cvelist/2021/20xxx/CVE-2021-20235.json

{
    "data_type": "CVE",
    "data_format": "MITRE",
    "data_version": "4.0",
    "CVE_data_meta": {
        "ID": "CVE-2021-20235",
        "ASSIGNER": "secalert@redhat.com",
        "STATE": "PUBLIC"
    },
    "affects": {
        "vendor": {
            "vendor_data": [
                {
                    "vendor_name": "n/a",
                    "product": {
                        "product_data": [
                            {
                                "product_name": "zeromq",
                                "version": {
                                    "version_data": [
                                        {
                                            "version_value": "zeromq 4.3.3"
                                        }
                                    ]
                                }
                            }
                        ]
                    }
                }
            ]
        }
    },
    "problemtype": {
        "problemtype_data": [
            {
                "description": [
                    {
                        "lang": "eng",
                        "value": "CWE-120->CWE-787"
                    }
                ]
            }
        ]
    },
    "references": {
        "reference_data": [
            {
                "refsource": "MISC",
                "name": "https://bugzilla.redhat.com/show_bug.cgi?id=1921983",
                "url": "https://bugzilla.redhat.com/show_bug.cgi?id=1921983"
            },
            {
                "refsource": "MISC",
                "name": "https://github.com/zeromq/libzmq/security/advisories/GHSA-fc3w-qxf5-7hp6",
                "url": "https://github.com/zeromq/libzmq/security/advisories/GHSA-fc3w-qxf5-7hp6"
            }
        ]
    },
    "description": {
        "description_data": [
            {
                "lang": "eng",
                "value": "There's a flaw in the zeromq server in versions before 4.3.3 in src/decoder_allocators.hpp. The decoder static allocator could have its sized changed, but the buffer would remain the same as it is a static buffer. A remote, unauthenticated attacker who sends a crafted request to the zeromq server could trigger a buffer overflow WRITE of arbitrary data if CURVE/ZAP authentication is not enabled. The greatest impact of this flaw is to application availability, data integrity, and confidentiality."
            }
        ]
    }
}