Technical Advisory

Through sharp, technical and insightful analysis, the Payatu Team is constantly on the lookout for vulnerabilities and threats. This section exhibits a few of our findings.

Technical Advisory

Through sharp, technical and insightful analysis, the Payatu Team is constantly on the lookout for vulnerabilities and threats. This section exhibits a few of our findings.

Open Serial debug port Allows Dumping, and re- flashing Firmware in Fastrack reflex 2.0 activity tracker

Vulnerability

Open Serial debug port Allows Dumping, and re- flashing Firmware

Vulnerability Description

It was identified in analyzing the PCB, that the SWD (Serial Wire Debug) the port was open and it gives access to the dumping and re-flashing the firmware. an attacker can dump the firmware and flash custom malicious firmware and brick the device.

CVE-ID

CVE-2021-35954.

Vendor

Fastrack

Product

Fastrack Reflex 2.0 Activity Tracker

Disclosure Timeline

17 Nov 2020 reported to the vendor

30th June 2021 No response from the vendor and moving forward to public disclosure.

Credit

Shakir Zari

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