{"containers": {"cna": {"affected": [{"platforms": ["SRX300 Series, SRX500 Series, SRX1500, and SRX5000 Series with SPC2"], "product": "Junos OS", "vendor": "Juniper Networks", "versions": [{"lessThan": "17.4R3-S5", "status": "affected", "version": "unspecified", "versionType": "custom"}, {"lessThan": "18.3R3-S5", "status": "affected", "version": "18.3", "versionType": "custom"}, {"lessThan": "18.4R3-S9", "status": "affected", "version": "18.4", "versionType": "custom"}, {"lessThan": "19.1R3-S6", "status": "affected", "version": "19.1", "versionType": "custom"}, {"lessThan": "19.2R1-S7, 19.2R3-S2", "status": "affected", "version": "19.2", "versionType": "custom"}, {"lessThan": "19.3R2-S6, 19.3R3-S2", "status": "affected", "version": "19.3", "versionType": "custom"}, {"lessThan": "19.4R1-S4, 19.4R3-S3", "status": "affected", "version": "19.4", "versionType": "custom"}, {"lessThan": "20.1R2-S2, 20.1R3", "status": "affected", "version": "20.1", "versionType": "custom"}, {"lessThan": "20.2R3", "status": "affected", "version": "20.2", "versionType": "custom"}, {"lessThan": "20.3R2-S1, 20.3R3", "status": "affected", "version": "20.3", "versionType": "custom"}, {"lessThan": "20.4R2", "status": "affected", "version": "20.4", "versionType": "custom"}]}], "configurations": [{"lang": "en", "value": "This issue can only occur when logging for session-close is configured similar to the following example:\n\n [security policies from-zone untrust to-zone trust policy policy_name then log session-close]\n"}], "datePublic": "2021-10-13T00:00:00", "descriptions": [{"lang": "en", "value": "An Improper Check for Unusual or Exceptional Conditions vulnerability combined with a Race Condition in the flow daemon (flowd) of Juniper Networks Junos OS on SRX300 Series, SRX500 Series, SRX1500, and SRX5000 Series with SPC2 allows an unauthenticated network based attacker sending specific traffic to cause a crash of the flowd/srxpfe process, responsible for traffic forwarding in SRX, which will cause a Denial of Service (DoS). Continued receipt and processing of this specific traffic will create a sustained Denial of Service (DoS) condition. This issue can only occur when specific packets are trying to create the same session and logging for session-close is configured as a policy action. Affected platforms are: SRX300 Series, SRX500 Series, SRX1500, and SRX5000 Series with SPC2. Not affected platforms are: SRX4000 Series, SRX5000 Series with SPC3, and vSRX Series. This issue affects Juniper Networks Junos OS SRX300 Series, SRX500 Series, SRX1500, and SRX5000 Series with SPC2: All versions prior to 17.4R3-S5; 18.3 versions prior to 18.3R3-S5; 18.4 versions prior to 18.4R3-S9; 19.1 versions prior to 19.1R3-S6; 19.2 versions prior to 19.2R1-S7, 19.2R3-S2; 19.3 versions prior to 19.3R2-S6, 19.3R3-S2; 19.4 versions prior to 19.4R1-S4, 19.4R3-S3; 20.1 versions prior to 20.1R2-S2, 20.1R3; 20.2 versions prior to 20.2R3; 20.3 versions prior to 20.3R2-S1, 20.3R3; 20.4 versions prior to 20.4R2."}], "exploits": [{"lang": "en", "value": "Juniper SIRT is not aware of any malicious exploitation of this vulnerability."