the Bluetooth Low Energy implementation.
Affected Systems and Versions
- Product: Microchip Technology BluSDK Smart
- Versions: Up to 6.2 for ATSAMB11 devices
Exploitation Mechanism
Attackers within radio range can trigger a denial of service by sending a carefully crafted packet to the vulnerable Bluetooth Low Energy implementation.
Mitigation and Prevention
Immediate Steps to Take
- Implement network segmentation to limit exposure to potential attackers
- Apply vendor-supplied patches or updates promptly
Long-Term Security Practices
- Regularly monitor and update firmware to address security vulnerabilities
- Conduct security assessments and penetration testing to identify and mitigate potential risks
Patching and Updates
Ensure timely installation of patches and updates provided by Microchip Technology to address the vulnerability.