cve/2023/CVE-2023-27892.md

### [CVE-2023-27892](https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2023-27892)
![](https://img.shields.io/static/v1?label=Product&message=n%2Fa&color=blue)
![](https://img.shields.io/static/v1?label=Version&message=n%2Fa&color=blue)
![](https://img.shields.io/static/v1?label=Vulnerability&message=n%2Fa&color=brighgreen)

### Description

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.

### POC

#### Reference
- https://blog.inhq.net/posts/keepkey-CVE-2023-27892/

#### Github
No PoCs found on GitHub currently.