CVE-2023-33242

Lindell17 TSS Abort Mishandling

State: Published
Severity: 9.6 Critical
Published: Aug 9, 2023
Updated: Oct 10, 2024
Reserved: May 19, 2023

Description

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.

Scores

CVSS	Score	Vector	Source
3.1	9.6 Critical	CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:N	Halborn

Weaknesses

The record names no weakness.

Affected Products

Product	Versions
WalletLindell TSS Implementations	17Affected

References

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

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