cve/2023/CVE-2023-33242.md

CVE-2023-33242

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.

POC

Reference

• https://github.com/fireblocks-labs/zengo-lindell17-exploit-poc
• https://www.fireblocks.com/blog/lindell17-abort-vulnerability-technical-report/

Github

• https://github.com/d0rb/CVE-2023-33242
• https://github.com/dcar2121/Acme
• https://github.com/nomi-sec/PoC-in-GitHub