CVEvulnerability
CVE-2023-26556
9.1 CRITICAL
Official page ↗
- Status
- Modified
- Published
- 2023-04-21
- Last modified
- 2026-06-17
- Assigner
- [email protected]
- CVSS 3.1 ([email protected])
- 9.1 CRITICAL — CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:N
- CVSS 3.1 (134c704f-9b21-4f2e-91b3-4a467353bcc0)
- 9.1 CRITICAL — CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:N
- Weaknesses
- CWE-203
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.)
Affected configurations
• iofinnet tss-lib (< 2.0.0)
Related
Weakness · CWE (1)
- CWE-203 Observable Discrepancy weakness
References
- https://github.com/IoFinnet/tss-lib/releases/tag/v2.0.0 Release Notes
- https://github.com/bnb-chain/tss-lib/tree/v1.3.5 Product
- https://gitlab.com/thorchain/tss/tss-lib/-/tags/v0.1.3 Release Notes
- https://medium.com/%40iofinnet/security-disclosure-for-ecdsa-and-eddsa-threshold-signature-schemes-4e969af7155b medium.com
- https://github.com/IoFinnet/tss-lib/releases/tag/v2.0.0 Release Notes
- https://github.com/bnb-chain/tss-lib/tree/v1.3.5 Product
- https://gitlab.com/thorchain/tss/tss-lib/-/tags/v0.1.3 Release Notes
- https://medium.com/%40iofinnet/security-disclosure-for-ecdsa-and-eddsa-threshold-signature-schemes-4e969af7155b medium.com