{"containers": {"cna": {"affected": [{"platforms": ["MX Series"], "product": "Junos OS", "vendor": "Juniper Networks", "versions": [{"lessThan": "17.4R2-S9, 17.4R3", "status": "affected", "version": "17.4", "versionType": "custom"}, {"lessThan": "18.1R3-S9", "status": "affected", "version": "18.1", "versionType": "custom"}, {"lessThan": "18.2R2-S7, 18.2R3-S3", "status": "affected", "version": "18.2", "versionType": "custom"}, {"lessThan": "18.2X75-D33, 18.2X75-D411, 18.2X75-D420, 18.2X75-D60", "status": "affected", "version": "18.2X75", "versionType": "custom"}, {"lessThan": "18.3R1-S7, 18.3R2-S3, 18.3R3", "status": "affected", "version": "18.3", "versionType": "custom"}, {"lessThan": "18.4R1-S5, 18.4R2-S2, 18.4R3", "status": "affected", "version": "18.4", "versionType": "custom"}, {"lessThan": "19.1R1-S4, 19.1R2", "status": "affected", "version": "19.1", "versionType": "custom"}, {"lessThan": "19.2R1-S3, 19.2R2", "status": "affected", "version": "19.2", "versionType": "custom"}]}], "configurations": [{"lang": "en", "value": "The proxy ARP/NDP feature is enabled by default for EVPNs. 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This issue affects Juniper Networks Junos OS: 17.4 versions prior to 17.4R2-S9, 17.4R3 on MX Series; 18.1 versions prior to 18.1R3-S9 on MX Series; 18.2 versions prior to 18.2R2-S7, 18.2R3-S3 on MX Series; 18.2X75 versions prior to 18.2X75-D33, 18.2X75-D411, 18.2X75-D420, 18.2X75-D60 on MX Series; 18.3 versions prior to 18.3R1-S7, 18.3R2-S3, 18.3R3 on MX Series; 18.4 versions prior to 18.4R1-S5, 18.4R2-S2, 18.4R3 on MX Series; 19.1 versions prior to 19.1R1-S4, 19.1R2 on MX Series; 19.2 versions prior to 19.2R1-S3, 19.2R2 on MX Series."}]}, "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": 7.4, "baseSeverity": "HIGH", "confidentialityImpact": "NONE", "integrityImpact": "NONE", "privilegesRequired": "NONE", "scope": "CHANGED", "userInteraction": "NONE", "vectorString": "CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:C/C:N/I:N/A:H", "version": "3.1"}}, "problemtype": {"problemtype_data": [{"description": [{"lang": "eng", "value": "CWE-20 Improper Input Validation"}]}]}, "references": {"reference_data": [{"name": "https://kb.juniper.net/JSA11012", "refsource": "CONFIRM", "url": "https://kb.juniper.net/JSA11012"}]}, "solution": [{"lang": "en", "value": "The following software releases have been updated to resolve this specific issue: 17.4R2-S9, 17.4R3, 18.1R3-S9, 18.2R2-S7, 18.2R3-S3, 18.2X75-D33, 18.2X75-D411, 18.2X75-D420, 18.2X75-D60, 18.3R1-S7, 18.3R2-S3, 18.3R3, 18.3R3-S1, 18.4R1-S5, 18.4R2-S2, 18.4R3, 19.1R1-S4, 19.1R2, 19.2R1-S3, 19.2R2, 19.3R1, 19.4R1, and all subsequent releases."}], "source": {"advisory": "JSA11012", "defect": ["1451959"], "discovery": "USER"}, "work_around": [{"lang": "en", "value": "Configure 'no-arp-suppression' to disable Proxy ARP/NDP feature. 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"descriptions": [{"lang": "en", "value": "Due to a new NDP proxy feature for EVPN leaf nodes introduced in Junos OS 17.4, crafted NDPv6 packets could transit a Junos device configured as a Broadband Network Gateway (BNG) and reach the EVPN leaf node, causing a stale MAC address entry. This could cause legitimate traffic to be discarded, leading to a Denial of Service (DoS) condition. This issue only affects Junos OS 17.4 and later releases. Prior releases do not support this feature and are unaffected