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Secret information leak via USB Descriptors

Reported on January 2, 2019

The attack used specialized hardware to inject a fault into the comparison function in the USB stack. When timed properly, an attacker could trick USB stack into returning sensitive data via USB in the USB descriptor.

Fixed in firmwares 1.8.0 for Model One (22f37e8) and 2.1.0 for Model T (828ba7b).

Read more at our blog or at Colin's.

Reported by Colin O'Flynn

Trezor Model One, Trezor Model T

Resolved vulnerabilities

Reported by community. Investigated. Resolved. Because your security is never optional.