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.

Related CPE's

a

lindell17_project

lindell17

-

Vulnerable

References

https://eprint.iacr.org/2017/552.pdf

ExploitThird Party Advisory

https://github.com/fireblocks-labs/mpc-ecdsa-attacks-23

Exploit

https://github.com/fireblocks-labs/zengo-lindell17-exploit-poc

Exploit

https://www.fireblocks.com/blog/lindell17-abort-vulnerability-technical-report/

Third Party Advisory

Weaknesses

[email protected]

Primary
CWE-74

CVSS impact metrics

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

8.1 · High

  • CVSS V3.1

  • CVSS V3.0

  • CVSS V2.0

Information

Source identifier

[email protected]

Vulnerability status

Analyzed

Published

2023-08-09T22:15:11.180

11 months ago

Last modified

2023-08-25T15:06:14.247

11 months ago