Vulnerability in Lindell17 Project
CVE-2023-33242
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.
Published · last modified .
CVSS v3 metric
CVSS v3 base score 9.6 (Critical). Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:N.
EPSS exploit prediction
EPSS: 0.015 (73.4th percentile), scored .
Low probability of exploitation in the next 30 days, but still tracked. 73rd percentile — 73.4% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.015 · newest: 0.015 · change: 0.000
Affected products
- Lindell17 Project
- Lindell Tss Implementations Wallet — versions 17
Weakness classification (CWE)
Public proof-of-concept exploits
References
- www.fireblocks.com/blog/lindell17-abort-vulnerability-technical-report/ (Third Party Advisory)
- github.com/fireblocks-labs/mpc-ecdsa-attacks-23 (Exploit)
- github.com/fireblocks-labs/zengo-lindell17-exploit-poc (Exploit)
- eprint.iacr.org/2017/552.pdf (Exploit, Third Party Advisory)
Frequently asked questions
- What is CVE-2023-33242?
- CVE-2023-33242 is a critical-severity vulnerability in Lindell17 Project, classified under Improper Neutralization of Special Elements in Output Used by a Downstream Component (Injection). CVSS score: 9.6/10. Published 2023-08-09.
- How severe is CVE-2023-33242?
- Critical severity. CVSS v3 base score is 9.6 out of 10.
- Is CVE-2023-33242 known to be exploited?
- 3 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.