Vulnerability Details 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.
Exploit prediction scoring system (EPSS) score
EPSS Score 0.035
EPSS Ranking 87.1%
CVSS Severity
CVSS v3 Score 9.6
References
- 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/
- 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/
Products affected by CVE-2023-33242
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cpe:2.3:a:lindell17_project:lindell17:-