CVE-2023-27892

CVSS 3.8 LOWEPSS 0.5%CWE-120

Vexday Risk Score

8Low

SSVC decision (CISA)

Track

No exploitation signal → monitor

CVSS 3.8EPSS 0.5%KEV nãoPoC —Nuclei —Metasploit —Patch —

Lifecycle

02 May 2023Published on NVD

Recommendation: Monitor — no exploitation signal at the moment.

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.

CVSS:3.1/AC:H/AV:P/A:N/C:H/I:N/PR:H/S:U/UI:N

Affected products

n/a · n/a

References

https://blog.inhq.net/posts/keepkey-CVE-2023-27892/https://github.com/keepkey/keepkey-firmware/pull/337