CVE-2023-33242

HighCVSS 8.1/10Last modified Jun 17, 2026

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.

Metrics

CVSS 3.1 8.1/10CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:N

Weakness enumeration

CWE-74

Affected software

Vendor	Product	Versions
Lindell TSS Implementations	Wallet	17

References

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

Timeline

Published: Aug 9, 2023
Last modified: Jun 17, 2026
NVD status: Modified

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