CVE-2019-17061 Explained : Impact and Mitigation

Bluetooth Low Energy (BLE) stack on Cypress PSoC 4 through 3.62 devices has a vulnerability that allows attackers to exploit memory contents and induce abnormal behavior.

Understanding CVE-2019-17061

The vulnerability in the BLE stack implementation on Cypress PSoC devices can lead to various security risks.

What is CVE-2019-17061?

The flaw in the BLE stack implementation on Cypress PSoC devices allows attackers within radio range to manipulate packets and trigger malicious actions.

The Impact of CVE-2019-17061

Attackers can induce deadlocks and abnormal behavior in the BLE state machine.
Exploitation of a buffer overflow is possible by crafting a malicious BLE Link Layer frame.

Technical Details of CVE-2019-17061

The technical aspects of the vulnerability provide insights into its nature and implications.

Vulnerability Description

The flaw in the BLE stack does not adequately limit the BLE Link Layer header, allowing execution of specific memory contents.

Affected Systems and Versions

Product: Cypress PSoC 4 through 3.62 devices
Vendor: Cypress
Versions: All versions are affected

Exploitation Mechanism

Attackers exploit the vulnerability by sending packets with a Link Layer ID (LLID) of zero, enabling them to manipulate memory contents and trigger malicious actions.

Mitigation and Prevention

Protecting systems from CVE-2019-17061 requires immediate actions and long-term security practices.

Immediate Steps to Take

Update the BLE stack implementation on Cypress PSoC devices to the latest secure version.
Implement network segmentation to limit exposure to potential attacks.

Long-Term Security Practices

Regularly monitor and audit BLE communications for unusual activities.
Train employees on recognizing and reporting suspicious BLE activities.

Patching and Updates

Stay informed about security updates and patches released by Cypress for the affected devices.