CVE-2024-40493

Null Pointer Dereference in `coap_client_exchange_blockwise2` function in Keith Cullen FreeCoAP 1.0 allows remote attackers to cause a denial of service and potentially execute arbitrary code via a specially crafted CoAP packet that causes `coap_msg_get_payload(resp)` to return a null pointer, which is then dereferenced in a call to `memcpy`.

CVSS v3 9.8 CRITICAL

9.8^/10

CVSS v3 : CRITICAL

Vector :

Exploitability : 3.9 / Impact : 5.9

Attack Vector NETWORK

Attack Complexity LOW

Privileges Required NONE

User Interaction NONE

Confidentiality Impact HIGH

Integrity Impact HIGH

Availability Impact HIGH

Scope UNCHANGED

References

Link	Resource
https://gist.github.com/dqp10515/fe80005e2fb58ed8ada178ac017e4ad4	Third Party Advisory
https://github.com/keith-cullen/FreeCoAP/issues/37	Exploit Issue Tracking

Configurations

Configuration 1 (hide)

cpe:2.3:a:keith-cullen:freecoap:1.0:*:*:*:*:*:*:*

History

No history.

Information

Published : 2024-10-22 22:15

Updated : 2024-10-25 17:01

NVD link : CVE-2024-40493

Mitre link : CVE-2024-40493

CVE.ORG link : CVE-2024-40493

JSON object : View

Products Affected

keith-cullen

freecoap

CWE

CWE-476

NULL Pointer Dereference

{"id": "CVE-2024-40493", "cveTags": [], "metrics": {"cvssMetricV31": [{"type": "Primary", "source": "nvd@nist.gov", "cvssData": {"scope": "UNCHANGED", "version": "3.1", "baseScore": 9.8, "attackVector": "NETWORK", "baseSeverity": "CRITICAL", "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H", "integrityImpact": "HIGH", "userInteraction": "NONE", "attackComplexity": "LOW", "availabilityImpact": "HIGH", "privilegesRequired": "NONE", "confidentialityImpact": "HIGH"}, "impactScore": 5.9, "exploitabilityScore": 3.9}, {"type": "Secondary", "source": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "cvssData": {"scope": "UNCHANGED", "version": "3.1", "baseScore": 5.3, "attackVector": "NETWORK", "baseSeverity": "MEDIUM", "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L", "integrityImpact": "NONE", "userInteraction": "NONE", "attackComplexity": "LOW", "availabilityImpact": "LOW", "privilegesRequired": "NONE", "confidentialityImpact": "NONE"}, "impactScore": 1.4, "exploitabilityScore": 3.9}]}, "published": "2024-10-22T22:15:04.407", "references": [{"url": "https://gist.github.com/dqp10515/fe80005e2fb58ed8ada178ac017e4ad4", "tags": ["Third Party Advisory"], "source": "cve@mitre.org"}, {"url": "https://github.com/keith-cullen/FreeCoAP/issues/37", "tags": ["Exploit", "Issue Tracking"], "source": "cve@mitre.org"}], "vulnStatus": "Analyzed", "weaknesses": [{"type": "Primary", "source": "nvd@nist.gov", "description": [{"lang": "en", "value": "CWE-476"}]}, {"type": "Secondary", "source": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "description": [{"lang": "en", "value": "CWE-476"}]}], "descriptions": [{"lang": "en", "value": "Null Pointer Dereference in `coap_client_exchange_blockwise2` function in Keith Cullen FreeCoAP 1.0 allows remote attackers to cause a denial of service and potentially execute arbitrary code via a specially crafted CoAP packet that causes `coap_msg_get_payload(resp)` to return a null pointer, which is then dereferenced in a call to `memcpy`."}, {"lang": "es", "value": " La desreferencia de puntero nulo en la funci\u00f3n `coap_client_exchange_blockwise2` en Keith Cullen FreeCoAP 1.0 permite a atacantes remotos provocar una denegaci\u00f3n de servicio y potencialmente ejecutar c\u00f3digo arbitrario a trav\u00e9s de un paquete CoAP especialmente manipulado que hace que `coap_msg_get_payload(resp)` devuelva un puntero nulo, que luego se desreferencia en una llamada a `memcpy`."}], "lastModified": "2024-10-25T17:01:22.433", "configurations": [{"nodes": [{"negate": false, "cpeMatch": [{"criteria": "cpe:2.3:a:keith-cullen:freecoap:1.0:*:*:*:*:*:*:*", "vulnerable": true, "matchCriteriaId": "E8787D78-015B-4E25-BBCB-B0748567705B"}], "operator": "OR"}]}], "sourceIdentifier": "cve@mitre.org"}