bnb-chain/tss-lib · Security
IO FinNet tss-lib vulnerable to timing attack from non-constant time scalar multiplication
- GHSA ID
- GHSA-3w84-4mjc-rjw7
- CVE ID
- CVE-2023-26556
- Severity
- critical
- Published
- Updated
- CVSS
- 9.1 · CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:N
- CVSS v3
- 9.1 · CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:N
Description
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.)
CWEs
- CWE-203 · Observable Discrepancy
References
- https://nvd.nist.gov/vuln/detail/CVE-2023-26556 ↗
- 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://github.com/bnb-chain/tss-lib/issues/44 ↗
- https://github.com/bnb-chain/tss-lib/releases/tag/v2.0.0 ↗
- https://pkg.go.dev/vuln/GO-2023-1732 ↗
- https://github.com/advisories/GHSA-3w84-4mjc-rjw7 ↗