{"cve":"CVE-2022-47930","nvd":{"published":"2023-04-21T18:15:07.377","modified":"2026-06-17T05:14:27.587","status":"Modified","description":"An issue was discovered in IO FinNet tss-lib before 2.0.0. The parameter ssid for defining a session id is not used through the MPC implementation, which makes replaying and spoofing of messages easier. In particular, the Schnorr proof of knowledge implemented in sch.go does not utilize a session id, context, or random nonce in the generation of the challenge. This could allow a malicious user or an eavesdropper to replay a valid proof sent in the past.","cvss_v4":null,"cvss_v3":{"version":"3.1","vector":"CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:N","score":6.8},"cwes":["CWE-294"],"references":["https://github.com/IoFinnet/tss-lib/releases/tag/v2.0.0","https://medium.com/%40iofinnet/security-disclosure-for-ecdsa-and-eddsa-threshold-signature-schemes-4e969af7155b","https://github.com/IoFinnet/tss-lib/releases/tag/v2.0.0","https://medium.com/%40iofinnet/security-disclosure-for-ecdsa-and-eddsa-threshold-signature-schemes-4e969af7155b"],"products":["iofinnet:tss-lib"],"source":"nvd","synced_at":"2026-10-19T21:38:05.473481323+00:00"},"epss":{"cve":"CVE-2022-47930","score":0.00523,"percentile":0.44398,"date":"2026-10-31"},"kev":null,"osv":[{"id":"GHSA-c58h-qv6g-fw74","url":"https://osv.dev/vulnerability/GHSA-c58h-qv6g-fw74","summary":"IO FinNet tss-lib vulnerable to replay attacks involving proofs","modified":"2025-02-05T20:27:15.746663Z","packages":[{"ecosystem":"Go","name":"github.com/bnb-chain/tss-lib","purl":"pkg:golang/github.com/bnb-chain/tss-lib","ranges":["<2.0.0"],"fixed":["2.0.0"]},{"ecosystem":"Go","name":"github.com/binance-chain/tss-lib","purl":"pkg:golang/github.com/binance-chain/tss-lib","ranges":["<2.0.0"],"fixed":["2.0.0"]}]},{"id":"GO-2023-1867","url":"https://osv.dev/vulnerability/GO-2023-1867","summary":"Replay attacks involving proofs in github.com/bnb-chain/tss-lib","modified":"2025-02-06T17:49:57Z","packages":[{"ecosystem":"Go","name":"github.com/bnb-chain/tss-lib","purl":"pkg:golang/github.com/bnb-chain/tss-lib","ranges":["all versions"],"fixed":[]},{"ecosystem":"Go","name":"github.com/binance-chain/tss-lib","purl":"pkg:golang/github.com/binance-chain/tss-lib","ranges":["all versions"],"fixed":[]}]}],"attribution":["This product uses the NVD API but is not endorsed or certified by the NVD.","EPSS scores: FIRST Exploit Prediction Scoring System, https://www.first.org/epss","Known exploited vulnerabilities: CISA Known Exploited Vulnerabilities Catalog, https://www.cisa.gov/known-exploited-vulnerabilities-catalog","Package advisories: OSV (https://osv.dev), from the GitHub Advisory Database, PyPA, Go, RustSec and other ecosystem databases, under CC-BY 4.0 or CC0","CVE records: the CVE Program's CVE List (https://www.cve.org), under its terms of use (https://www.cve.org/Legal/TermsOfUse). CVE is a registered trademark of The MITRE Corporation; this product is not affiliated with the CVE Program."]}