GitHub Advisoryadvisory · Go

GHSA-mjqv-xhgm-gx8c IO FinNet tss-lib vulnerable to timing attack from non-constant time scalar arithmetic

HIGH Published 2023-04-21 Modified 2025-02-05 Official page ↗
Aliases
CVE-2023-26557
Ecosystem
Go
Packages
github.com/bnb-chain/tss-lib, github.com/binance-chain/tss-lib
Severity
High
CVSS vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N
Weaknesses
CWE-203
Reviewed
2025-02-05

Affected packages

• Go github.com/bnb-chain/tss-lib: < 1.3.6-0.20230324145555-bb6fb30bd3eb → fixed in 1.3.6-0.20230324145555-bb6fb30bd3eb • Go github.com/binance-chain/tss-lib: < 1.3.6-0.20230324145555-bb6fb30bd3eb → fixed in 1.3.6-0.20230324145555-bb6fb30bd3eb

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.)

Related

Alias · CVE (1)

  • CVE-2023-26557 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,… vulnerability

Weakness · CWE (1)

  • CWE-203 Observable Discrepancy weakness

References