bnb-chain/tss-lib · Security
IO FinNet tss-lib vulnerable to timing attack from non-constant time scalar arithmetic
- GHSA ID
- GHSA-mjqv-xhgm-gx8c
- CVE ID
- CVE-2023-26557
- Severity
- high
- Published
- Updated
- CVSS
- 7.5 · CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N
- CVSS v3
- 7.5 · CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N
Description
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.)
CWEs
- CWE-203 · Observable Discrepancy
References
- https://nvd.nist.gov/vuln/detail/CVE-2023-26557 ↗
- https://github.com/IoFinnet/tss-lib/releases/tag/v2.0.0 ↗
- https://github.com/bnb-chain/tss-lib/tree/v1.3.5 ↗
- https://gitlab.com/thorchain/tss/tss-lib/-/tags/v0.1.3 ↗
- https://medium.com/@iofinnet/security-disclosure-for-ecdsa-and-eddsa-threshold-signature-schemes-4e969af7155b ↗
- https://pkg.go.dev/vuln/GO-2023-1733 ↗
- https://github.com/advisories/GHSA-mjqv-xhgm-gx8c ↗