Vulnerability in Nv-Websocket-Client Project
CVE-2017-1000209
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.
Vulnerability class: Improper Certificate Validation
EPSS: 0.007 (47.9th percentile) — read the EPSS interpretation.
CVSS v3 metric
CVSS v3 base score 5.9 (Medium). Vector: CVSS:3.0/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:N/A:N.
Affected products
- Nv-websocket-client_project Nv-websocket-client
- N/a — versions n/a
Weakness classification (CWE)
Public proof-of-concept exploits
References
- cve@mitre.org (x_refsource_CONFIRM, Third Party Advisory)
Frequently asked questions
- What is CVE-2017-1000209?
- CVE-2017-1000209 is a medium-severity vulnerability in Nv-Websocket-Client Project, classified under Improper Certificate Validation. CVSS score: 5.9/10. Published 2017-11-17.
- How severe is CVE-2017-1000209?
- Medium severity. CVSS v3 base score is 5.9 out of 10.
- Is CVE-2017-1000209 known to be exploited?
- 5 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.