{"containers": {"cna": {"affected": [{"product": "Junos OS", "vendor": "Juniper Networks", "versions": [{"lessThan": "19.3R1", "status": "unaffected", "version": "unspecified", "versionType": "custom"}]}, {"platforms": ["MX Series"], "product": "Junos OS", "vendor": "Juniper Networks", "versions": [{"lessThan": "19.3R3-S2", "status": "affected", "version": "19.3", "versionType": "custom"}, {"lessThan": "19.4R3-S2", "status": "affected", "version": "19.4", "versionType": "custom"}, {"lessThan": "20.1R3", "status": "affected", "version": "20.1", "versionType": "custom"}, {"lessThan": "20.2R2-S2, 20.2R3", "status": "affected", "version": "20.2", "versionType": "custom"}, {"lessThan": "20.3R3", "status": "affected", "version": "20.3", "versionType": "custom"}, {"lessThan": "20.4R2", "status": "affected", "version": "20.4", "versionType": "custom"}]}, {"platforms": ["PTX10003, PTX10008"], "product": "Junos OS Evolved", "vendor": "Juniper Networks", "versions": [{"lessThan": "20.4R2-EVO", "status": "affected", "version": "unspecified", "versionType": "custom"}]}], "configurations": [{"lang": "en", "value": "An example of a vulnerable configuration is shown below:\n\n user@router>show configuration firewall family inet filter protect-re | display set\n set firewall family inet filter protect-re term reject-everything-else then count discard-counter\n set firewall family inet filter protect-re term reject-everything-else then syslog\n set firewall family inet filter protect-re term reject-everything-else then discard"}], "datePublic": "2021-04-14T00:00:00", "descriptions": [{"lang": "en", "value": "A vulnerability in the processing of traffic matching a firewall filter containing a syslog action in Juniper Networks Junos OS on MX Series with MPC10/MPC11 cards installed, PTX10003 and PTX10008 Series devices, will cause the line card to crash and restart, creating a Denial of Service (DoS). 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Continued receipt and processing of packets matching the firewall filter can create a sustained Denial of Service (DoS) condition. When traffic hits the firewall filter, configured on lo0 or any physical interface on the line card, containing a term with a syslog action (e.g. 'term <name> then syslog'), the affected line card will crash and restart, impacting traffic processing through the ports of the line card. This issue only affects MX Series routers with MPC10 or MPC11 line cards, and PTX10003 or PTX10008 Series packet transport routers. No other platforms or models of line cards are affected by this issue. Note: This issue has also been identified and described in technical service bulletin TSB17931 (login required). This issue affects: Juniper Networks Junos OS on MX Series: 19.3 versions prior to 19.3R3-S2; 19.4 versions prior to 19.4R3-S2; 20.1 versions prior to 20.1R3; 20.2 versions prior to 20.2R2-S2, 20.2R3; 20.3 versions prior to 20.3R3; 20.4 versions prior to 20.4R2. Juniper Networks Junos OS Evolved on PTX10003, PTX10008: All versions prior to 20.4R2-EVO. This issue does not affect Juniper Networks Junos OS versions prior to 19.3R1."}, {"lang": "es", "value": "Una vulnerabilidad en el procesamiento del tr\u00e1fico que coincide con un filtro de firewall que contiene una acci\u00f3n de syslog en Juniper Networks Junos OS en la Serie MX con tarjetas MPC10/MPC11 instaladas, dispositivos de la Serie PTX10003 y PTX10008, causar\u00e1 que la tarjeta de l\u00ednea se bloquee y se reinicie, creando una Denegaci\u00f3n de Servicio (DoS). La recepci\u00f3n y el procesamiento continuo de paquetes que coinciden con el filtro de firewall puede crear una condici\u00f3n sostenida de Denegaci\u00f3n de Servicio (DoS). Cuando el tr\u00e1fico llega al filtro de firewall, configurado en lo0 o cualquier interfaz f\u00edsica en la tarjeta de l\u00ednea, que contiene un t\u00e9rmino con una acci\u00f3n de syslog (por ejemplo \"term then syslog\"), la tarjeta de l\u00ednea afectada se bloquear\u00e1 y reiniciar\u00e1, lo que afectar\u00e1 el procesamiento del tr\u00e1fico por medio de los puertos de la tarjeta de l\u00ednea. Este problema solo afecta a los enrutadores de la serie MX con tarjetas de l\u00ednea MPC10 o MPC11 y a los enrutadores de transporte de paquetes de las series PTX10003 o PTX10008. Este problema no afecta a otras plataformas o modelos de tarjetas de l\u00ednea. Nota: Este problema tambi\u00e9n se ha identificado y descrito en el bolet\u00edn de servicio t\u00e9cnico TSB17931 (es necesario iniciar sesi\u00f3n). Este problema afecta a: Juniper Networks Junos OS en la serie MX: versiones 19.3 anteriores a 19.3R3-S2; versiones 19.4 anteriores a 19.4R3-S2; 20.1 versiones anteriores a 20.1R3; versiones 20.2 anteriores a 20.2R2-S2, 20.2R3; versiones 20.3 anteriores a 20.3R3; versiones 20.4 anteriores a 20.4R2. Juniper Networks Junos OS Evolved en PTX10003, PTX10008: Todas las versiones anteriores a 20.4R2-EVO. Este problema no afecta a Juniper Networks Junos OS versiones anteriores a 19.3R1"}], "id": "CVE-2021-0264", "lastModified": "2024-11-21T05:42:21.163", "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": "HIGH", "attackVector": "NETWORK", "availabilityImpact": "HIGH", "baseScore": 5.9, "baseSeverity": "MEDIUM", "confidentialityImpact": "NONE", "integrityImpact": "NONE", "privilegesRequired": "NONE", "scope": "UNCHANGED", "userInteraction": "NONE", "vectorString": "CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:H", "version": "3.1"}, "exploitabilityScore": 2.2, "impactScore": 3.6, "source": "sirt@juniper.net", "type": "Secondary"}, {"cvssData": {"attackComplexity": "LOW", "attackVector": "NETWORK", "availabilityImpact": "HIGH", "baseScore": 7.5, "baseSeverity": "HIGH", "confidentialityImpact": "NONE", "integrityImpact": "NONE", "privilegesRequired": "NONE", "scope": "UNCHANGED", "userInteraction": "NONE", "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H", "version": "3.1"}, "exploitabilityScore": 3.9, "impactScore": 3.6, "source": "nvd@nist.gov", "type": "Primary"}]}, "published": "2021-04-22T20:15:09.810", "references": [{"source": "sirt@juniper.net", "tags": ["Vendor Advisory"], "url": "https://kb.juniper.net/JSA11155"}, {"source": "sirt@juniper.net", "tags": ["Permissions Required", "Vendor Advisory"], "url": "https://kb.juniper.net/TSB17931"}, {"source": "af854a3a-2127-422b-91ae-364da2661108", "tags": ["Vendor Advisory"], "url": "https://kb.juniper.net/JSA11155"}, {"source": "af854a3a-2127-422b-91ae-364da2661108", "tags": ["Permissions Required", "Vendor Advisory"], "url": "https://kb.juniper.net/TSB17931"}], "sourceIdentifier": "sirt@juniper.net", "vulnStatus": "Modified", "weaknesses": [{"description": [{"lang": "en", "value": "CWE-703"}], "source": "sirt@juniper.net", "type": "Secondary"}, {"description": [{"lang": "en", "value": "CWE-755"}], "source": "nvd@nist.gov", "type": "Primary"}]}

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