CVE-2023-27892
02.05.2023, 21:15
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.
| Vendor | Product | Version |
|---|---|---|
| shapeshift | keepkey_firmware | 7.5.2 ≤ 𝑥 < 7.7.0 |
𝑥
= Vulnerable software versions
Common Weakness Enumeration
- CWE-125 - Out-of-bounds ReadThe software reads data past the end, or before the beginning, of the intended buffer.
- CWE-120 - Buffer Copy without Checking Size of Input ('Classic Buffer Overflow')The program copies an input buffer to an output buffer without verifying that the size of the input buffer is less than the size of the output buffer, leading to a buffer overflow.