CVE-2019-19193 : Security Advisory and Response
Learn about CVE-2019-19193, a vulnerability in Bluetooth Low Energy peripheral on Texas Instruments devices, allowing attackers to cause denial of service. Find mitigation steps and affected versions here.
A vulnerability exists in the implementation of Bluetooth Low Energy peripheral on Texas Instruments SIMPLELINK-CC2640R2-SDK up to version 3.30.00.20 and BLE-STACK up to version 1.5.0 prior to Q4 2019 for CC2640R2 and CC2540/1 devices. Attackers within radio range can exploit this flaw by sending a specially crafted packet, causing a denial of service (crash) on the targeted device.
Understanding CVE-2019-19193
This CVE describes a vulnerability in Bluetooth Low Energy peripheral implementation on specific Texas Instruments devices.
What is CVE-2019-19193?
The vulnerability allows attackers within radio range to cause a denial of service on affected devices by sending a crafted packet.
The Impact of CVE-2019-19193
The vulnerability can lead to a denial of service (crash) on the targeted device, potentially disrupting its normal operation.
Technical Details of CVE-2019-19193
This section provides more technical insights into the CVE.
Vulnerability Description
The flaw arises from the improper restriction of the advertisement connection request packet on reception, enabling attackers to exploit the vulnerability.
Affected Systems and Versions
- Texas Instruments SIMPLELINK-CC2640R2-SDK up to version 3.30.00.20
- BLE-STACK up to version 1.5.0 prior to Q4 2019 for CC2640R2 and CC2540/1 devices
Exploitation Mechanism
Attackers within radio range can exploit the vulnerability by sending a specially crafted packet, triggering a denial of service (crash) on the targeted device.
Mitigation and Prevention
Protecting systems from this vulnerability requires immediate actions and long-term security practices.
Immediate Steps to Take
- Apply patches or updates provided by Texas Instruments to address the vulnerability.
- Implement network segmentation to limit exposure to potential attackers.
Long-Term Security Practices
- Regularly update firmware and software to ensure the latest security patches are in place.
- Conduct regular security assessments and penetration testing to identify and address vulnerabilities.
Patching and Updates
Ensure that the affected systems are updated with the latest patches and versions to mitigate the risk of exploitation.