CVE-2017-1000209
nv-websocket-client allows attackers to spoof SSL/TLS servers via an arbitrary valid certificate
5.9
MEDIUM
CVSS 3.1
EPSS 0.12%
Description
The Java WebSocket client nv-websocket-client does not verify that the server hostname matches a domain name in the subject's Common Name (CN) or subjectAltName field of the X.509 certificate, which allows man-in-the-middle attackers to spoof SSL/TLS servers via an arbitrary valid certificate.
How to fix CVE-2017-1000209
To remediate CVE-2017-1000209, upgrade the affected package to a fixed version below.
- —upgrade to 2.1 or later
Is CVE-2017-1000209 being exploited?
Low — EPSS is 0.1%, meaning exploitation activity has not been observed at scale.
Affected packages (1)
- from 0, < 2.1
CVSS scores
| Source | Version | Severity | Vector |
|---|---|---|---|
| osv | CVSS 3.1 | MEDIUM5.9 | CVSS:3.0/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:N/A:N |