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CVE-2023-27892
Good to know:
Date: May 1, 2023
Insufficient length checks in the ShapeShift KeepKey hardware wallet firmware before 7.7.0 allow a global buffer overflow via crafted messages. Flaws in cf_confirmExecTx() in ethereum_contracts.c can be used to reveal arbitrary microcontroller memory on the device screen or crash the device. With physical access to a PIN-unlocked device, attackers can extract the BIP39 mnemonic secret from the hardware wallet.
Language: C
Severity Score
Severity Score
Weakness Type (CWE)
Out-of-bounds Read
CWE-125Top Fix
CVSS v3.1
| Base Score: |
|
|---|---|
| Attack Vector (AV): | PHYSICAL |
| Attack Complexity (AC): | HIGH |
| Privileges Required (PR): | HIGH |
| User Interaction (UI): | NONE |
| Scope (S): | UNCHANGED |
| Confidentiality (C): | HIGH |
| Integrity (I): | NONE |
| Availability (A): | NONE |