{
    "data_version": "4.0",
    "data_type": "CVE",
    "data_format": "MITRE",
    "CVE_data_meta": {
        "ID": "CVE-2023-4692",
        "ASSIGNER": "secalert@redhat.com",
        "STATE": "PUBLIC"
    },
    "description": {
        "description_data": [
            {
                "lang": "eng",
                "value": "An out-of-bounds write flaw was found in grub2's NTFS filesystem driver. This issue may allow an attacker to present a specially crafted NTFS filesystem image, leading to grub's heap metadata corruption. In some circumstances, the attack may also corrupt the UEFI firmware heap metadata. As a result, arbitrary code execution and secure boot protection bypass may be achieved."
            }
        ]
    },
    "problemtype": {
        "problemtype_data": [
            {
                "description": [
                    {
                        "lang": "eng",
                        "value": "Heap-based Buffer Overflow",
                        "cweId": "CWE-122"
                    }
                ]
            }
        ]
    },
    "affects": {
        "vendor": {
            "vendor_data": [
                {
                    "vendor_name": "Red Hat",
                    "product": {
                        "product_data": [
                            {
                                "product_name": "Red Hat Enterprise Linux 8",
                                "version": {
                                    "version_data": [
                                        {
                                            "version_value": "not down converted",
                                            "x_cve_json_5_version_data": {
                                                "versions": [
                                                    {
                                                        "version": "1:2.02-156.el8",
                                                        "lessThan": "*",
                                                        "versionType": "rpm",
                                                        "status": "unaffected"
                                                    }
                                                ],
                                                "defaultStatus": "affected"
                                            }
                                        }
                                    ]
                                }
                            },
                            {
                                "product_name": "Red Hat Enterprise Linux 9",
                                "version": {
                                    "version_data": [
                                        {
                                            "version_value": "not down converted",
                                            "x_cve_json_5_version_data": {
                                                "versions": [
                                                    {
                                                        "version": "1:2.06-77.el9",
                                                        "lessThan": "*",
                                                        "versionType": "rpm",
                                                        "status": "unaffected"
                                                    }
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                                                "defaultStatus": "affected"
                                            }
                                        }
                                    ]
                                }
                            },
                            {
                                "product_name": "Red Hat Enterprise Linux 7",
                                "version": {
                                    "version_data": [
                                        {
                                            "version_value": "not down converted",
                                            "x_cve_json_5_version_data": {
                                                "defaultStatus": "unknown"
                                            }
                                        }
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    },
    "references": {
        "reference_data": [
            {
                "url": "https://access.redhat.com/errata/RHSA-2024:2456",
                "refsource": "MISC",
                "name": "https://access.redhat.com/errata/RHSA-2024:2456"
            },
            {
                "url": "https://access.redhat.com/errata/RHSA-2024:3184",
                "refsource": "MISC",
                "name": "https://access.redhat.com/errata/RHSA-2024:3184"
            },
            {
                "url": "https://access.redhat.com/security/cve/CVE-2023-4692",
                "refsource": "MISC",
                "name": "https://access.redhat.com/security/cve/CVE-2023-4692"
            },
            {
                "url": "https://bugzilla.redhat.com/show_bug.cgi?id=2236613",
                "refsource": "MISC",
                "name": "https://bugzilla.redhat.com/show_bug.cgi?id=2236613"
            },
            {
                "url": "https://dfir.ru/2023/10/03/cve-2023-4692-cve-2023-4693-vulnerabilities-in-the-grub-boot-manager/",
                "refsource": "MISC",
                "name": "https://dfir.ru/2023/10/03/cve-2023-4692-cve-2023-4693-vulnerabilities-in-the-grub-boot-manager/"
            },
            {
                "url": "https://lists.gnu.org/archive/html/grub-devel/2023-10/msg00028.html",
                "refsource": "MISC",
                "name": "https://lists.gnu.org/archive/html/grub-devel/2023-10/msg00028.html"
            },
            {
                "url": "https://seclists.org/oss-sec/2023/q4/37",
                "refsource": "MISC",
                "name": "https://seclists.org/oss-sec/2023/q4/37"
            }
        ]
    },
    "impact": {
        "cvss": [
            {
                "attackComplexity": "HIGH",
                "attackVector": "LOCAL",
                "availabilityImpact": "HIGH",
                "baseScore": 7.5,
                "baseSeverity": "HIGH",
                "confidentialityImpact": "HIGH",
                "integrityImpact": "HIGH",
                "privilegesRequired": "HIGH",
                "scope": "CHANGED",
                "userInteraction": "NONE",
                "vectorString": "CVSS:3.1/AV:L/AC:H/PR:H/UI:N/S:C/C:H/I:H/A:H",
                "version": "3.1"
            }
        ]
    }
}