CVE-2020-1668

{"containers": {"cna": {"affected": [{"platforms": ["EX2300 Series"], "product": "Junos OS", "vendor": "Juniper Networks", "versions": [{"lessThan": "18.1R3-S11", "status": "affected", "version": "18.1", "versionType": "custom"}, {"lessThan": "18.2R3-S5", "status": "affected", "version": "18.2", "versionType": "custom"}, {"lessThan": "18.3R2-S4, 18.3R3-S3", "status": "affected", "version": "18.3", "versionType": "custom"}, {"lessThan": "18.4R2-S5, 18.4R3-S4", "status": "affected", "version": "18.4", "versionType": "custom"}, {"lessThan": "19.1R3-S2", "status": "affected", "version": "19.1", "versionType": "custom"}, {"lessThan": "19.2R1-S5, 19.2R3", "status": "affected", "version": "19.2", "versionType": "custom"}, {"lessThan": "19.3R2-S4, 19.3R3", "status": "affected", "version": "19.3", "versionType": "custom"}, {"lessThan": "19.4R1-S3, 19.4R2-S1, 19.4R3", "status": "affected", "version": "19.4", "versionType": "custom"}, {"lessThan": "20.1R1-S2, 20.1R2", "status": "affected", "version": "20.1", "versionType": "custom"}]}], "datePublic": "2020-10-14T00:00:00.000Z", "descriptions": [{"lang": "en", "value": "On Juniper Networks EX2300 Series, receipt of a stream of specific multicast packets by the layer2 interface can cause high CPU load, which could lead to traffic interruption. This issue occurs when multicast packets are received by the layer 2 interface. To check if the device has high CPU load due to this issue, the administrator can issue the following command: user@host> show chassis routing-engine Routing Engine status: ... Idle 2 percent the \"Idle\" value shows as low (2 % in the example above), and also the following command: user@host> show system processes summary ... PID USERNAME PRI NICE SIZE RES STATE TIME WCPU COMMAND 11639 root 52 0 283M 11296K select 12:15 44.97% eventd 11803 root 81 0 719M 239M RUN 251:12 31.98% fxpc{fxpc} the eventd and the fxpc processes might use higher WCPU percentage (respectively 44.97% and 31.98% in the above example). This issue affects Juniper Networks Junos OS on EX2300 Series: 18.1 versions prior to 18.1R3-S11; 18.2 versions prior to 18.2R3-S5; 18.3 versions prior to 18.3R2-S4, 18.3R3-S3; 18.4 versions prior to 18.4R2-S5, 18.4R3-S4; 19.1 versions prior to 19.1R3-S2; 19.2 versions prior to 19.2R1-S5, 19.2R3; 19.3 versions prior to 19.3R2-S4, 19.3R3; 19.4 versions prior to 19.4R1-S3, 19.4R2-S1, 19.4R3; 20.1 versions prior to 20.1R1-S2, 20.1R2."}], "exploits": [{"lang": "en", "value": "Juniper SIRT is not aware of any malicious exploitation of this vulnerability."}], "metrics": [{"cvssV3_1": {"attackComplexity": "LOW", "attackVector": "ADJACENT_NETWORK", "availabilityImpact": "HIGH", "baseScore": 6.5, "baseSeverity": "MEDIUM", "confidentialityImpact": "NONE", "integrityImpact": "NONE", "privilegesRequired": "NONE", "scope": "UNCHANGED", "userInteraction": "NONE", "vectorString": "CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H", "version": "3.1"}}], "problemTypes": [{"descriptions": [{"cweId": "CWE-400", "description": "CWE-400 Uncontrolled Resource Consumption", "lang": "en", "type": "CWE"}]}], "providerMetadata": {"dateUpdated": "2020-10-16T20:31:29.000Z", "orgId": "8cbe9d5a-a066-4c94-8978-4b15efeae968", "shortName": "juniper"}, "references": [{"tags": ["x_refsource_CONFIRM"], "url": "https://kb.juniper.net/JSA11065"}], "solutions": [{"lang": "en", "value": "The following software releases have been updated to resolve this specific issue: Junos OS 18.1R3-S11, 18.2R3-S5, 18.3R2-S4, 18.3R3-S3, 18.4R2-S5, 18.4R3-S4, 19.1R3-S2, 19.2R1-S5, 19.2R3, 19.3R2-S4, 19.3R3, 19.4R1-S3, 19.4R2-S1, 19.4R3, 20.1R1-S2, 20.1R2, 20.2R1, and all subsequent releases."