CVE-2023-26556 (GCVE-0-2023-26556)
Vulnerability from cvelistv5 – Published: 2023-04-21 00:00 – Updated: 2025-02-05 14:43
VLAI
EPSS
VEX
Summary
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.)
Severity
9.1 (Critical)
SSVC
Exploitation: none
Automatable: yes
Technical Impact: total
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2025-02-05 14:43 UTC
CWE
- n/a
- CWE-203 - Observable Discrepancy
Assigner
References
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