{
    "data_version": "4.0",
    "data_type": "CVE",
    "data_format": "MITRE",
    "CVE_data_meta": {
        "ID": "CVE-2024-20407",
        "ASSIGNER": "psirt@cisco.com",
        "STATE": "PUBLIC"
    },
    "description": {
        "description_data": [
            {
                "lang": "eng",
                "value": "A vulnerability in the interaction between the TCP Intercept feature and the Snort 3 detection engine on Cisco Firepower Threat Defense (FTD) Software could allow an unauthenticated, remote attacker to bypass configured policies on an affected system. Devices that are configured with Snort 2 are not affected by this vulnerability. \r\n\r This vulnerability is due to a logic error when handling embryonic (half-open) TCP connections. An attacker could exploit this vulnerability by sending a crafted traffic pattern through an affected device. A successful exploit could allow unintended traffic to enter the network protected by the affected device."
            }
        ]
    },
    "problemtype": {
        "problemtype_data": [
            {
                "description": [
                    {
                        "lang": "eng",
                        "value": "Resource Management Errors",
                        "cweId": "CWE-399"
                    }
                ]
            }
        ]
    },
    "affects": {
        "vendor": {
            "vendor_data": [
                {
                    "vendor_name": "Cisco",
                    "product": {
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                                            "version_affected": "=",
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                                            "version_affected": "=",
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                                        {
                                            "version_affected": "=",
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                                        {
                                            "version_affected": "=",
                                            "version_value": "6.6.5"
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                                        {
                                            "version_affected": "=",
                                            "version_value": "6.6.5.1"
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                                        {
                                            "version_affected": "=",
                                            "version_value": "6.6.5.2"
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                                        {
                                            "version_affected": "=",
                                            "version_value": "6.6.7"
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                                        {
                                            "version_affected": "=",
                                            "version_value": "6.6.7.1"
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                                        {
                                            "version_affected": "=",
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                                        {
                                            "version_affected": "=",
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                                        {
                                            "version_affected": "=",
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                                        {
                                            "version_affected": "=",
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                                            "version_affected": "=",
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                                            "version_affected": "=",
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                                            "version_affected": "=",
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                                        {
                                            "version_affected": "=",
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                                        {
                                            "version_affected": "=",
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                                        {
                                            "version_affected": "=",
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                                        {
                                            "version_affected": "=",
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                                            "version_affected": "=",
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                                        {
                                            "version_affected": "=",
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                                        {
                                            "version_affected": "=",
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                                            "version_affected": "=",
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                                        {
                                            "version_affected": "=",
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                                        {
                                            "version_affected": "=",
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                                        {
                                            "version_affected": "=",
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                                        {
                                            "version_affected": "=",
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                                            "version_affected": "=",
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                                        {
                                            "version_affected": "=",
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                                        {
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                                        {
                                            "version_affected": "=",
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                                        {
                                            "version_affected": "=",
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                                        },
                                        {
                                            "version_affected": "=",
                                            "version_value": "7.1.0.2"
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                                        {
                                            "version_affected": "=",
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                                        {
                                            "version_affected": "=",
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                                        },
                                        {
                                            "version_affected": "=",
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                                        },
                                        {
                                            "version_affected": "=",
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                                        {
                                            "version_affected": "=",
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                                        {
                                            "version_affected": "=",
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                                        },
                                        {
                                            "version_affected": "=",
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                                        {
                                            "version_affected": "=",
                                            "version_value": "7.2.4.1"
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                                        {
                                            "version_affected": "=",
                                            "version_value": "7.2.5"
                                        },
                                        {
                                            "version_affected": "=",
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                                        {
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                                        },
                                        {
                                            "version_affected": "=",
                                            "version_value": "7.2.7"
                                        },
                                        {
                                            "version_affected": "=",
                                            "version_value": "7.2.5.2"
                                        },
                                        {
                                            "version_affected": "=",
                                            "version_value": "7.2.8"
                                        },
                                        {
                                            "version_affected": "=",
                                            "version_value": "7.2.8.1"
                                        },
                                        {
                                            "version_affected": "=",
                                            "version_value": "7.3.0"
                                        },
                                        {
                                            "version_affected": "=",
                                            "version_value": "7.3.1"
                                        },
                                        {
                                            "version_affected": "=",
                                            "version_value": "7.3.1.1"
                                        },
                                        {
                                            "version_affected": "=",
                                            "version_value": "7.3.1.2"
                                        },
                                        {
                                            "version_affected": "=",
                                            "version_value": "7.4.0"
                                        },
                                        {
                                            "version_affected": "=",
                                            "version_value": "7.4.1"
                                        },
                                        {
                                            "version_affected": "=",
                                            "version_value": "7.4.1.1"
                                        }
                                    ]
                                }
                            }
                        ]
                    }
                }
            ]
        }
    },
    "references": {
        "reference_data": [
            {
                "url": "https://sec.cloudapps.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-snort-bypass-PTry37fX",
                "refsource": "MISC",
                "name": "https://sec.cloudapps.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-snort-bypass-PTry37fX"
            }
        ]
    },
    "source": {
        "advisory": "cisco-sa-snort-bypass-PTry37fX",
        "discovery": "EXTERNAL",
        "defects": [
            "CSCwi42291"
        ]
    },
    "exploit": [
        {
            "lang": "en",
            "value": "The Cisco Product Security Incident Response Team (PSIRT) is not aware of any public announcements or malicious use of the vulnerability that is described in this advisory."
        }
    ],
    "impact": {
        "cvss": [
            {
                "version": "3.1",
                "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:N/I:L/A:N",
                "baseScore": 5.8,
                "baseSeverity": "MEDIUM",
                "attackVector": "NETWORK",
                "attackComplexity": "LOW",
                "privilegesRequired": "NONE",
                "userInteraction": "NONE",
                "scope": "CHANGED",
                "confidentialityImpact": "NONE",
                "integrityImpact": "LOW",
                "availabilityImpact": "NONE"
            }
        ]
    }
}