cvelist/2021/3xxx/CVE-2021-3618.json

{
    "data_type": "CVE",
    "data_format": "MITRE",
    "data_version": "4.0",
    "CVE_data_meta": {
        "ID": "CVE-2021-3618",
        "ASSIGNER": "secalert@redhat.com",
        "STATE": "PUBLIC"
    },
    "affects": {
        "vendor": {
            "vendor_data": [
                {
                    "vendor_name": "n/a",
                    "product": {
                        "product_data": [
                            {
                                "product_name": "ALPACA",
                                "version": {
                                    "version_data": [
                                        {
                                            "version_value": "vsftpd 3.0.4, nginx 1.21.0, sendmail 8.17"
                                        }
                                    ]
                                }
                            }
                        ]
                    }
                }
            ]
        }
    },
    "problemtype": {
        "problemtype_data": [
            {
                "description": [
                    {
                        "lang": "eng",
                        "value": "CWE-295"
                    }
                ]
            }
        ]
    },
    "references": {
        "reference_data": [
            {
                "refsource": "MISC",
                "name": "https://bugzilla.redhat.com/show_bug.cgi?id=1975623",
                "url": "https://bugzilla.redhat.com/show_bug.cgi?id=1975623"
            },
            {
                "refsource": "MISC",
                "name": "https://alpaca-attack.com/",
                "url": "https://alpaca-attack.com/"
            },
            {
                "refsource": "MLIST",
                "name": "[debian-lts-announce] 20221122 [SECURITY] [DLA 3203-1] nginx security update",
                "url": "https://lists.debian.org/debian-lts-announce/2022/11/msg00031.html"
            }
        ]
    },
    "description": {
        "description_data": [
            {
                "lang": "eng",
                "value": "ALPACA is an application layer protocol content confusion attack, exploiting TLS servers implementing different protocols but using compatible certificates, such as multi-domain or wildcard certificates. A MiTM attacker having access to victim's traffic at the TCP/IP layer can redirect traffic from one subdomain to another, resulting in a valid TLS session. This breaks the authentication of TLS and cross-protocol attacks may be possible where the behavior of one protocol service may compromise the other at the application layer."
            }
        ]
    }
}