}], "source": {"advisory": "JSA11065", "defect": ["1491905"], "discovery": "USER"}, "title": "Junos OS: EX2300 Series: High CPU load due to receipt of specific multicast packets on layer 2 interface", "workarounds": [{"lang": "en", "value": "There are no available workarounds for this issue."}], "x_generator": {"engine": "Vulnogram 0.0.9"}, "x_legacyV4Record": {"CVE_data_meta": {"ASSIGNER": "sirt@juniper.net", "DATE_PUBLIC": "2020-10-14T16:00:00.000Z", "ID": "CVE-2020-1668", "STATE": "PUBLIC", "TITLE": "Junos OS: EX2300 Series: High CPU load due to receipt of specific multicast packets on layer 2 interface"}, "affects": {"vendor": {"vendor_data": [{"product": {"product_data": [{"product_name": "Junos OS", "version": {"version_data": [{"platform": "EX2300 Series", "version_affected": "<", "version_name": "18.1", "version_value": "18.1R3-S11"}, {"platform": "EX2300 Series", "version_affected": "<", "version_name": "18.2", "version_value": "18.2R3-S5"}, {"platform": "EX2300 Series", "version_affected": "<", "version_name": "18.3", "version_value": "18.3R2-S4, 18.3R3-S3"}, {"platform": "EX2300 Series", "version_affected": "<", "version_name": "18.4", "version_value": "18.4R2-S5, 18.4R3-S4"}, {"platform": "EX2300 Series", "version_affected": "<", "version_name": "19.1", "version_value": "19.1R3-S2"}, {"platform": "EX2300 Series", "version_affected": "<", "version_name": "19.2", "version_value": "19.2R1-S5, 19.2R3"}, {"platform": "EX2300 Series", "version_affected": "<", "version_name": "19.3", "version_value": "19.3R2-S4, 19.3R3"}, {"platform": "EX2300 Series", "version_affected": "<", "version_name": "19.4", "version_value": "19.4R1-S3, 19.4R2-S1, 19.4R3"}, {"platform": "EX2300 Series", "version_affected": "<", "version_name": "20.1", "version_value": "20.1R1-S2, 20.1R2"}]}}]}, "vendor_name": "Juniper Networks"}]}}, "data_format": "MITRE", "data_type": "CVE", "data_version": "4.0", "description": {"description_data": [{"lang": "eng", "value": "On Juniper Networks EX2300 Series, receipt of a stream of specific multicast packets by the layer2 interface can cause high CPU load, which could lead to traffic interruption. This issue occurs when multicast packets are received by the layer 2 interface. To check if the device has high CPU load due to this issue, the administrator can issue the following command: user@host> show chassis routing-engine Routing Engine status: ... Idle 2 percent the \"Idle\" value shows as low (2 % in the example above), and also the following command: user@host> show system processes summary ... PID USERNAME PRI NICE SIZE RES STATE TIME WCPU COMMAND 11639 root 52 0 283M 11296K select 12:15 44.97% eventd 11803 root 81 0 719M 239M RUN 251:12 31.98% fxpc{fxpc} the eventd and the fxpc processes might use higher WCPU percentage (respectively 44.97% and 31.98% in the above example). This issue affects Juniper Networks Junos OS on EX2300 Series: 18.1 versions prior to 18.1R3-S11; 18.2 versions prior to 18.2R3-S5; 18.3 versions prior to 18.3R2-S4, 18.3R3-S3; 18.4 versions prior to 18.4R2-S5, 18.4R3-S4; 19.1 versions prior to 19.1R3-S2; 19.2 versions prior to 19.2R1-S5, 19.2R3; 19.3 versions prior to 19.3R2-S4, 19.3R3; 19.4 versions prior to 19.4R1-S3, 19.4R2-S1, 19.4R3; 20.1 versions prior to 20.1R1-S2, 20.1R2."