cvelist/2020/15xxx/CVE-2020-15133.json

{
    "CVE_data_meta": {
        "ASSIGNER": "security-advisories@github.com",
        "ID": "CVE-2020-15133",
        "STATE": "PUBLIC",
        "TITLE": "Missing TLS certificate verification in Faye Websocket"
    },
    "affects": {
        "vendor": {
            "vendor_data": [
                {
                    "product": {
                        "product_data": [
                            {
                                "product_name": "faye-websocket",
                                "version": {
                                    "version_data": [
                                        {
                                            "version_value": "< 0.11.0"
                                        }
                                    ]
                                }
                            }
                        ]
                    },
                    "vendor_name": "faye"
                }
            ]
        }
    },
    "data_format": "MITRE",
    "data_type": "CVE",
    "data_version": "4.0",
    "description": {
        "description_data": [
            {
                "lang": "eng",
                "value": "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."
            }
        ]
    },
    "impact": {
        "cvss": {
            "attackComplexity": "HIGH",
            "attackVector": "NETWORK",
            "availabilityImpact": "NONE",
            "baseScore": 8,
            "baseSeverity": "HIGH",
            "confidentialityImpact": "HIGH",
            "integrityImpact": "HIGH",
            "privilegesRequired": "NONE",
            "scope": "CHANGED",
            "userInteraction": "REQUIRED",
            "vectorString": "CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:C/C:H/I:H/A:N",
            "version": "3.1"
        }
    },
    "problemtype": {
        "problemtype_data": [
            {
                "description": [
                    {
                        "lang": "eng",
                        "value": "CWE-295: Improper Certificate Validation"
                    }
                ]
            }
        ]
    },
    "references": {
        "reference_data": [
            {
                "name": "https://blog.jcoglan.com/2020/07/31/missing-tls-verification-in-faye/",
                "refsource": "MISC",
                "url": "https://blog.jcoglan.com/2020/07/31/missing-tls-verification-in-faye/"
            },
            {
                "name": "https://github.com/faye/faye-websocket-ruby/security/advisories/GHSA-2v5c-755p-p4gv",
                "refsource": "CONFIRM",
                "url": "https://github.com/faye/faye-websocket-ruby/security/advisories/GHSA-2v5c-755p-p4gv"
            }
        ]
    },
    "source": {
        "advisory": "GHSA-2v5c-755p-p4gv",
        "discovery": "UNKNOWN"
    }
}