CVE-2023-27892 (keepkey_firmware) | allinfosecnews.com

May 2, 2023, 9:15 p.m. |

National Vulnerability Database web.nvd.nist.gov

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.

access attackers bip39 buffer buffer overflow crash cve device extract firmware flaws global hardware length memory messages overflow physical pin screen secret unlocked wallet

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