}]}, "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": "LOW", "attackVector": "ADJACENT_NETWORK", "availabilityImpact": "HIGH", "baseScore": 6.5, "baseSeverity": "MEDIUM", "confidentialityImpact": "NONE", "integrityImpact": "NONE", "privilegesRequired": "NONE", "scope": "UNCHANGED", "userInteraction": "NONE", "vectorString": "CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H", "version": "3.1"}}, "problemtype": {"problemtype_data": [{"description": [{"lang": "eng", "value": "CWE-400 Uncontrolled Resource Consumption"}]}]}, "references": {"reference_data": [{"name": "https://kb.juniper.net/JSA11065", "refsource": "CONFIRM", "url": "https://kb.juniper.net/JSA11065"}]}, "solution": [{"lang": "en", "value": "The following software releases have been updated to resolve this specific issue: Junos OS 18.1R3-S11, 18.2R3-S5, 18.3R2-S4, 18.3R3-S3, 18.4R2-S5, 18.4R3-S4, 19.1R3-S2, 19.2R1-S5, 19.2R3, 19.3R2-S4, 19.3R3, 19.4R1-S3, 19.4R2-S1, 19.4R3, 20.1R1-S2, 20.1R2, 20.2R1, and all subsequent releases."}], "source": {"advisory": "JSA11065", "defect": ["1491905"], "discovery": "USER"}, "work_around": [{"lang": "en", "value": "There are no available workarounds for this issue."}]}}, "adp": [{"providerMetadata": {"orgId": "af854a3a-2127-422b-91ae-364da2661108", "shortName": "CVE", "dateUpdated": "2024-08-04T06:46:29.743Z"}, "title": "CVE Program Container", "references": [{"tags": ["x_refsource_CONFIRM", "x_transferred"], "url": "https://kb.juniper.net/JSA11065"}]}]}, "cveMetadata": {"assignerOrgId": "8cbe9d5a-a066-4c94-8978-4b15efeae968", "assignerShortName": "juniper", "cveId": "CVE-2020-1668", "datePublished": "2020-10-16T20:31:29.123Z", "dateReserved": "2019-11-04T00:00:00.000Z", "dateUpdated": "2024-09-16T18:18:08.122Z", "state": "PUBLISHED"}, "dataType": "CVE_RECORD", "dataVersion": "5.1"}

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"cpe:2.3:o:juniper:junos:20.1:r1:*:*:*:*:*:*", "matchCriteriaId": "8328FDE6-9707-4142-B905-3B07C0E28E35", "vulnerable": true}, {"criteria": "cpe:2.3:o:juniper:junos:20.1:r1-s1:*:*:*:*:*:*", "matchCriteriaId": "41CD982F-E6F2-4951-9F96-A76C142DF08E", "vulnerable": true}], "negate": false, "operator": "OR"}, {"cpeMatch": [{"criteria": "cpe:2.3:h:juniper:ex2300:-:*:*:*:*:*:*:*", "matchCriteriaId": "3B3302CB-457F-4BD2-B80B-F70FB4C4542E", "vulnerable": false}], "negate": false, "operator": "OR"}], "operator": "AND"}], "cveTags": [], "descriptions": [{"lang": "en", "value": "On Juniper Networks EX2300 Series, receipt of a stream of specific multicast packets by the layer2 interface can cause high CPU load, which could lead to traffic interruption. This issue occurs when multicast packets are received by the layer 2 interface. To check if the device has high CPU load due to this issue, the administrator can issue the following command: user@host> show chassis routing-engine Routing Engine status: ... Idle 2 percent the \"Idle\" value shows as low (2 % in the example above), and also the following command: user@host> show system processes summary ... PID USERNAME PRI NICE SIZE RES STATE TIME WCPU COMMAND 11639 root 52 0 283M 11296K select 12:15 44.97% eventd 11803 root 81 0 719M 239M RUN 251:12 31.98% fxpc{fxpc} the eventd and the fxpc processes might use higher WCPU percentage (respectively 44.97% and 31.98% in the above example). This issue affects Juniper Networks Junos OS on EX2300 Series: 18.1 versions prior to 18.1R3-S11; 18.2 versions prior to 18.2R3-S5; 18.3 versions prior to 18.3R2-S4, 18.3R3-S3; 18.4 versions prior to 18.4R2-S5, 18.4R3-S4; 19.1 versions prior to 19.1R3-S2; 19.2 versions prior to 19.2R1-S5, 19.2R3; 19.3 versions prior to 19.3R2-S4, 19.3R3; 19.4 versions prior to 19.4R1-S3, 19.4R2-S1, 19.4R3; 20.1 versions prior to 20.1R1-S2, 20.1R2."