{
    "data_version": "4.0",
    "data_type": "CVE",
    "data_format": "MITRE",
    "CVE_data_meta": {
        "ID": "CVE-2024-20263",
        "ASSIGNER": "psirt@cisco.com",
        "STATE": "PUBLIC"
    },
    "description": {
        "description_data": [
            {
                "lang": "eng",
                "value": "A vulnerability with the access control list (ACL) management within a stacked switch configuration of Cisco Business 250 Series Smart Switches and Business 350 Series Managed Switches could allow an unauthenticated, remote attacker to bypass protection offered by a configured ACL on an affected device. This vulnerability is due to incorrect processing of ACLs on a stacked configuration when either the primary or backup switches experience a full stack reload or power cycle. An attacker could exploit this vulnerability by sending crafted traffic through an affected device. A successful exploit could allow the attacker to bypass configured ACLs, causing traffic to be dropped or forwarded in an unexpected manner. The attacker does not have control over the conditions that result in the device being in the vulnerable state. Note: In the vulnerable state, the ACL would be correctly applied on the primary devices but could be incorrectly applied to the backup devices."
            }
        ]
    },
    "problemtype": {
        "problemtype_data": [
            {
                "description": [
                    {
                        "lang": "eng",
                        "value": "Improper Access Control",
                        "cweId": "CWE-284"
                    }
                ]
            }
        ]
    },
    "affects": {
        "vendor": {
            "vendor_data": [
                {
                    "vendor_name": "Cisco",
                    "product": {
                        "product_data": [
                            {
                                "product_name": "Cisco Small Business Smart and Managed Switches",
                                "version": {
                                    "version_data": [
                                        {
                                            "version_affected": "=",
                                            "version_value": "2.0.0.73"
                                        },
                                        {
                                            "version_affected": "=",
                                            "version_value": "2.1.0.63"
                                        },
                                        {
                                            "version_affected": "=",
                                            "version_value": "2.2.0.63"
                                        },
                                        {
                                            "version_affected": "=",
                                            "version_value": "2.2.0.66"
                                        },
                                        {
                                            "version_affected": "=",
                                            "version_value": "2.2.5.68"
                                        },
                                        {
                                            "version_affected": "=",
                                            "version_value": "2.2.7.07"
                                        },
                                        {
                                            "version_affected": "=",
                                            "version_value": "2.2.8.04"
                                        },
                                        {
                                            "version_affected": "=",
                                            "version_value": "2.3.0.130"
                                        },
                                        {
                                            "version_affected": "=",
                                            "version_value": "2.3.5.63"
                                        },
                                        {
                                            "version_affected": "=",
                                            "version_value": "2.4.0.91"
                                        },
                                        {
                                            "version_affected": "=",
                                            "version_value": "2.4.0.94"
                                        },
                                        {
                                            "version_affected": "=",
                                            "version_value": "2.4.5.71"
                                        },
                                        {
                                            "version_affected": "=",
                                            "version_value": "2.5.0.78"
                                        },
                                        {
                                            "version_affected": "=",
                                            "version_value": "2.5.0.79"
                                        },
                                        {
                                            "version_affected": "=",
                                            "version_value": "2.5.0.82"
                                        },
                                        {
                                            "version_affected": "=",
                                            "version_value": "2.5.0.83"
                                        },
                                        {
                                            "version_affected": "=",
                                            "version_value": "2.5.0.89"
                                        },
                                        {
                                            "version_affected": "=",
                                            "version_value": "2.5.0.90"
                                        },
                                        {
                                            "version_affected": "=",
                                            "version_value": "2.5.0.92"
                                        },
                                        {
                                            "version_affected": "=",
                                            "version_value": "2.5.5.47"
                                        },
                                        {
                                            "version_affected": "=",
                                            "version_value": "2.5.7.85"
                                        },
                                        {
                                            "version_affected": "=",
                                            "version_value": "2.5.8.12"
                                        },
                                        {
                                            "version_affected": "=",
                                            "version_value": "2.5.8.15"
                                        },
                                        {
                                            "version_affected": "=",
                                            "version_value": "2.5.9.13"
                                        },
                                        {
                                            "version_affected": "=",
                                            "version_value": "2.5.9.15"
                                        },
                                        {
                                            "version_affected": "=",
                                            "version_value": "2.5.9.16"
                                        },
                                        {
                                            "version_affected": "=",
                                            "version_value": "3.0.0.61"
                                        },
                                        {
                                            "version_affected": "=",
                                            "version_value": "3.0.0.69"
                                        },
                                        {
                                            "version_affected": "=",
                                            "version_value": "3.1.0.57"
                                        },
                                        {
                                            "version_affected": "=",
                                            "version_value": "3.1.1.7"
                                        },
                                        {
                                            "version_affected": "=",
                                            "version_value": "3.2.0.84"
                                        },
                                        {
                                            "version_affected": "=",
                                            "version_value": "3.2.0.89"
                                        },
                                        {
                                            "version_affected": "=",
                                            "version_value": "3.2.1.1"
                                        },
                                        {
                                            "version_affected": "=",
                                            "version_value": "3.3.0.16"
                                        }
                                    ]
                                }
                            }
                        ]
                    }
                }
            ]
        }
    },
    "references": {
        "reference_data": [
            {
                "url": "https://sec.cloudapps.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-sb-bus-acl-bypass-5zn9hNJk",
                "refsource": "MISC",
                "name": "https://sec.cloudapps.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-sb-bus-acl-bypass-5zn9hNJk"
            }
        ]
    },
    "source": {
        "advisory": "cisco-sa-sb-bus-acl-bypass-5zn9hNJk",
        "discovery": "EXTERNAL",
        "defects": [
            "CSCwf48882",
            "CSCwh68993"
        ]
    },
    "exploit": [
        {
            "lang": "en",
            "value": "The Cisco 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"
            }
        ]
    }
}