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CVE-2020-15133
Good to know:
Date: July 31, 2020
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.
Language: Ruby
Severity Score
Related Resources (17)
Severity Score
Weakness Type (CWE)
Improper Certificate Validation
CWE-295Top Fix
CVSS v3.1
| Base Score: |
|
|---|---|
| Attack Vector (AV): | NETWORK |
| Attack Complexity (AC): | HIGH |
| Privileges Required (PR): | NONE |
| User Interaction (UI): | REQUIRED |
| Scope (S): | CHANGED |
| Confidentiality (C): | HIGH |
| Integrity (I): | HIGH |
| Availability (A): | NONE |
CVSS v2
| Base Score: |
|
|---|---|
| Access Vector (AV): | NETWORK |
| Access Complexity (AC): | MEDIUM |
| Authentication (AU): | NONE |
| Confidentiality (C): | PARTIAL |
| Integrity (I): | PARTIAL |
| Availability (A): | NONE |
| Additional information: |