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.)
{
"cwe_ids": [
"CWE-203"
],
"github_reviewed": true,
"github_reviewed_at": "2025-02-05T19:43:31Z",
"nvd_published_at": "2023-04-21T18:15:07Z",
"severity": "HIGH"
}