CVE-2020-12886

{"id": "CVE-2020-12886", "metrics": {"cvssMetricV2": [{"type": "Primary", "source": "nvd@nist.gov", "cvssData": {"version": "2.0", "baseScore": 6.4, "accessVector": "NETWORK", "vectorString": "AV:N/AC:L/Au:N/C:P/I:N/A:P", "authentication": "NONE", "integrityImpact": "NONE", "accessComplexity": "LOW", "availabilityImpact": "PARTIAL", "confidentialityImpact": "PARTIAL"}, "acInsufInfo": false, "impactScore": 4.9, "baseSeverity": "MEDIUM", "obtainAllPrivilege": false, "exploitabilityScore": 10.0, "obtainUserPrivilege": false, "obtainOtherPrivilege": false, "userInteractionRequired": false}], "cvssMetricV31": [{"type": "Primary", "source": "nvd@nist.gov", "cvssData": {"scope": "UNCHANGED", "version": "3.1", "baseScore": 9.1, "attackVector": "NETWORK", "baseSeverity": "CRITICAL", "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:H", "integrityImpact": "NONE", "userInteraction": "NONE", "attackComplexity": "LOW", "availabilityImpact": "HIGH", "privilegesRequired": "NONE", "confidentialityImpact": "HIGH"}, "impactScore": 5.2, "exploitabilityScore": 3.9}]}, "published": "2020-06-18T19:15:11.567", "references": [{"url": "https://github.com/ARMmbed/mbed-coap/pull/116", "tags": ["Third Party Advisory"], "source": "cve@mitre.org"}, {"url": "https://github.com/ARMmbed/mbed-os/issues/12948", "tags": ["Third Party Advisory"], "source": "cve@mitre.org"}, {"url": "https://github.com/ARMmbed/mbed-coap/pull/116", "tags": ["Third Party Advisory"], "source": "af854a3a-2127-422b-91ae-364da2661108"}, {"url": "https://github.com/ARMmbed/mbed-os/issues/12948", "tags": ["Third Party Advisory"], "source": "af854a3a-2127-422b-91ae-364da2661108"}], "vulnStatus": "Modified", "weaknesses": [{"type": "Primary", "source": "nvd@nist.gov", "description": [{"lang": "en", "value": "CWE-125"}]}], "descriptions": [{"lang": "en", "value": "A buffer over-read was discovered in the CoAP library in Arm Mbed OS 5.15.3. The CoAP parser is responsible for parsing received CoAP packets. The function sn_coap_parser_options_parse() parses the CoAP packet header starting from the message token. The length of the token in the received message is provided in the first byte parsed by the sn_coap_parser_options_parse() function. The length encoded in the message is not validated against the actual input buffer length before accessing the token. As a result, memory access outside of the intended boundary of the buffer may occur."}, {"lang": "es", "value": "Se detect\u00f3 una lectura excesiva del b\u00fafer en la biblioteca CoAP en Arm Mbed OS versi\u00f3n 5.15.3. El analizador CoAP es responsable de analizar los paquetes CoAP recibidos. La funci\u00f3n sn_coap_parser_options_parse() analiza el encabezado del paquete CoAP a partir del token del mensaje. La longitud del token en el mensaje recibido es proporcionado en el primer byte analizado por la funci\u00f3n sn_coap_parser_options_parse(). La longitud codificada en el mensaje no es validada contra la longitud real del b\u00fafer de entrada antes de acceder al token. Como resultado, un acceso a la memoria fuera del l\u00edmite previsto del b\u00fafer puede producirse"}], "lastModified": "2024-11-21T05:00:29.590", "configurations": [{"nodes": [{"negate": false, "cpeMatch": [{"criteria": "cpe:2.3:o:arm:mbed_os:5.15.3:*:*:*:*:*:*:*", "vulnerable": true, "matchCriteriaId": "B314FCEF-12B7-4510-AC5E-12D3574E3E68"}], "operator": "OR"}]}], "sourceIdentifier": "cve@mitre.org"}