Vulnerability CVE-2023-33242
Published: 2023-08-09   Modified: 2023-08-10

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.

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