{"containers": {"cna": {"affected": [{"platforms": ["MX Series"], "product": "Junos OS", "vendor": "Juniper Networks", "versions": [{"lessThan": "17.3R1", "status": "unaffected", "version": "unspecified", "versionType": "custom"}, {"lessThan": "17.3*", "status": "affected", "version": "17.3R1", "versionType": "custom"}, {"lessThan": "17.4R2-S9, 17.4R3-S2", "status": "affected", "version": "17.4", "versionType": "custom"}, {"lessThan": "18.1R3-S9", "status": "affected", "version": "18.1", "versionType": "custom"}, {"lessThan": "18.2R3-S3", "status": "affected", "version": "18.2", "versionType": "custom"}, {"lessThan": "18.3R3-S1", "status": "affected", "version": "18.3", "versionType": "custom"}, {"lessThan": "18.4R3", "status": "affected", "version": "18.4", "versionType": "custom"}, {"lessThan": "19.1R2-S2, 19.1R3", "status": "affected", "version": "19.1", "versionType": "custom"}, {"lessThan": "19.2R2", "status": "affected", "version": "19.2", "versionType": "custom"}, {"lessThan": "19.3R3", "status": "affected", "version": "19.3", "versionType": "custom"}]}], "configurations": [{"lang": "en", "value": "\nThe subscriber management services with the captive portal must be enabled to be vulnerable to this issue. \nExample locations:\n\n [system services subscriber-management]\n [services captive-portal-content-delivery]\n [dynamic-profiles \"profile-name\" services] \n [protocols ppp-service] - i.e. configured with subscriber management services.\n"}], "datePublic": "2021-04-14T00:00:00", "descriptions": [{"lang": "en", "value": "A NULL Pointer Dereference vulnerability in the Captive Portal Content Delivery (CPCD) services daemon (cpcd) of Juniper Networks Junos OS on MX Series with MS-PIC, MS-SPC3, MS-MIC or MS-MPC allows an attacker to send malformed HTTP packets to the device thereby causing a Denial of Service (DoS), crashing the Multiservices PIC Management Daemon (mspmand) process thereby denying users the ability to login, while concurrently impacting other mspmand services and traffic through the device. 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services daemon (cpcd) of Juniper Networks Junos OS on MX Series with MS-PIC, MS-SPC3, MS-MIC or MS-MPC allows an attacker to send malformed HTTP packets to the device thereby causing a Denial of Service (DoS), crashing the Multiservices PIC Management Daemon (mspmand) process thereby denying users the ability to login, while concurrently impacting other mspmand services and traffic through the device. Continued receipt and processing of these malformed packets will create a sustained Denial of Service (DoS) condition. While the Services PIC is restarting, all PIC services will be bypassed until the Services PIC completes its boot process. An attacker sending these malformed HTTP packets to the device who is not part of the Captive Portal experience is not able to exploit this issue. This issue is not applicable to MX RE-based CPCD platforms. This issue affects: Juniper Networks Junos OS on MX Series 17.3 version 17.3R1 and later versions prior to 17.4 versions 17.4R2-S9, 17.4R3-S2; 18.1 versions prior to 18.1R3-S9; 18.2 versions prior to 18.2R3-S3; 18.3 versions prior to 18.3R3-S1; 18.4 versions prior to 18.4R3; 19.1 versions prior to 19.1R2-S2, 19.1R3; 19.2 versions prior to 19.2R2; 19.3 versions prior to 19.3R3. This issue does not affect: Juniper Networks Junos OS versions prior to 17.3R1."}, {"lang": "es", "value": "Una vulnerabilidad de Desreferencia del Puntero NULL en el demonio de servicios (cpcd) Captive Portal Content Delivery (CPCD) de Juniper Networks Junos OS, en la serie MX con MS-PIC, MS-SPC3, MS-MIC o MS-MPC, permite a un atacante enviar paquetes HTTP malformados hacia el dispositivo causando as\u00ed una Denegaci\u00f3n de Servicio (DoS), bloqueando el proceso Multiservices PIC Management Daemon (mspmand) y negando as\u00ed a los usuarios la capacidad de iniciar sesi\u00f3n, mientras que al mismo tiempo impacta otros servicios mspmand y el tr\u00e1fico por medio del dispositivo.&#xa0;La recepci\u00f3n y el procesamiento continuo de estos paquetes malformados crear\u00e1n una condici\u00f3n sostenida de Denegaci\u00f3n de Servicio (DoS).&#xa0;Mientras el PIC de servicios se reinicia, todos los servicios de PIC se omitir\u00e1n hasta que el PIC de servicios complete su proceso de inicio.&#xa0;Un atacante que env\u00eda estos paquetes HTTP malformado al dispositivo que no forma parte de la experiencia del Portal Cautivo no es capaz de explotar este problema.&#xa0;Este problema no es aplicable a las plataformas CPCD basadas en MX RE.&#xa0;Este problema afecta a: Juniper Networks Junos OS en MX Series versiones 17.3, 17.3R1 y versiones posteriores anteriores a 17.4 17.4R2-S9, 17.4R3-S2;&#xa0;versiones 18.1 anteriores a 18.1R3-S9;&#xa0;versiones 18.2 anteriores a 18.2R3-S3;&#xa0;versiones 18.3 anteriores a 18.3R3-S1;&#xa0;versiones 18.4 anteriores a 18.4R3;&#xa0;versiones 19.1 anteriores a 19.1R2-S2, 19.1R3;&#xa0;versiones 19.2 anteriores a 19.2R2;&#xa0;versiones 19.3 anteriores a 19.3R3.&#xa0;Este problema no afecta a: Juniper Networks Junos OS versiones anteriores a 17.3R1"}], "id": "CVE-2021-0251", "lastModified": "2021-04-27T17:40:15.977", "metrics": {"cvssMetricV2": [{"acInsufInfo": false, "baseSeverity": "MEDIUM", "cvssData": {"accessComplexity": "LOW", "accessVector": "NETWORK", "authentication": "NONE", "availabilityImpact": "PARTIAL", "baseScore": 5.0, "confidentialityImpact": "NONE", "integrityImpact": "NONE", "vectorString": "AV:N/AC:L/Au:N/C:N/I:N/A:P", "version": "2.0"}, "exploitabilityScore": 10.0, "impactScore": 2.9, "obtainAllPrivilege": false, "obtainOtherPrivilege": false, "obtainUserPrivilege": false, "source": "nvd@nist.gov", "type": "Primary", "userInteractionRequired": false}], "cvssMetricV31": [{"cvssData": {"attackComplexity": "LOW", "attackVector": "NETWORK", "availabilityImpact": "HIGH", "baseScore": 8.6, "baseSeverity": "HIGH", "confidentialityImpact": "NONE", "integrityImpact": "NONE", "privilegesRequired": "NONE", "scope": "CHANGED", "userInteraction": "NONE", "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:N/I:N/A:H", "version": "3.1"}, "exploitabilityScore": 3.9, "impactScore": 4.0, "source": "sirt@juniper.net", "type": "Primary"}]}, "published": "2021-04-22T20:15:09.357", "references": [{"source": "sirt@juniper.net", "tags": ["Vendor Advisory"], "url": "https://kb.juniper.net/JSA11144"}], "sourceIdentifier": "sirt@juniper.net", "vulnStatus": "Analyzed", "weaknesses": [{"description": [{"lang": "en", "value": "CWE-476"}], "source": "nvd@nist.gov", "type": "Primary"}, {"description": [{"lang": "en", "value": "CWE-476"}], "source": "sirt@juniper.net", "type": "Secondary"}]}

{}