cvelist/2021/42xxx/CVE-2021-42756.json

{
    "data_version": "4.0",
    "data_type": "CVE",
    "data_format": "MITRE",
    "CVE_data_meta": {
        "ID": "CVE-2021-42756",
        "ASSIGNER": "psirt@fortinet.com",
        "STATE": "PUBLIC"
    },
    "description": {
        "description_data": [
            {
                "lang": "eng",
                "value": "Multiple stack-based buffer overflow vulnerabilities [CWE-121] in the proxy daemon of FortiWeb 5.x all versions, 6.0.7 and below, 6.1.2 and below, 6.2.6 and below, 6.3.16 and below, 6.4 all versions may allow an unauthenticated remote attacker to achieve arbitrary code execution via specifically crafted HTTP requests."
            }
        ]
    },
    "problemtype": {
        "problemtype_data": [
            {
                "description": [
                    {
                        "lang": "eng",
                        "value": "Execute unauthorized code or commands",
                        "cweId": "CWE-121"
                    }
                ]
            }
        ]
    },
    "affects": {
        "vendor": {
            "vendor_data": [
                {
                    "vendor_name": "Fortinet",
                    "product": {
                        "product_data": [
                            {
                                "product_name": "FortiWeb",
                                "version": {
                                    "version_data": [
                                        {
                                            "version_affected": "<=",
                                            "version_name": "6.4.0",
                                            "version_value": "6.4.1"
                                        },
                                        {
                                            "version_affected": "<=",
                                            "version_name": "6.3.0",
                                            "version_value": "6.3.16"
                                        },
                                        {
                                            "version_affected": "<=",
                                            "version_name": "6.2.0",
                                            "version_value": "6.2.6"
                                        },
                                        {
                                            "version_affected": "<=",
                                            "version_name": "6.1.0",
                                            "version_value": "6.1.2"
                                        },
                                        {
                                            "version_affected": "<=",
                                            "version_name": "6.0.0",
                                            "version_value": "6.0.7"
                                        },
                                        {
                                            "version_affected": "<=",
                                            "version_name": "5.9.0",
                                            "version_value": "5.9.1"
                                        },
                                        {
                                            "version_affected": "<=",
                                            "version_name": "5.8.5",
                                            "version_value": "5.8.7"
                                        },
                                        {
                                            "version_affected": "<=",
                                            "version_name": "5.8.0",
                                            "version_value": "5.8.3"
                                        },
                                        {
                                            "version_affected": "<=",
                                            "version_name": "5.7.0",
                                            "version_value": "5.7.3"
                                        },
                                        {
                                            "version_affected": "<=",
                                            "version_name": "5.6.0",
                                            "version_value": "5.6.2"
                                        }
                                    ]
                                }
                            }
                        ]
                    }
                }
            ]
        }
    },
    "references": {
        "reference_data": [
            {
                "url": "https://fortiguard.com/psirt/FG-IR-21-186",
                "refsource": "MISC",
                "name": "https://fortiguard.com/psirt/FG-IR-21-186"
            }
        ]
    },
    "solution": [
        {
            "lang": "en",
            "value": "Upgrade to FortiWeb 7.0.0 or above,\r\nUpgrade to FortiWeb 6.3.17 or above,\r\nUpgrade to FortiWeb 6.2.7 or above.\r\nUpgrade to FortiWeb 6.1.3 or above.\r\nUpgrade to FortiWeb 6.0.8 or above."
        }
    ],
    "impact": {
        "cvss": [
            {
                "version": "3.1",
                "attackComplexity": "LOW",
                "attackVector": "NETWORK",
                "availabilityImpact": "HIGH",
                "baseScore": 9.3,
                "baseSeverity": "CRITICAL",
                "confidentialityImpact": "HIGH",
                "integrityImpact": "HIGH",
                "privilegesRequired": "NONE",
                "scope": "UNCHANGED",
                "userInteraction": "NONE",
                "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H/E:P/RL:U/RC:C"
            }
        ]
    }
}