}], "metrics": [{"cvssV3_1": {"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"}}], "problemTypes": [{"descriptions": [{"cweId": "CWE-754", "description": "CWE-754 Improper Check for Unusual or Exceptional Conditions", "lang": "en", "type": "CWE"}]}, {"descriptions": [{"description": "Denial of Service (DoS)", "lang": "en", "type": "text"}]}, {"descriptions": [{"cweId": "CWE-362", "description": "CWE-362 Race Condition (Concurrent Execution using Shared Resource with Improper Synchronization)", "lang": "en", "type": "CWE"}]}], "providerMetadata": {"dateUpdated": "2021-10-19T18:16:52", "orgId": "8cbe9d5a-a066-4c94-8978-4b15efeae968", "shortName": "juniper"}, "references": [{"tags": ["x_refsource_CONFIRM"], "url": "https://kb.juniper.net/JSA11226"}], "solutions": [{"lang": "en", "value": "The following software releases have been updated to resolve this specific issue: 17.4R3-S5, 18.3R3-S5, 18.4R3-S9, 19.1R3-S6, 19.2R1-S7, 19.2R3-S2, 19.3R2-S6, 19.3R3-S2, 19.4R1-S4, 19.4R3-S3, 20.1R2-S2, 20.1R3, 20.2R3, 20.3R2-S1, 20.3R3, 20.4R2, 21.1R1, and all subsequent releases."}], "source": {"advisory": "JSA11226", "defect": ["1571354"], "discovery": "USER"}, "title": "Junos OS: SRX Series: The flowd process will crash if log session-close is configured and specific traffic is received", "workarounds": [{"lang": "en", "value": "Please remove the session-close log action from the policy actions of all policies."}], "x_generator": {"engine": "Vulnogram 0.0.9"}, "x_legacyV4Record": {"CVE_data_meta": {"ASSIGNER": "sirt@juniper.net", "DATE_PUBLIC": "2021-10-13T16:00:00.000Z", "ID": "CVE-2021-31364", "STATE": "PUBLIC", "TITLE": "Junos OS: SRX Series: The flowd process will crash if log session-close is configured and specific traffic is received"}, "affects": {"vendor": {"vendor_data": [{"product": {"product_data": [{"product_name": "Junos OS", "version": {"version_data": [{"platform": "SRX300 Series, SRX500 Series, SRX1500, and SRX5000 Series with SPC2", "version_affected": "<", "version_value": "17.4R3-S5"}, {"platform": "SRX300 Series, SRX500 Series, SRX1500, and SRX5000 Series with SPC2", "version_affected": "<", "version_name": "18.3", "version_value": "18.3R3-S5"}, {"platform": "SRX300 Series, SRX500 Series, SRX1500, and SRX5000 Series with SPC2", "version_affected": "<", "version_name": "18.4", "version_value": "18.4R3-S9"}, {"platform": "SRX300 Series, SRX500 Series, SRX1500, and SRX5000 Series with SPC2", "version_affected": "<", "version_name": "19.1", "version_value": "19.1R3-S6"}, {"platform": "SRX300 Series, SRX500 Series, SRX1500, and SRX5000 Series with SPC2", "version_affected": "<", "version_name": "19.2", "version_value": "19.2R1-S7, 19.2R3-S2"}, {"platform": "SRX300 Series, SRX500 Series, SRX1500, and SRX5000 Series with SPC2", "version_affected": "<", "version_name": "19.3", "version_value": "19.3R2-S6, 19.3R3-S2"}, {"platform": "SRX300 Series, SRX500 Series, SRX1500, and SRX5000 Series with SPC2", "version_affected": "<", "version_name": 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session-close]\n"}], "data_format": "MITRE", "data_type": "CVE", "data_version": "4.0", "description": {"description_data": [{"lang": "eng", "value": "An Improper Check for Unusual or Exceptional Conditions vulnerability combined with a Race Condition in the flow daemon (flowd) of Juniper Networks Junos OS on SRX300 Series, SRX500 Series, SRX1500, and SRX5000 Series with SPC2 allows an