Out-of-bounds Read in Shapeshift Keepkey
CVE-2023-27892
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.
Vulnerability class: Buffer Overflow
EPSS: 0.005 (38.1th percentile) — read the EPSS interpretation.
CVSS v3 metric
CVSS v3 base score 3.8 (Low). Vector: CVSS:3.1/AV:P/AC:H/PR:H/UI:N/S:U/C:H/I:N/A:N.
Affected products
- Shapeshift Keepkey
- Shapeshift Keepkey_firmware
- N/a — versions n/a
Weakness classification (CWE)
References
- cve@mitre.org (Patch)
- cve@mitre.org (Exploit, Third Party Advisory)
Frequently asked questions
- What is CVE-2023-27892?
- CVE-2023-27892 is a low-severity vulnerability in Shapeshift Keepkey, classified under Out-of-bounds Read. CVSS score: 3.8/10. Published 2023-05-02.
- How severe is CVE-2023-27892?
- Low severity. CVSS v3 base score is 3.8 out of 10.