CVE-2020-15133
8.0 · HIGHOverview
CVE-2020-15133 is a high-severity vulnerability affecting faye-websocket_project faye-websocket. It was published on July 31, 2020 and has a CVSS 3.1 base score of 8.0 (HIGH).
This vulnerability has a CVSS 3.1 base score of 8.0, rated HIGH. It can be exploited remotely over the network. No authentication or special privileges are required for exploitation.
Technical Description
In faye-websocket before version 0.11.0, there is a lack of certification validation in TLS handshakes. The `Faye::WebSocket::Client` class uses the `EM::Connection#start_tls` method in EventMachine to implement the TLS handshake whenever a `wss:` URL is used for the connection. This method does not implement certificate verification by default, meaning that it does not check that the server presents a valid and trusted TLS certificate for the expected hostname. That means that any `wss:` connection made using this library is vulnerable to a man-in-the-middle attack, since it does not confirm the identity of the server it is connected to. For further background information on this issue, please see the referenced GitHub Advisory. Upgrading `faye-websocket` to v0.11.0 is recommended.
Remediation
Check the references section for vendor advisories and patches from faye-websocket_project. Update faye-websocket to the latest patched version. If immediate patching is not possible, review the CVSS vector to understand the attack surface and apply compensating controls such as network segmentation or access restrictions.
Affected Products
| Vendor | Product | Versions | Status |
|---|---|---|---|
| faye-websocket_project | faye-websocket | >= 0, < 0.11.0 | Affected |
References
Frequently Asked Questions
What is CVE-2020-15133?
CVE-2020-15133 is a high-severity vulnerability affecting faye-websocket_project faye-websocket. It was published on July 31, 2020 and has a CVSS 3.1 base score of 8.0 (HIGH).
How severe is CVE-2020-15133?
This vulnerability has a CVSS 3.1 base score of 8.0, rated HIGH. It can be exploited remotely over the network. No authentication or special privileges are required for exploitation.
How do I fix or remediate CVE-2020-15133?
Check the references section for vendor advisories and patches from faye-websocket_project. Update faye-websocket to the latest patched version. If immediate patching is not possible, review the CVSS vector to understand the attack surface and apply compensating controls such as network segmentation or access restrictions.
How can CyberStrike help with CVE-2020-15133?
CyberStrike's AI-powered security agents can automatically detect CVE-2020-15133 across your infrastructure using autonomous pentesting, DAST scanning, and HackBrowser. The platform continuously monitors for known vulnerabilities and provides actionable remediation guidance prioritized by real-world exploitability.
How CyberStrike Helps
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