{
    "data_version": "4.0",
    "data_type": "CVE",
    "data_format": "MITRE",
    "CVE_data_meta": {
        "ID": "CVE-2021-34947",
        "ASSIGNER": "zdi-disclosures@trendmicro.com",
        "STATE": "PUBLIC"
    },
    "description": {
        "description_data": [
            {
                "lang": "eng",
                "value": "NETGEAR R7800 net-cgi Out-Of-Bounds Write Remote Code Execution Vulnerability. This vulnerability allows network-adjacent attackers to execute arbitrary code on affected installations of NETGEAR R7800 routers. Authentication is not required to exploit this vulnerability.\n\nThe specific flaw exists within the parsing of the soap_block_table file. The issue results from the lack of proper validation of user-supplied data, which can result in a write past the end of an allocated data structure. An attacker can leverage this vulnerability to execute code in the context of root.\n. Was ZDI-CAN-13055."
            }
        ]
    },
    "problemtype": {
        "problemtype_data": [
            {
                "description": [
                    {
                        "lang": "eng",
                        "value": "CWE-787: Out-of-bounds Write",
                        "cweId": "CWE-787"
                    }
                ]
            }
        ]
    },
    "affects": {
        "vendor": {
            "vendor_data": [
                {
                    "vendor_name": "NETGEAR",
                    "product": {
                        "product_data": [
                            {
                                "product_name": "R7800",
                                "version": {
                                    "version_data": [
                                        {
                                            "version_affected": "=",
                                            "version_value": "1.0.2.82"
                                        }
                                    ]
                                }
                            }
                        ]
                    }
                }
            ]
        }
    },
    "references": {
        "reference_data": [
            {
                "url": "https://www.zerodayinitiative.com/advisories/ZDI-21-1116/",
                "refsource": "MISC",
                "name": "https://www.zerodayinitiative.com/advisories/ZDI-21-1116/"
            },
            {
                "url": "https://kb.netgear.com/000064044/Security-Advisory-for-Pre-Authentication-Buffer-Overflow-on-Some-Routers-PSV-2021-0129",
                "refsource": "MISC",
                "name": "https://kb.netgear.com/000064044/Security-Advisory-for-Pre-Authentication-Buffer-Overflow-on-Some-Routers-PSV-2021-0129"
            }
        ]
    },
    "source": {
        "lang": "en",
        "value": "Hoang Thach Nguyen of STAR Labs"
    },
    "impact": {
        "cvss": [
            {
                "version": "3.0",
                "vectorString": "CVSS:3.0/AV:A/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H",
                "baseScore": 8.8,
                "baseSeverity": "HIGH"
            }
        ]
    }
}