Overview
- Description
- 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.
- Source
- cve@mitre.org
- NVD status
- Modified
Risk scores
CVSS 3.1
- Type
- Primary
- Base score
- 6.8
- Impact score
- 5.2
- Exploitability score
- 1.6
- Vector string
- CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:N
- Severity
- MEDIUM
Weaknesses
- nvd@nist.gov
- CWE-294
Social media
- Hype score
- Not currently trending
Configurations
[
{
"nodes": [
{
"negate": false,
"cpeMatch": [
{
"criteria": "cpe:2.3:a:iofinnet:tss-lib:*:*:*:*:*:*:*:*",
"vulnerable": true,
"matchCriteriaId": "5A407DB0-D561-404E-941A-EF988ABB8BDB",
"versionEndExcluding": "2.0.0"
}
],
"operator": "OR"
}
]
}
]