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://nvd.nist.gov/vuln/detail/CVE-2023-33242
• https://eprint.iacr.org/2017/552.pdf
• https://github.com/fireblocks-labs/mpc-ecdsa-attacks-23
• https://github.com/fireblocks-labs/zengo-lindell17-exploit-poc
• https://www.fireblocks.com/blog/lindell17-abort-vulnerability-technical-report