CVE-2019-18671 Explained : Impact and Mitigation
Learn about CVE-2019-18671 affecting ShapeShift KeepKey hardware wallet firmware version 6.2.2 and earlier. Find out the impact, affected systems, exploitation method, and mitigation steps.
The ShapeShift KeepKey hardware wallet firmware version 6.2.2 and earlier had a vulnerability in its USB packet handling, potentially leading to out-of-bounds writes and code execution.
Understanding CVE-2019-18671
This CVE relates to a security flaw in the ShapeShift KeepKey hardware wallet firmware that could be exploited by unauthenticated attackers through WebUSB.
What is CVE-2019-18671?
The vulnerability in the ShapeShift KeepKey hardware wallet firmware version 6.2.2 and earlier allowed for out-of-bounds writes in the .bss segment via manipulated USB messages, posing a risk of code execution or other adverse effects.
The Impact of CVE-2019-18671
The vulnerability could be exploited remotely by unauthenticated attackers, potentially leading to unauthorized code execution or other malicious activities.
Technical Details of CVE-2019-18671
This section provides more in-depth technical insights into the CVE.
Vulnerability Description
Insufficient checks in the USB packet handling of the ShapeShift KeepKey hardware wallet firmware version 6.2.2 and earlier could result in out-of-bounds writes in the .bss segment through crafted messages, enabling code execution or other impacts.
Affected Systems and Versions
- Product: ShapeShift KeepKey hardware wallet
- Vendor: ShapeShift
- Versions affected: Firmware version 6.2.2 and earlier
Exploitation Mechanism
The vulnerability could be triggered by unauthenticated attackers sending manipulated messages through the WebUSB interface, potentially leading to out-of-bounds writes and code execution.
Mitigation and Prevention
Protecting systems from CVE-2019-18671 is crucial to prevent potential security breaches.
Immediate Steps to Take
- Update the firmware to the latest version provided by ShapeShift.
- Avoid connecting the KeepKey hardware wallet to untrusted devices.
- Regularly monitor for any suspicious activity on the device.
Long-Term Security Practices
- Implement strong access controls and authentication mechanisms.
- Conduct regular security audits and assessments of the hardware wallet.
Patching and Updates
- Stay informed about security updates and patches released by ShapeShift.