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CVE-2023-26557

nvd nist
Published: Apr 21, 2023Modified: Jun 17, 2026

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7.5
Vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N
Exploitability: 3.9 / Impact: 3.6
Source: NVD

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.)

Affected (1)

Products: Iofinnet: Tss Lib
Iofinnet
1 product
Tss Lib
Configuration A
1 vulnerable
Vulnerable SoftwareAffected Versions
Tss Lib
Before 2.0.0

Related CWEs

CWE-203
Observable Discrepancy
The product behaves differently or sends different responses under different circumstances in a way that is observable to an unauthorized actor, which exposes security-relevant information about the state of the product, such as whether a particular operation was successful or not.

References (8)

Source: cve@mitre.org
Release Notes
Source: cve@mitre.org
Product
Source: cve@mitre.org
Release Notes
Source: cve@mitre.org
Source: af854a3a-2127-422b-91ae-364da2661108
Release Notes
Source: af854a3a-2127-422b-91ae-364da2661108
Product
Source: af854a3a-2127-422b-91ae-364da2661108
Release Notes
Source: af854a3a-2127-422b-91ae-364da2661108

Timeline

No history available yet.