unauthenticated network based attacker sending specific traffic to cause a crash of the flowd/srxpfe process, responsible for traffic forwarding in SRX, which will cause a Denial of Service (DoS). Continued receipt and processing of this specific traffic will create a sustained Denial of Service (DoS) condition. This issue can only occur when specific packets are trying to create the same session and logging for session-close is configured as a policy action. Affected platforms are: SRX300 Series, SRX500 Series, SRX1500, and SRX5000 Series with SPC2. Not affected platforms are: SRX4000 Series, SRX5000 Series with SPC3, and vSRX Series. This issue affects Juniper Networks Junos OS SRX300 Series, SRX500 Series, SRX1500, and SRX5000 Series with SPC2: All versions prior to 17.4R3-S5; 18.3 versions prior to 18.3R3-S5; 18.4 versions prior to 18.4R3-S9; 19.1 versions prior to 19.1R3-S6; 19.2 versions prior to 19.2R1-S7, 19.2R3-S2; 19.3 versions prior to 19.3R2-S6, 19.3R3-S2; 19.4 versions prior to 19.4R1-S4, 19.4R3-S3; 20.1 versions prior to 20.1R2-S2, 20.1R3; 20.2 versions prior to 20.2R3; 20.3 versions prior to 20.3R2-S1, 20.3R3; 20.4 versions prior to 20.4R2."}]}, "exploit": [{"lang": "en", "value": "Juniper SIRT is not aware of any malicious exploitation of this vulnerability."}], "generator": {"engine": "Vulnogram 0.0.9"}, "impact": {"cvss": {"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"}}, "problemtype": {"problemtype_data": [{"description": [{"lang": "eng", "value": "CWE-754 Improper Check for Unusual or Exceptional Conditions"}]}, {"description": [{"lang": "eng", "value": "Denial of Service (DoS)"}]}, {"description": [{"lang": "eng", "value": "CWE-362 Race Condition (Concurrent Execution using Shared Resource with Improper Synchronization)"}]}]}, "references": {"reference_data": [{"name": "https://kb.juniper.net/JSA11226", "refsource": "CONFIRM", "url": "https://kb.juniper.net/JSA11226"}]}, "solution": [{"lang": "en", "value": "The following software releases have been updated to resolve this specific issue: 17.4R3-S5, 18.3R3-S5, 18.4R3-S9, 19.1R3-S6, 19.2R1-S7, 19.2R3-S2, 19.3R2-S6, 19.3R3-S2, 19.4R1-S4, 19.4R3-S3, 20.1R2-S2, 20.1R3, 20.2R3, 20.3R2-S1, 20.3R3, 20.4R2, 21.1R1, and all subsequent releases."}], "source": {"advisory": "JSA11226", "defect": ["1571354"], "discovery": "USER"}, "work_around": [{"lang": "en", "value": "Please remove the session-close log action from the policy actions of all policies."}]}}}, "cveMetadata": {"assignerOrgId": "8cbe9d5a-a066-4c94-8978-4b15efeae968", "assignerShortName": "juniper", "cveId": "CVE-2021-31364", "datePublished": "2021-10-13T00:00:00", "dateReserved": "2021-04-15T00:00:00", "dateUpdated": "2021-10-19T18:16:52", "state": "PUBLISHED"}, "dataType": "CVE_RECORD", "dataVersion": "5.0"}

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Continued receipt and processing of this specific traffic will create a sustained Denial of Service (DoS) condition. This issue can only occur when specific packets are trying to create the same session and logging for session-close is configured as a policy action. Affected platforms are: SRX300 Series, SRX500 Series, SRX1500, and SRX5000 Series with SPC2. Not affected platforms are: SRX4000 Series, SRX5000 Series with SPC3, and vSRX Series. This