{
    "data_version": "4.0",
    "data_type": "CVE",
    "data_format": "MITRE",
    "CVE_data_meta": {
        "ID": "CVE-2024-7490",
        "ASSIGNER": "psirt@microchip.com",
        "STATE": "PUBLIC"
    },
    "description": {
        "description_data": [
            {
                "lang": "eng",
                "value": "** UNSUPPPORTED WHEN ASSIGNED ** Improper Input Validation vulnerability in Microchip Techology Advanced Software Framework example DHCP server can cause remote code execution through a buffer overflow.\n This vulnerability is associated with program files tinydhcpserver.C and program routines lwip_dhcp_find_option.\n\nThis issue affects Advanced Software Framework: through 3.52.0.2574.\n\n\nASF is no longer being supported. Apply provided workaround or migrate to an actively maintained framework."
            }
        ]
    },
    "problemtype": {
        "problemtype_data": [
            {
                "description": [
                    {
                        "lang": "eng",
                        "value": "CWE-120 Buffer Copy without Checking Size of Input ('Classic Buffer Overflow')",
                        "cweId": "CWE-120"
                    }
                ]
            },
            {
                "description": [
                    {
                        "lang": "eng",
                        "value": "CWE-20 Improper Input Validation",
                        "cweId": "CWE-20"
                    }
                ]
            }
        ]
    },
    "affects": {
        "vendor": {
            "vendor_data": [
                {
                    "vendor_name": "Microchip Techology",
                    "product": {
                        "product_data": [
                            {
                                "product_name": "Advanced Software Framework",
                                "version": {
                                    "version_data": [
                                        {
                                            "version_value": "not down converted",
                                            "x_cve_json_5_version_data": {
                                                "versions": [
                                                    {
                                                        "lessThanOrEqual": "3.52.0.2574",
                                                        "status": "affected",
                                                        "version": "0",
                                                        "versionType": "semver"
                                                    }
                                                ],
                                                "defaultStatus": "affected"
                                            }
                                        }
                                    ]
                                }
                            }
                        ]
                    }
                }
            ]
        }
    },
    "references": {
        "reference_data": [
            {
                "url": "https://www.microchip.com/en-us/tools-resources/develop/libraries/advanced-software-framework",
                "refsource": "MISC",
                "name": "https://www.microchip.com/en-us/tools-resources/develop/libraries/advanced-software-framework"
            }
        ]
    },
    "generator": {
        "engine": "Vulnogram 0.2.0"
    },
    "source": {
        "advisory": "PSIRT-23",
        "discovery": "EXTERNAL"
    },
    "configuration": [
        {
            "lang": "en",
            "supportingMedia": [
                {
                    "base64": false,
                    "type": "text/html",
                    "value": "Use of the lwip stack embedded in ASF, and using the example DHCP server provided.<br>"
                }
            ],
            "value": "Use of the lwip stack embedded in ASF, and using the example DHCP server provided."
        }
    ],
    "work_around": [
        {
            "lang": "en",
            "supportingMedia": [
                {
                    "base64": false,
                    "type": "text/html",
                    "value": "<div>\nThe issue can be mitigated by adding a check to the size variable after the call [1] to pbuf_get_at on line 127 [1].\n If the size variable is not 4, then the function should cease \nprocessing and return. The lwip_dhcp_find_option function is only used \nto find this one option. <br></div><div><br></div>\n<p> [1] <a target=\"_blank\" rel=\"nofollow\" href=\"https://github.com/alfred-ai/microchip-asf/blob/bf5205e36a265b867d531647ffbf2de5e287853a/thirdparty/lwip/lwip-tinyservices/tinydhcpserver.c#L127\">https://github.com/alfred-ai/microchip-asf/blob/bf5205e36a265b867d531647ffbf2de5e287853a/thirdparty/lwip/lwip-tinyservices/tinydhcpserver.c#L127</a></p>\n\n<br>"
                }
            ],
            "value": "The issue can be mitigated by adding a check to the size variable after the call [1] to pbuf_get_at on line 127 [1].\n If the size variable is not 4, then the function should cease \nprocessing and return. The lwip_dhcp_find_option function is only used \nto find this one option. \n\n\n\n\n\n\n [1]  https://github.com/alfred-ai/microchip-asf/blob/bf5205e36a265b867d531647ffbf2de5e287853a/thirdparty/lwip/lwip-tinyservices/tinydhcpserver.c#L127"
        }
    ],
    "solution": [
        {
            "lang": "en",
            "supportingMedia": [
                {
                    "base64": false,
                    "type": "text/html",
                    "value": "ASF is no longer being supported. Apply provided workaround or migrate to an actively maintained framework.<br>"
                }
            ],
            "value": "ASF is no longer being supported. Apply provided workaround or migrate to an actively maintained framework."
        }
    ],
    "credits": [
        {
            "lang": "en",
            "value": "element55"
        }
    ]
}