cvelist/2019/5xxx/CVE-2019-5101.json

{
    "data_version": "4.0",
    "data_type": "CVE",
    "data_format": "MITRE",
    "CVE_data_meta": {
        "ID": "CVE-2019-5101",
        "ASSIGNER": "talos-cna@cisco.com",
        "STATE": "PUBLIC"
    },
    "description": {
        "description_data": [
            {
                "lang": "eng",
                "value": "An exploitable information leak vulnerability exists in the ustream-ssl library of OpenWrt, versions 18.06.4 and 15.05.1. When connecting to a remote server, the server's SSL certificate is checked but no action is taken when the certificate is invalid. An attacker could exploit this behavior by performing a man-in-the-middle attack, providing any certificate, leading to the theft of all the data sent by the client during the first request.An exploitable information leak vulnerability exists in the ustream-ssl library of OpenWrt, versions 18.06.4 and 15.05.1. When connecting to a remote server, the server's SSL certificate is checked but no action is taken when the certificate is invalid. An attacker could exploit this behavior by performing a man-in-the-middle attack, providing any certificate, leading to the theft of all the data sent by the client during the first request. After an SSL connection is initialized via _ustream_ssl_init, and after any data (e.g. the client's HTTP request) is written to the stream using ustream_printf, the code eventually enters the function _ustream_ssl_poll, which is used to dispatch the read/write events"
            }
        ]
    },
    "problemtype": {
        "problemtype_data": [
            {
                "description": [
                    {
                        "lang": "eng",
                        "value": "CWE-295: Improper Certificate Validation",
                        "cweId": "CWE-295"
                    }
                ]
            }
        ]
    },
    "affects": {
        "vendor": {
            "vendor_data": [
                {
                    "vendor_name": "OpenWRT",
                    "product": {
                        "product_data": [
                            {
                                "product_name": "OpenWRT",
                                "version": {
                                    "version_data": [
                                        {
                                            "version_affected": "=",
                                            "version_value": "OpenWrt 15.05.1, via wget (busybox)"
                                        },
                                        {
                                            "version_affected": "=",
                                            "version_value": "OpenWrt 18.06.4, via wget (uclient-fetch)"
                                        }
                                    ]
                                }
                            }
                        ]
                    }
                }
            ]
        }
    },
    "references": {
        "reference_data": [
            {
                "url": "https://talosintelligence.com/vulnerability_reports/TALOS-2019-0893",
                "refsource": "MISC",
                "name": "https://talosintelligence.com/vulnerability_reports/TALOS-2019-0893"
            }
        ]
    },
    "credits": [
        {
            "lang": "en",
            "value": "Discovered by Claudio Bozzato of Cisco Talos."
        }
    ],
    "impact": {
        "cvss": [
            {
                "version": "3.1",
                "vectorString": "CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:C/C:L/I:N/A:N",
                "attackVector": "NETWORK",
                "attackComplexity": "HIGH",
                "privilegesRequired": "NONE",
                "userInteraction": "NONE",
                "scope": "CHANGED",
                "confidentialityImpact": "LOW",
                "integrityImpact": "NONE",
                "availabilityImpact": "NONE",
                "baseScore": 4,
                "baseSeverity": "MEDIUM"
            }
        ]
    }
}