CVE-2023-33242

Crypto wallets implementing the Lindell17 TSS protocol might allow an attacker to extract the full ECDSA private key by exfiltrating a single bit in every signature attempt (256 in total) because of not adhering to the paper's security proof's assumption regarding handling aborts after a failed signature.

CVSS v3 8.1 HIGH

8.1^/10

CVSS v3 : HIGH

Vector :

Exploitability : 2.8 / Impact : 5.2

Attack Vector NETWORK

Attack Complexity LOW

Privileges Required LOW

User Interaction NONE

Confidentiality Impact HIGH

Integrity Impact HIGH

Availability Impact NONE

Scope UNCHANGED

References

Link	Resource
https://eprint.iacr.org/2017/552.pdf	Exploit Third Party Advisory
https://github.com/fireblocks-labs/mpc-ecdsa-attacks-23	Exploit
https://github.com/fireblocks-labs/zengo-lindell17-exploit-poc	Exploit
https://www.fireblocks.com/blog/lindell17-abort-vulnerability-technical-report/	Third Party Advisory

Configurations

Configuration 1 (hide)

cpe:2.3:a:lindell17_project:lindell17:-:*:*:*:*:*:*:*

History

No history.

Information

Published : 2023-08-09 22:15

Updated : 2023-08-25 15:06

NVD link : CVE-2023-33242

Mitre link : CVE-2023-33242

CVE.ORG link : CVE-2023-33242

JSON object : View

Products Affected

lindell17_project

lindell17

CWE

CWE-74

Improper Neutralization of Special Elements in Output Used by a Downstream Component ('Injection')

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