by Kastro
Paper/Archive/CVE-2023-33242

CVE-2023-33242

Lindell TSS Implementations Wallet — Lindell17 TSS Abort Mishandling

EPSS 2%public exploitCVSS 9.6
critical.is priorityof 100
54
CVSS 9.6 (CNA)9.6 / 10 × 3028.8Not in CISA KEV+300.0EPSS percentile 74.4.744 × 2014.9Exploit: SSVC poc+1010.0SSVC exploitation: poc+100.0
Description · from the CVE record

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.

Affected

ProductAffectedFixed inSource
Wallet17–CNA

Scores by source

Halborn (CNA)9.6CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:N
CISA ADPSSVCExploitation: poc · Automatable: no · Technical impact: total

References

refeprint.iacr.org/2017/552.pdfreffireblocks.com/blog/lindell17-abort-vulnerability-technical-reportrefgithub.com/fireblocks-labs/mpc-ecdsa-attacks-23refgithub.com/fireblocks-labs/zengo-lindell17-exploit-poc