CVE-2023-33242

EUVD-2023-37411
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.
Injection
ProviderTypeBase ScoreAtk. VectorAtk. ComplexityPriv. RequiredVector
NISTPrimary
9.6 CRITICAL
NETWORK
LOW
LOW
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:N
HalbornCNA
9.6 CRITICAL
NETWORK
LOW
LOW
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:N
Base Score
CVSS 3.x
EPSS Score
Percentile: 90%
Affected Products (NVD)
VendorProductVersion
lindell17_projectlindell17
-
𝑥
= Vulnerable software versions
Common Weakness Enumeration
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/