{"id":"CVE-2023-26556","aliases":["GO-2023-1732"],"url":"https://o3.security/vulnerability/CVE-2023-26556","summary":"IO FinNet tss-lib vulnerable to timing attack from non-constant time scalar multiplication","details":"io.finnet tss-lib before 2.0.0 can leak a secret key via a timing side-channel attack because it relies on the scalar-multiplication implementation in Go crypto/elliptic, which is not constant time (there is an if statement in a loop). One leak is in ecdsa/keygen/round_2.go. (bnb-chain/tss-lib and thorchain/tss are also affected.)","published":"2023-04-21T18:30:24Z","modified":"2025-02-05T20:26:58.387986Z","cvss":{"score":9.1,"severity":"CRITICAL","vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:N"},"epss":null,"cisaKev":null,"exploitsKnown":0,"affectedPackages":[{"ecosystem":"Go","name":"github.com/bnb-chain/tss-lib","fixedVersion":"2.0.0"},{"ecosystem":"Go","name":"github.com/binance-chain/tss-lib","fixedVersion":"2.0.0"}],"fix":null,"references":[{"type":"ADVISORY","url":"https://nvd.nist.gov/vuln/detail/CVE-2023-26556"},{"type":"WEB","url":"https://github.com/bnb-chain/tss-lib/issues/44"},{"type":"WEB","url":"https://github.com/IoFinnet/tss-lib/releases/tag/v2.0.0"},{"type":"PACKAGE","url":"https://github.com/bnb-chain/tss-lib"},{"type":"WEB","url":"https://github.com/bnb-chain/tss-lib/releases/tag/v2.0.0"},{"type":"WEB","url":"https://github.com/bnb-chain/tss-lib/tree/v1.3.5"},{"type":"WEB","url":"https://gitlab.com/thorchain/tss/tss-lib/-/tags/v0.1.3"},{"type":"WEB","url":"https://medium.com/@iofinnet/security-disclosure-for-ecdsa-and-eddsa-threshold-signature-schemes-4e969af7155b"},{"type":"WEB","url":"https://pkg.go.dev/vuln/GO-2023-1732"}],"provenance":{"sources":["OSV.dev","FIRST.org (EPSS)"],"lastVerified":"2025-02-05T20:26:58.387986Z"}}