{"id":"CVE-2023-33242","aliases":["EUVD-2023-37411","GHSA-7rw5-c532-37cv"],"status":"published","title":"Lindell17 TSS Abort Mishandling","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.","severity":{"version":"3.1","score":9.6,"vector":"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:N","level":"critical","assessor":"cna","from":"cve"},"epss":{"day":"2026-11-09","score":0.01506,"percentile":0.74557,"model":"v2026.06.15"},"facts":{"in_kev":false,"known_exploited":false,"public_exploit":true,"fix_available":false},"cwes":["CWE-74"],"published":"2023-08-09T21:01:37Z","modified":"2026-06-17T06:01:23Z","exploits":[{"source":"pocgithub","id":"d0rb/CVE-2023-33242","title":"d0rb/CVE-2023-33242","date":"2023-08-15","url":"https://github.com/d0rb/CVE-2023-33242"}],"products":[{"vendor":"lindell tss implementations","product":"wallet"},{"vendor":"lindell17_project","product":"lindell17"},{"vendor":"vivo","product":"wallet"}],"references":[{"url":"https://www.fireblocks.com/blog/lindell17-abort-vulnerability-technical-report/","tags":["x_transferred","Third Party Advisory"]},{"url":"https://github.com/fireblocks-labs/mpc-ecdsa-attacks-23","tags":["x_transferred","Exploit"]},{"url":"https://github.com/fireblocks-labs/zengo-lindell17-exploit-poc","tags":["x_transferred","Exploit"]},{"url":"https://eprint.iacr.org/2017/552.pdf","tags":["x_transferred","Exploit","Third Party Advisory"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2023-33242"},{"url":"https://www.fireblocks.com/blog/lindell17-abort-vulnerability-technical-report"},{"url":"https://github.com/advisories/GHSA-7rw5-c532-37cv"}],"sources":{"cve":[{"id":"CVE-2023-33242","title":"Lindell17 TSS Abort Mishandling","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.","status":"published","published":"2023-08-09T21:01:37.417Z","modified":"2024-10-10T12:47:35.497Z","cvss":[{"version":"3.1","score":9.6,"vector":"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:N","level":"critical","assessor":"cna"}],"updated_at":"2026-11-02T14:35:34.170609Z"}],"euvd":[{"id":"EUVD-2023-37411","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.","status":"published","published":"2023-08-09T21:01:37Z","modified":"2024-10-10T12:47:35Z","cvss":[{"version":"3.1","score":9.6,"vector":"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:N","level":"critical"}],"updated_at":"2026-11-03T00:27:42.031825Z"}],"ghsa":[{"id":"GHSA-7rw5-c532-37cv","title":"Crypto wallets implementing the Lindell17 TSS protocol might allow an attacker to extract the...","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.","status":"published","published":"2023-08-10T00:30:52Z","modified":"2024-04-04T06:46:00Z","cvss":[{"version":"3.1","score":9.6,"vector":"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:N","level":"critical"}],"cwes":["CWE-74"],"updated_at":"2026-11-02T14:56:45.438001Z"}],"nvd":[{"id":"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.","status":"published","published":"2023-08-09T22:15:11.18Z","modified":"2026-06-17T06:01:23.44Z","cvss":[{"version":"3.1","score":9.6,"vector":"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:N","level":"critical","assessor":"secondary"},{"version":"3.1","score":8.1,"vector":"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:N","level":"high","assessor":"primary"}],"cwes":["CWE-74"],"updated_at":"2026-11-02T14:08:22.812138Z"}]}}