CVE-2023-27892 - Vulnerability Details - OpenCVE

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.

No CVSS v4.0

Attack Vector Physical

Attack Complexity High

Privileges Required High

Scope Unchanged

Confidentiality Impact High

Integrity Impact None

Availability Impact None

User Interaction None

No CVSS v3.0

No CVSS v2

This CVE is not in the KEV list.

The EPSS score is 0.00039.

Exploitation poc

Automatable no

Technical Impact partial

Vendors	Products
Shapeshift	Keepkey Keepkey Firmware

Configuration 1 [-]

AND

cpe:2.3:o:shapeshift:keepkey_firmware:*:*:*:*:*:*:*:*

cpe:2.3:h:shapeshift:keepkey:-:*:*:*:*:*:*:*

No data.

No data.

Advisories

Source	ID	Title
EUVD	EUVD-2023-31626	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.

Fixes

Solution

No solution given by the vendor.

Workaround

No workaround given by the vendor.

References

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

History

Thu, 30 Jan 2025 17:15:00 +0000

Type	Values Removed	Values Added
Weaknesses		CWE-120
Metrics		ssvc `{'options': {'Automatable': 'no', 'Exploitation': 'poc', 'Technical Impact': 'partial'}, 'version': '2.0.3'}`

MITRE

Status: PUBLISHED

Assigner: mitre

Published: 2023-05-02T00:00:00.000Z

Updated: 2025-01-30T16:42:38.016Z

Reserved: 2023-03-06T00:00:00.000Z

Link: CVE-2023-27892

Vulnrichment

Updated: 2024-08-02T12:23:30.527Z

NVD

Status : Modified

Published: 2023-05-02T21:15:09.337

Modified: 2025-01-30T17:15:13.877

Link: CVE-2023-27892

Redhat

No data.

OpenCVE Enrichment

No data.

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