{"containers": {"cna": {"affected": [{"platforms": ["MX Series"], "product": "Junos OS", "vendor": "Juniper Networks", "versions": [{"lessThan": "17.3R3-S10", "status": "affected", "version": "17.3", "versionType": "custom"}, {"lessThan": "17.4R3-S3", "status": "affected", "version": "17.4", "versionType": "custom"}, {"lessThan": "18.1R3-S11", "status": "affected", "version": "18.1", "versionType": "custom"}, {"lessThan": "18.2R3-S6", "status": "affected", "version": "18.2", "versionType": "custom"}, {"lessThan": "18.3R3-S4", "status": "affected", "version": "18.3", "versionType": "custom"}, {"lessThan": "18.4R3-S6", "status": "affected", "version": "18.4", "versionType": "custom"}, {"lessThan": "19.1R2-S2, 19.1R3-S3", "status": "affected", "version": "19.1", "versionType": "custom"}, {"lessThan": "19.2R3-S1", "status": "affected", "version": "19.2", "versionType": "custom"}, {"lessThan": "19.3R2-S5, 19.3R3-S1", "status": "affected", "version": "19.3", "versionType": "custom"}, {"lessThan": "19.4R3", "status": "affected", "version": "19.4", "versionType": "custom"}, {"lessThan": "20.1R2", "status": "affected", "version": "20.1", "versionType": "custom"}, {"lessThan": "20.2R2", "status": "affected", "version": "20.2", "versionType": "custom"}]}], "configurations": [{"lang": "en", "value": "The example of the configuration stanza affected by this issue is as follows:\n [services ids]"}], "datePublic": "2021-01-13T00:00:00", "descriptions": [{"lang": "en", "value": "When the \"Intrusion Detection Service\" (IDS) feature is configured on Juniper Networks MX series with a dynamic firewall filter using IPv6 source or destination prefix, it may incorrectly match the prefix as /32, causing the filter to block unexpected traffic. 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"cpe:2.3:h:juniper:mx240:-:*:*:*:*:*:*:*", "matchCriteriaId": "F4A26704-A6A4-4C4F-9E12-A0A0259491EF", "vulnerable": false}, {"criteria": "cpe:2.3:h:juniper:mx40:-:*:*:*:*:*:*:*", "matchCriteriaId": "C982A2FF-A1F9-4830-BAB6-77CFCE1F093F", "vulnerable": false}, {"criteria": "cpe:2.3:h:juniper:mx480:-:*:*:*:*:*:*:*", "matchCriteriaId": "104858BD-D31D-40E0-8524-2EC311F10EAC", "vulnerable": false}, {"criteria": "cpe:2.3:h:juniper:mx5:-:*:*:*:*:*:*:*", "matchCriteriaId": "3B557965-0040-4048-B56C-F564FF28635B", "vulnerable": false}, {"criteria": "cpe:2.3:h:juniper:mx80:-:*:*:*:*:*:*:*", "matchCriteriaId": "EB875EBD-A3CD-4466-B2A3-39D47FF94592", "vulnerable": false}, {"criteria": "cpe:2.3:h:juniper:mx960:-:*:*:*:*:*:*:*", "matchCriteriaId": "B5E08E1E-0FE4-4294-9497-BBFFECA2A220", "vulnerable": false}], "negate": false, "operator": "OR"}], "operator": "AND"}], "descriptions": [{"lang": "en", "value": "When the \"Intrusion Detection Service\" (IDS) feature is configured on Juniper Networks MX series with a dynamic firewall filter using IPv6 source or destination prefix, it may incorrectly match the prefix as /32, causing the filter to block unexpected traffic. This issue affects only IPv6 prefixes when used as source and destination. This issue affects MX Series devices using MS-MPC, MS-MIC or MS-SPC3 service cards with IDS service configured. This