by this vulnerability. This issue only affects IPv6. IPv4 ARP proxy is unaffected by this vulnerability. This issue affects Juniper Networks Junos OS: 17.4 versions prior to 17.4R2-S9, 17.4R3 on MX Series; 18.1 versions prior to 18.1R3-S9 on MX Series; 18.2 versions prior to 18.2R2-S7, 18.2R3-S3 on MX Series; 18.2X75 versions prior to 18.2X75-D33, 18.2X75-D411, 18.2X75-D420, 18.2X75-D60 on MX Series; 18.3 versions prior to 18.3R1-S7, 18.3R2-S3, 18.3R3 on MX Series; 18.4 versions prior to 18.4R1-S5, 18.4R2-S2, 18.4R3 on MX Series; 19.1 versions prior to 19.1R1-S4, 19.1R2 on MX Series; 19.2 versions prior to 19.2R1-S3, 19.2R2 on MX Series."}, {"lang": "es", "value": "Debido a una nueva funcionalidad de proxy NDP para los nodos leaf de EVPN introducidos en Junos OS versi\u00f3n 17.4, los paquetes NDPv6 dise\u00f1ados podr\u00edan transitar un dispositivo Junos configurado como una Broadband Network Gateway (BNG) y llegar al nodo leaf de EVPN, causando una entrada de direcci\u00f3n MAC obsoleta. Esto podr\u00eda causar que sea descartado el tr\u00e1fico leg\u00edtimo, lo que conllevar\u00eda a una condici\u00f3n de Denegaci\u00f3n de Servicio (DoS). Este problema solo afecta a Junos OS versiones 17.4 y posteriores. Las versiones anteriores no admiten esta funcionalidad y no est\u00e1n afectadas por esta vulnerabilidad. Este problema solo afecta a IPv6. El proxy ARP de IPv4 no est\u00e1 afectado por esta vulnerabilidad. Este problema afecta a Juniper Networks Junos OS: versiones 17.4 anteriores a 17.4R2-S9, 17.4R3 en MX Series; versiones 18.1 anteriores a 18.1R3-S9 en MX Series; versiones 18.2 anteriores a 18.2R2-S7, 18.2R3-S3 en MX Series; versiones 18.2X75 anteriores a 18.2X75-D33, 18.2X75-D411, 18.2X75-D420, 18.2X75-D60 en MX Series; versiones 18.3 anteriores a 18.3R1-S7, 18.3R2-S3, 18.3R3 en MX Series; versiones 18.4 anteriores a 18.4R1-S5, 18.4R2-S2, 18.4R3 en MX Series; versiones 19.1 anteriores a 19.1R1-S4, 19.1R2 en MX Series; versiones 19.2 anteriores a 19.2R1-S3, 19.2R2 en MX Series."}], "id": "CVE-2020-1633", "lastModified": "2024-11-21T05:11:02.837", "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": "[email protected]", "type": "Primary", "userInteractionRequired": false}], "cvssMetricV31": [{"cvssData": {"attackComplexity": "LOW", "attackVector": "ADJACENT_NETWORK", "availabilityImpact": "HIGH", "baseScore": 7.4, "baseSeverity": "HIGH", "confidentialityImpact": "NONE", "integrityImpact": "NONE", "privilegesRequired": "NONE", "scope": "CHANGED", "userInteraction": "NONE", "vectorString": "CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:C/C:N/I:N/A:H", "version": "3.1"}, "exploitabilityScore": 2.8, "impactScore": 4.0, "source": "[email protected]", "type": "Secondary"}, {"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": "[email protected]", "type": "Primary"}]}, "published": "2020-04-09T23:15:12.983", "references": [{"source": "[email protected]", "tags": ["Vendor Advisory"], "url": "https://kb.juniper.net/JSA11012"}, {"source": "af854a3a-2127-422b-91ae-364da2661108", "tags": ["Vendor Advisory"], "url": "https://kb.juniper.net/JSA11012"}], "sourceIdentifier": "[email protected]", "vulnStatus": "Modified", "weaknesses": [{"description": [{"lang": "en", "value": "CWE-20"}], "source": "[email protected]", "type": "Secondary"}, {"description": [{"lang": "en", "value": "NVD-CWE-noinfo"}], "source": "[email protected]", "type": "Primary"}]}

{}