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CVE-2023-33242
Lindell17 TSS Abort Mishandling
Critical9.6EPSS 1.5%
- Published
- Updated
- Reserved
- Assigned by
- Halborn
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.
Scores
| Scored by | CVSS | Score | Vector |
|---|---|---|---|
| HalbornCNA (assigner) | 3.1 | Critical9.6 | CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:N |
| NVDNVD · Modified | 3.1 | High8.1 | CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:N |
- EPSS (exploitation in 30 days)
- 1.5% · top 26% of all CVEs (6 Nov 2026)
- CISA SSVC
- Exploitation: poc · Automatable: no · Technical impact: total
Loading the EPSS history…
The list uses the assigner's score when there is one, then CISA's, then NVD's: Critical 9.6.
Weakness
- Private Key Exfiltration
- CWE-74 (opens in a new tab)All about CWE-74 and its CVEs
Affected products
Lindell TSS Implementations · Wallet
- affected 17
References (4)
- https://www.fireblocks.com/blog/lindell17-abort-vulnerability-technical-report/ (opens in a new tab)x_transferred
- https://github.com/fireblocks-labs/mpc-ecdsa-attacks-23 (opens in a new tab)x_transferred
- https://github.com/fireblocks-labs/zengo-lindell17-exploit-poc (opens in a new tab)x_transferred
- https://eprint.iacr.org/2017/552.pdf (opens in a new tab)x_transferred
Sources
The same CVE in the primary databases and aggregators, to check against.
- CVE.org record (opens in a new tab)
- CVE List JSON (GitHub) (opens in a new tab)
- NVD (opens in a new tab)
- FIRST EPSS (opens in a new tab)
- OSV.dev (opens in a new tab)
- GitHub Advisories (opens in a new tab)
- CIRCL Vulnerability-Lookup (opens in a new tab)
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[](https://trackcve.app/cve/CVE-2023-33242)Record last updated .