CVE-2022-47930: Iofinnet Tss-Lib

Medium severity, CVSS 6.8. EPSS: 0.5% chance of exploitation in the next 30 days.

An issue was discovered in IO FinNet tss-lib before 2.0.0. The parameter ssid for defining a session id is not used through the MPC implementation, which makes replaying and spoofing of messages easier. In particular, the Schnorr proof of knowledge implemented in sch.go does not utilize a session id, context, or random nonce in the generation of the challenge. This could allow a malicious user or an eavesdropper to replay a valid proof sent in the past.

Affected products

• Iofinnet Tss-Lib: before 2.0.0 (fixed in 2.0.0)

Published 2023-04-21. Last modified 2026-06-17.