}, {"lang": "es", "value": "En Juniper Networks EX2300 Series, la recepci\u00f3n de un flujo de paquetes de multidifusi\u00f3n espec\u00edficos por la interfaz de capa 2 puede causar una alta carga de la CPU, lo que podr\u00eda conllevar la interrupci\u00f3n del tr\u00e1fico.&#xa0;Este problema ocurre cuando paquetes de multidifusi\u00f3n son recibidos por la interfaz de capa 2.&#xa0;Para comprobar si el dispositivo presenta una alta carga de la CPU debido a este problema, el administrador puede ejecutar el siguiente comando: user@host) show chassis routing-engine Routing Engine status: ... Idle 2 percent the \"Idle\" value shows as low (2 % in the example above), and also the following command: user@host) show system processes summary ... PID USERNAME PRI NICE SIZE RES STATE TIME WCPU COMMAND 11639 root 52 0 283M 11296K select 12:15 44.97% eventd 11803 root 81 0 719M 239M RUN 251:12 31.98% fxpc{fxpc} the eventd and the fxpc processes might use higher WCPU percentage (respectively 44.97% and 31.98% in the above example).&#xa0;Este problema afecta a Juniper Networks Junos OS en EX2300 series: versiones 18.1 anteriores a 18.1R3-S11;&#xa0;versiones 18.2 anteriores a 18.2R3-S5;&#xa0;versiones 18.3 anteriores a 18.3R2-S4, 18.3R3-S3;&#xa0;versiones 18.4 anteriores a 18.4R2-S5, 18.4R3-S4;&#xa0;versiones 19.1 anteriores a 19.1R3-S2;&#xa0;versiones 19.2 anteriores a 19.2R1-S5, 19.2R3;&#xa0;versiones 19.3 anteriores a 19.3R2-S4, 19.3R3;&#xa0;versiones 19.4 anteriores a 19.4R1-S3, 19.4R2-S1, 19.4R3;&#xa0;versiones 20.1 anteriores a 20.1R1-S2, 20.1R2.&#xa0;19,4R2-S1, versiones 20.1 anteriores a 20.1R1-S2, 20.1R2.&#xa0;19,4R2-S1, 19,4R3;&#xa0;versiones 20.1 anteriores a 20.1R1-S2, 20.1R2"}], "id": "CVE-2020-1668", "lastModified": "2026-06-17T03:02:09.640", "metrics": {"cvssMetricV2": [{"acInsufInfo": false, "baseSeverity": "LOW", "cvssData": {"accessComplexity": "LOW", "accessVector": "ADJACENT_NETWORK", "authentication": "NONE", "availabilityImpact": "PARTIAL", "baseScore": 3.3, "confidentialityImpact": "NONE", "integrityImpact": "NONE", "vectorString": "AV:A/AC:L/Au:N/C:N/I:N/A:P", "version": "2.0"}, "exploitabilityScore": 6.5, "impactScore": 2.9, "obtainAllPrivilege": false, "obtainOtherPrivilege": false, "obtainUserPrivilege": false, "source": "nvd@nist.gov", "type": "Primary", "userInteractionRequired": false}], "cvssMetricV31": [{"cvssData": {"attackComplexity": "LOW", "attackVector": "ADJACENT_NETWORK", "availabilityImpact": "HIGH", "baseScore": 6.5, "baseSeverity": "MEDIUM", "confidentialityImpact": "NONE", "integrityImpact": "NONE", "privilegesRequired": "NONE", "scope": "UNCHANGED", "userInteraction": "NONE", "vectorString": "CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H", "version": "3.1"}, "exploitabilityScore": 2.8, "impactScore": 3.6, "source": "sirt@juniper.net", "type": "Secondary"}]}, "published": "2020-10-16T21:15:12.817", "references": [{"source": "sirt@juniper.net", "tags": ["Vendor Advisory"], "url": "https://kb.juniper.net/JSA11065"}, {"source": "af854a3a-2127-422b-91ae-364da2661108", "tags": ["Vendor Advisory"], "url": "https://kb.juniper.net/JSA11065"}], "sourceIdentifier": "sirt@juniper.net", "vulnStatus": "Modified", "weaknesses": [{"description": [{"lang": "en", "value": "CWE-400"}], "source": "sirt@juniper.net", "type": "Secondary"}, {"description": [{"lang": "en", "value": "NVD-CWE-noinfo"}], "source": "nvd@nist.gov", "type": "Primary"}]}

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