CVE-2023-27892
Last modified
CVE-2023-27892 is a medium-severity vulnerability rated 5.7/10 on the CVSS scale. 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. EPSS estimates a 0.47% chance of exploitation in the next 30 days.
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.
Metrics
CVSS:3.1/AV:P/AC:H/PR:N/UI:N/S:U/C:H/I:N/A:H
Weakness Enumeration
Affected Software
| Vendor | Product | Versions |
|---|---|---|
| Shapeshift | Keepkey Firmware | >= 7.5.2, < 7.7.0 |
References
- https://blog.inhq.net/posts/keepkey-CVE-2023-27892/Exploit, Third Party Advisory
- https://blog.inhq.net/posts/keepkey-CVE-2023-27892/Exploit, Third Party Advisory
Timeline
- Published
- Last Modified
- Status
- Modified
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