CVE-2024-7490

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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. 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Apply provided workaround or migrate to an actively maintained framework.", "supportingMedia": [{"type": "text/html", "value": "ASF is no longer being supported. Apply provided workaround or migrate to an actively maintained framework.<br>", "base64": false}]}], "datePublic": "2024-08-05T07:00:00.000Z", "references": [{"url": "https://www.microchip.com/en-us/tools-resources/develop/libraries/advanced-software-framework", "tags": ["product"]}], "workarounds": [{"lang": "en", "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", "supportingMedia": [{"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>", "base64": false}]}], "x_generator": {"engine": "Vulnogram 0.2.0"}, "descriptions": [{"lang": "en", "value": "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.", "supportingMedia": [{"type": "text/html", "value": "Improper Input Validation vulnerability in Microchip Techology Advanced Software Framework example DHCP server can cause remote code execution through a buffer overflow.<br><p> This vulnerability is associated with program files <tt>tinydhcpserver.C</tt> and program routines <tt>lwip_dhcp_find_option</tt>.</p><p>This issue affects Advanced Software Framework: through 3.52.0.2574.</p><p>\nASF is no longer being supported. Apply provided workaround or migrate to an actively maintained framework.\n\n<br></p>", "base64": false}]}], "problemTypes": [{"descriptions": [{"lang": "en", "type": "CWE", "cweId": "CWE-120", "description": "CWE-120 Buffer Copy without Checking Size of Input ('Classic Buffer Overflow')"}]}], "configurations": [{"lang": "en", "value": "Use of the lwip stack embedded in ASF, and using the example DHCP server provided.", "supportingMedia": [{"type": "text/html", "value": "Use of the lwip stack embedded in ASF, and using the example DHCP server provided.<br>", "base64": false}]}], "providerMetadata": {"orgId": "dc3f6da9-85b5-4a73-84a2-2ec90b40fca5", "shortName": "Microchip", "dateUpdated": "2025-08-29T20:23:53.142Z"}}}, "cveMetadata": {"cveId": "CVE-2024-7490", "state": "PUBLISHED", "dateUpdated": "2025-08-29T20:23:53.142Z", "dateReserved": "2024-08-05T14:10:12.165Z", "assignerOrgId": "dc3f6da9-85b5-4a73-84a2-2ec90b40fca5", "datePublished": "2024-08-08T15:01:09.055Z", "assignerShortName": "Microchip"}, "dataVersion": "5.1"}

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Apply provided workaround or migrate to an actively maintained framework."}, {"lang": "es", "value": "Una vulnerabilidad de validaci\u00f3n de entrada incorrecta en el servidor DHCP de ejemplo de Microchip Techology Advanced Software Framework puede provocar la ejecuci\u00f3n remota de c\u00f3digo a trav\u00e9s de un desbordamiento del b\u00fafer. Esta vulnerabilidad est\u00e1 asociada con los archivos de programa tinydhcpserver.C y las rutinas de programa lwip_dhcp_find_option. Este problema afecta a Advanced Software Framework: hasta 3.52.0.2574. La PPA ya no recibe apoyo. Aplique workaround proporcionado o migre a un framework fabricado activamente."}], "id": "CVE-2024-7490", "lastModified": "2026-06-17T08:20:18.273", "metrics": {"cvssMetricV31": [{"cvssData": {"attackComplexity": "LOW", "attackVector": "NETWORK", "availabilityImpact": "HIGH", "baseScore": 9.8, "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", "version": "3.1"}, "exploitabilityScore": 3.9, "impactScore": 5.9, "source": "nvd@nist.gov", "type": "Primary"}], "cvssMetricV40": [{"cvssData": {"Automatable": "NOT_DEFINED", "Recovery": "NOT_DEFINED", "Safety": "NOT_DEFINED", "attackComplexity": "LOW", "attackRequirements": "PRESENT", "attackVector": "NETWORK", "availabilityRequirement": "NOT_DEFINED", "baseScore": 9.5, "baseSeverity": "CRITICAL", "confidentialityRequirement": "NOT_DEFINED", "exploitMaturity": "NOT_DEFINED", "integrityRequirement": "NOT_DEFINED", "modifiedAttackComplexity": "NOT_DEFINED", "modifiedAttackRequirements": "NOT_DEFINED", "modifiedAttackVector": "NOT_DEFINED", "modifiedPrivilegesRequired": "NOT_DEFINED", "modifiedSubAvailabilityImpact": "NOT_DEFINED", "modifiedSubConfidentialityImpact": "NOT_DEFINED", "modifiedSubIntegrityImpact": "NOT_DEFINED", "modifiedUserInteraction": "NOT_DEFINED", "modifiedVulnAvailabilityImpact": "NOT_DEFINED", "modifiedVulnConfidentialityImpact": "NOT_DEFINED", "modifiedVulnIntegrityImpact": "NOT_DEFINED", "privilegesRequired": "NONE", "providerUrgency": "NOT_DEFINED", "subAvailabilityImpact": "HIGH", "subConfidentialityImpact": "HIGH", "subIntegrityImpact": "HIGH", "userInteraction": "NONE", "valueDensity": "NOT_DEFINED", "vectorString": "CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:N/VC:H/VI:H/VA:H/SC:H/SI:H/SA:H/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X", "version": "4.0", "vulnAvailabilityImpact": "HIGH", "vulnConfidentialityImpact": "HIGH", "vulnIntegrityImpact": "HIGH", "vulnerabilityResponseEffort": "NOT_DEFINED"}, "source": "dc3f6da9-85b5-4a73-84a2-2ec90b40fca5", "type": "Secondary"}], "ssvcV203": [{"source": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "ssvcData": {"id": "CVE-2024-7490", "options": [{"exploitation": "none"}, {"automatable": "no"}, {"technicalImpact": "total"}], "role": "CISA Coordinator", "timestamp": "2024-08-08T16:25:23.040865Z", "version": "2.0.3"}}]}, "published": "2024-08-08T15:15:19.057", "references": [{"source": "dc3f6da9-85b5-4a73-84a2-2ec90b40fca5", "tags": ["Vendor Advisory"], "url": "https://www.microchip.com/en-us/tools-resources/develop/libraries/advanced-software-framework"}, {"source": "af854a3a-2127-422b-91ae-364da2661108", "tags": ["Third Party Advisory"], "url": "https://www.kb.cert.org/vuls/id/138043"}], "sourceIdentifier": "dc3f6da9-85b5-4a73-84a2-2ec90b40fca5", "vulnStatus": "Analyzed", "weaknesses": [{"description": [{"lang": "en", "value": "CWE-120"}], "source": "dc3f6da9-85b5-4a73-84a2-2ec90b40fca5", "type": "Secondary"}, {"description": [{"lang": "en", "value": "CWE-120"}], "source": "nvd@nist.gov", "type": "Primary"}]}

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