io.finnet tss-lib before 2.0.0 can leak the lambda value of a private key via a timing side-channel attack because it relies on Go big.Int, which is not constant time for Cmp, modular exponentiation, or modular inverse. An example leak is in crypto/paillier/paillier.go. (bnb-chain/tss-lib and thorchain/tss are also affected.)
{ "nvd_published_at": "2023-04-21T18:15:07Z", "github_reviewed": true, "github_reviewed_at": "2025-02-05T19:43:31Z", "severity": "HIGH", "cwe_ids": [ "CWE-203" ] }