CVE-2017-10723

{"id": "CVE-2017-10723", "metrics": {"cvssMetricV2": [{"type": "Primary", "source": "nvd@nist.gov", "cvssData": {"version": "2.0", "baseScore": 6.5, "accessVector": "NETWORK", "vectorString": "AV:N/AC:L/Au:S/C:P/I:P/A:P", "authentication": "SINGLE", "integrityImpact": "PARTIAL", "accessComplexity": "LOW", "availabilityImpact": "PARTIAL", "confidentialityImpact": "PARTIAL"}, "acInsufInfo": false, "impactScore": 6.4, "baseSeverity": "MEDIUM", "obtainAllPrivilege": false, "exploitabilityScore": 8.0, "obtainUserPrivilege": false, "obtainOtherPrivilege": false, "userInteractionRequired": false}], "cvssMetricV30": [{"type": "Primary", "source": "nvd@nist.gov", "cvssData": {"scope": "UNCHANGED", "version": "3.0", "baseScore": 8.8, "attackVector": "NETWORK", "baseSeverity": "HIGH", "vectorString": "CVSS:3.0/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H", "integrityImpact": "HIGH", "userInteraction": "NONE", "attackComplexity": "LOW", "availabilityImpact": "HIGH", "privilegesRequired": "LOW", "confidentialityImpact": "HIGH"}, "impactScore": 5.9, "exploitabilityScore": 2.8}]}, "published": "2019-06-17T22:15:10.200", "references": [{"url": "http://packetstormsecurity.com/files/153241/Shekar-Endoscope-Weak-Default-Settings-Memory-Corruption.html", "tags": ["Third Party Advisory", "VDB Entry"], "source": "cve@mitre.org"}, {"url": "https://github.com/ethanhunnt/IoT_vulnerabilities/blob/master/Shekar_boriscope_sec_issues.pdf", "tags": ["Exploit", "Third Party Advisory"], "source": "cve@mitre.org"}, {"url": "https://seclists.org/bugtraq/2019/Jun/8", "tags": ["Mailing List", "Third Party Advisory"], "source": "cve@mitre.org"}], "vulnStatus": "Analyzed", "weaknesses": [{"type": "Primary", "source": "nvd@nist.gov", "description": [{"lang": "en", "value": "CWE-119"}]}], "descriptions": [{"lang": "en", "value": "Recently it was discovered as a part of the research on IoT devices in the most recent firmware for Shekar Endoscope that an attacker connected to the device Wi-Fi SSID can exploit a memory corruption issue and execute remote code on the device. This device acts as an Endoscope camera that allows its users to use it in various industrial systems and settings, car garages, and also in some cases in the medical clinics to get access to areas that are difficult for a human being to reach. Any breach of this system can allow an attacker to get access to video feed and pictures viewed by that user and might allow them to get a foot hold in air gapped networks especially in case of nation critical infrastructure/industries. The firmware contains binary uvc_stream that is the UDP daemon which is responsible for handling all the UDP requests that the device receives. The client application sends a UDP request to change the Wi-Fi name which contains the following format: \"SETCMD0001+0001+[2 byte length of wifiname]+[Wifiname]. This request is handled by \"control_Dev_thread\" function which at address \"0x00409AE0\" compares the incoming request and determines if the 10th byte is 01 and if it is then it redirects to 0x0040A74C which calls the function \"setwifiname\". The function \"setwifiname\" uses a memcpy function but uses the length of the payload obtained by using strlen function as the third parameter which is the number of bytes to copy and this allows an attacker to overflow the function and control the $PC value."}, {"lang": "es", "value": "Recientemente, como parte de la investigaci\u00f3n sobre dispositivos IoT en el firmware m\u00e1s reciente para el Endoscopio Shekar, un atacante conectado al dispositivo SSID Wi-Fi puede explotar un problema de corrupci\u00f3n de memoria y ejecutar c\u00f3digo remoto en el dispositivo. Este dispositivo act\u00faa como una c\u00e1mara endosc\u00f3pica que permite a sus usuarios usarla en diversos sistemas y configuraciones industriales, talleres de coches y tambi\u00e9n, en ciertos casos, en cl\u00ednicas m\u00e9dicas para acceder a \u00e1reas que son dif\u00edciles de alcanzar para un ser humano. Cualquier violaci\u00f3n de este sistema puede permitirle a un atacante obtener acceso a fuentes de video e im\u00e1genes que visualiza ese usuario, y podr\u00eda permitirle tener un pie firme en redes con protecci\u00f3n Air Grap, especialmente en el caso de infraestructuras/industrias cr\u00edticas para la naci\u00f3n. El firmware contiene uvc_stream binario que es el demonio UDP que es responsable de manejar todas las solicitudes UDP que recibe el dispositivo. La aplicaci\u00f3n cliente env\u00eda una solicitud UDP para cambiar el nombre de Wi-Fi que contiene el siguiente formato: \"SETCMD0001+0001+[2 byte length of wifiname]+[Wifiname]. Esta solicitud es manejada por la funci\u00f3n \"control_Dev_thread\" que se encuentra en la direcci\u00f3n \"0x00409AE0\" compara la solicitud entrante y determina si el d\u00e9cimo byte es 01 y si es as\u00ed, redirige a 0x0040A74C que llama a la funci\u00f3n \"setwifiname\". La funci\u00f3n \"setwifiname\" usa una funci\u00f3n memcpy pero utiliza la longitud de la carga obtenida usando la funci\u00f3n strlen como el tercer par\u00e1metro, que es el n\u00famero de bytes a copiar y esto le permite a un atacante desbordar la funci\u00f3n y controlar el valor $PC."}], "lastModified": "2019-06-20T19:10:17.227", "configurations": [{"nodes": [{"negate": false, "cpeMatch": [{"criteria": "cpe:2.3:o:ishekar:endoscope_camera_firmware:*:*:*:*:*:*:*:*", "vulnerable": true, "matchCriteriaId": "4D620235-1706-4284-A45B-308C32A8DB90"}], "operator": "OR"}, {"negate": false, "cpeMatch": [{"criteria": "cpe:2.3:h:ishekar:endoscope_camera:-:*:*:*:*:*:*:*", "vulnerable": false, "matchCriteriaId": "46805FDE-1451-44FF-86EF-B52C0A39F6ED"}], "operator": "OR"}], "operator": "AND"}], "sourceIdentifier": "cve@mitre.org"}