issue affects: Juniper Networks Junos OS 17.3 versions prior to 17.3R3-S10 on MX Series; 17.4 versions prior to 17.4R3-S3 on MX Series; 18.1 versions prior to 18.1R3-S11 on MX Series; 18.2 versions prior to 18.2R3-S6 on MX Series; 18.3 versions prior to 18.3R3-S4 on MX Series; 18.4 versions prior to 18.4R3-S6 on MX Series; 19.1 versions prior to 19.1R2-S2, 19.1R3-S3 on MX Series; 19.2 versions prior to 19.2R3-S1 on MX Series; 19.3 versions prior to 19.3R2-S5, 19.3R3-S1 on MX Series; 19.4 versions prior to 19.4R3 on MX Series; 20.1 versions prior to 20.1R2 on MX Series; 20.2 versions prior to 20.2R2 on MX Series;"}, {"lang": "es", "value": "Cuando la funcionalidad \"Intrusion Detection Service\" (IDS) est\u00e1 configurada en la serie Juniper Networks MX con un filtro de firewall din\u00e1mico usando el prefijo de origen o destino de IPv6, puede coincidir incorrectamente con el prefijo como /32, causando que el filtro bloquee el tr\u00e1fico inesperado.&#xa0;Este problema afecta solo a los prefijos de IPv6 cuando se utilizan como origen y destino.&#xa0;Este problema afecta a los dispositivos de la Serie MX que utilizan tarjetas de servicio MS-MPC, MS-MIC o MS-SPC3 con el servicio IDS configurado.&#xa0;Este problema afecta a: Juniper Networks Junos OS versiones 17.3 anteriores a 17.3R3-S10 en la Serie MX;&#xa0;versiones 17.4 anteriores a 17.4R3-S3 en la Serie MX;&#xa0;versiones 18.1 anteriores a 18.1R3-S11 en la Serie MX;&#xa0;versiones 18.2 anteriores a 18.2R3-S6 en la Serie MX;&#xa0;versiones 18.3 anteriores a 18.3R3-S4 en la Serie MX;&#xa0;versiones 18.4 anteriores a 18.4R3-S6 en la Serie MX;&#xa0;versiones 19.1 anteriores a 19.1R2-S2, 19.1R3-S3 en la Serie MX;&#xa0;versiones 19.2 anteriores a 19.2R3-S1 en la Serie MX;&#xa0;versiones 19.3 anteriores a 19.3R2-S5, 19.3R3-S1 en la Serie MX;&#xa0;versiones 19.4 anteriores a 19.4R3 en la Serie MX;&#xa0;20.1 versiones anteriores a 20.1R2 en la Serie MX;&#xa0;20.2 versiones anteriores a 20.2R2 en la Serie MX"}], "id": "CVE-2021-0205", "lastModified": "2024-11-21T05:42:11.930", "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": "[email protected]", "type": "Primary", "userInteractionRequired": false}], "cvssMetricV31": [{"cvssData": {"attackComplexity": "LOW", "attackVector": "NETWORK", "availabilityImpact": "LOW", "baseScore": 5.8, "baseSeverity": "MEDIUM", "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:L", "version": "3.1"}, "exploitabilityScore": 3.9, "impactScore": 1.4, "source": "[email protected]", "type": "Secondary"}]}, "published": "2021-01-15T18:15:14.697", "references": [{"source": "[email protected]", "tags": ["Vendor Advisory"], "url": "https://kb.juniper.net/JSA11095"}, {"source": "af854a3a-2127-422b-91ae-364da2661108", "tags": ["Vendor Advisory"], "url": "https://kb.juniper.net/JSA11095"}], "sourceIdentifier": "[email protected]", "vulnStatus": "Modified", "weaknesses": [{"description": [{"lang": "en", "value": "CWE-284"}], "source": "[email protected]", "type": "Secondary"}, {"description": [{"lang": "en", "value": "NVD-CWE-Other"}], "source": "[email protected]", "type": "Primary"}]}

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