issue affects Juniper Networks Junos OS SRX300 Series, SRX500 Series, SRX1500, and SRX5000 Series with SPC2: All versions prior to 17.4R3-S5; 18.3 versions prior to 18.3R3-S5; 18.4 versions prior to 18.4R3-S9; 19.1 versions prior to 19.1R3-S6; 19.2 versions prior to 19.2R1-S7, 19.2R3-S2; 19.3 versions prior to 19.3R2-S6, 19.3R3-S2; 19.4 versions prior to 19.4R1-S4, 19.4R3-S3; 20.1 versions prior to 20.1R2-S2, 20.1R3; 20.2 versions prior to 20.2R3; 20.3 versions prior to 20.3R2-S1, 20.3R3; 20.4 versions prior to 20.4R2."}, {"lang": "es", "value": "Una vulnerabilidad de comprobaci\u00f3n inapropiada de condiciones inusuales o excepcionales combinada con una condici\u00f3n de carrera en el demonio de flujo (flowd) de Juniper Networks Junos OS en las series SRX300, SRX500, SRX1500 y SRX5000 con SPC2 permite a un atacante no autenticado basado en la red enviar un tr\u00e1fico espec\u00edfico cause un bloqueo del proceso flowd/srxpfe, responsable del reenv\u00edo de tr\u00e1fico en SRX, que causar\u00e1 una Denegaci\u00f3n de Servicio (DoS). La recepci\u00f3n y el procesamiento continuado de este tr\u00e1fico espec\u00edfico crear\u00e1 una condici\u00f3n de Denegaci\u00f3n de Servicio (DoS) sostenida. Este problema s\u00f3lo puede producirse cuando se presentan paquetes espec\u00edficos que intentan crear la misma sesi\u00f3n y el registro para el cierre de la sesi\u00f3n est\u00e1 configurado como una acci\u00f3n de pol\u00edtica. Las plataformas afectadas son: Serie SRX300, Serie SRX500, Serie SRX1500 y Serie SRX5000 con SPC2. Las plataformas no afectadas son: Serie SRX4000, Serie SRX5000 con SPC3 y Serie vSRX. Este problema afecta a las series SRX300, SRX500, SRX1500 y SRX5000 de Juniper Networks con SPC2: Todas las versiones anteriores a 17.4R3-S5; las versiones 18.3 anteriores a 18.3R3-S5; las versiones 18.4 anteriores a 18.4R3-S9; las versiones 19.1 anteriores a 19.1R3-S6; las versiones 19.2 anteriores a 19.2R1-S7, 19.2R3-S2; las versiones 19.3 anteriores a 19. 3R2-S6, 19.3R3-S2; versiones 19.4 anteriores a 19.4R1-S4, 19.4R3-S3; versiones 20.1 anteriores a 20.1R2-S2, 20.1R3; versiones 20.2 anteriores a 20.2R3; versiones 20.3 anteriores a 20.3R2-S1, 20.3R3; versiones 20.4 anteriores a 20.4R2"}], "id": "CVE-2021-31364", "lastModified": "2021-10-27T00:38:22.540", "metrics": {"cvssMetricV2": [{"acInsufInfo": false, "baseSeverity": "MEDIUM", "cvssData": {"accessComplexity": "MEDIUM", "accessVector": "NETWORK", "authentication": "NONE", "availabilityImpact": "PARTIAL", "baseScore": 4.3, "confidentialityImpact": "NONE", "integrityImpact": "NONE", "vectorString": "AV:N/AC:M/Au:N/C:N/I:N/A:P", "version": "2.0"}, "exploitabilityScore": 8.6, "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": "Primary"}]}, "published": "2021-10-19T19:15:09.370", "references": [{"source": "sirt@juniper.net", "tags": ["Patch", "Vendor Advisory"], "url": "https://kb.juniper.net/JSA11226"}], "sourceIdentifier": "sirt@juniper.net", "vulnStatus": "Analyzed", "weaknesses": [{"description": [{"lang": "en", "value": "CWE-362"}, {"lang": "en", "value": "CWE-754"}], "source": "nvd@nist.gov", "type": "Primary"}, {"description": [{"lang": "en", "value": "CWE-362"}, {"lang": "en", "value": "CWE-754"}], "source": "sirt@juniper.net", "type": "Secondary"}]}

{}