Android 6.0 has an authentication bypass for attackers with root and physical access. Cryptographic authentication tokens (AuthTokens) used by the Trusted Execution Environment (TEE) are protected by a weak challenge. This allows adversaries to replay previously captured responses and use the TEE without authenticating. All apps using authentication-gated cryptography are vulnerable to this attack, which was confirmed on the LG Nexus 5X.
2017-07-17T13:18:05.623
2025-04-20T01:37:25.860
Deferred
CVSSv3.0: 6.2 (MEDIUM)
AV:L/AC:L/Au:N/C:C/I:C/A:C
3.9
10.0