CVE-2021-0226

{"containers": {"cna": {"affected": [{"product": "Junos OS Evolved", "vendor": "Juniper Networks", "versions": [{"lessThan": "19.4R2-S3-EVO", "status": "affected", "version": "19.4-EVO", "versionType": "custom"}, {"lessThan": "20.1R2-S3-EVO", "status": "affected", "version": "20.1-EVO", "versionType": "custom"}, {"lessThan": "20.2R2-S1-EVO", "status": "affected", "version": "20.2-EVO", "versionType": "custom"}, {"lessThan": "20.3R2-EVO", "status": "affected", "version": "20.3-EVO", "versionType": "custom"}]}], "datePublic": "2021-04-14T00:00:00.000Z", "descriptions": [{"lang": "en", "value": "On Juniper Networks Junos OS Evolved devices, receipt of a specific IPv6 packet may cause an established IPv6 BGP session to terminate, creating a Denial of Service (DoS) condition. Continued receipt and processing of this packet will create a sustained Denial of Service (DoS) condition. This issue does not affect IPv4 BGP sessions. This issue affects IBGP or EBGP peer sessions with IPv6. This issue affects: Juniper Networks Junos OS Evolved: 19.4 versions prior to 19.4R2-S3-EVO; 20.1 versions prior to 20.1R2-S3-EVO; 20.2 versions prior to 20.2R2-S1-EVO; 20.3 versions prior to 20.3R2-EVO. This issue does not affect Juniper Networks Junos OS releases."}], "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": 7.1, "baseSeverity": "HIGH", "confidentialityImpact": "NONE", "integrityImpact": "LOW", "privilegesRequired": "NONE", "scope": "UNCHANGED", "userInteraction": "NONE", "vectorString": "CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:H", "version": "3.1"}}], "problemTypes": [{"descriptions": [{"description": "Denial of Service (DoS)", "lang": "en", "type": "text"}]}, {"descriptions": [{"cweId": "CWE-665", "description": "CWE-665: Improper Initialization", "lang": "en", "type": "CWE"}]}], "providerMetadata": {"dateUpdated": "2021-04-22T19:36:56.000Z", "orgId": "8cbe9d5a-a066-4c94-8978-4b15efeae968", "shortName": "juniper"}, "references": [{"tags": ["x_refsource_MISC"], "url": "https://kb.juniper.net/JSA11121"}], "solutions": [{"lang": "en", "value": "The following software releases have been updated to resolve this specific issue: Junos OS Evolved: 19.4R2-S3-EVO, 20.1R2-S3-EVO, 20.2R2-S1-EVO, 20.3R2-EVO, 20.4R1-EVO, and all subsequent releases."}], "source": {"advisory": "JSA11121", "defect": ["1544978"], "discovery": "USER"}, "title": "Junos OS Evolved: The IPv6 BGP session will flap due to receipt of a specific IPv6 packet", "workarounds": [{"lang": "en", "value": "There are no viable workarounds for this issue."}], "x_generator": {"engine": "Vulnogram 0.0.9"}, "x_legacyV4Record": {"CVE_data_meta": {"ASSIGNER": "sirt@juniper.net", "DATE_PUBLIC": "2021-04-14T16:00:00.000Z", "ID": "CVE-2021-0226", "STATE": "PUBLIC", "TITLE": "Junos OS Evolved: The IPv6 BGP session will flap due to receipt of a specific IPv6 packet"}, "affects": {"vendor": {"vendor_data": [{"product": {"product_data": [{"product_name": "Junos OS Evolved", "version": {"version_data": [{"version_affected": "<", "version_name": "19.4-EVO", "version_value": "19.4R2-S3-EVO"}, {"version_affected": "<", "version_name": "20.1-EVO", "version_value": "20.1R2-S3-EVO"}, {"version_affected": "<", "version_name": "20.2-EVO", "version_value": "20.2R2-S1-EVO"}, {"version_affected": "<", "version_name": "20.3-EVO", "version_value": "20.3R2-EVO"}]}}]}, "vendor_name": "Juniper Networks"}]}}, "data_format": "MITRE", "data_type": "CVE", "data_version": "4.0", "description": {"description_data": [{"lang": "eng", "value": "On Juniper Networks Junos OS Evolved devices, receipt of a specific IPv6 packet may cause an established IPv6 BGP session to terminate, creating a Denial of Service (DoS) condition. Continued receipt and processing of this packet will create a sustained Denial of Service (DoS) condition. This issue does not affect IPv4 BGP sessions. This issue affects IBGP or EBGP peer sessions with IPv6. This issue affects: Juniper Networks Junos OS Evolved: 19.4 versions prior to 19.4R2-S3-EVO; 20.1 versions prior to 20.1R2-S3-EVO; 20.2 versions prior to 20.2R2-S1-EVO; 20.3 versions prior to 20.3R2-EVO. This issue does not affect Juniper Networks Junos OS releases."}]}, "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": 7.1, "baseSeverity": "HIGH", "confidentialityImpact": "NONE", "integrityImpact": "LOW", "privilegesRequired": "NONE", "scope": "UNCHANGED", "userInteraction": "NONE", "vectorString": "CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:H", "version": "3.1"}}, "problemtype": {"problemtype_data": [{"description": [{"lang": "eng", "value": "Denial of Service (DoS)"}]}, {"description": [{"lang": "eng", "value": "CWE-665: Improper Initialization"}]}]}, "references": {"reference_data": [{"name": "https://kb.juniper.net/JSA11121", "refsource": "MISC", "url": "https://kb.juniper.net/JSA11121"}]}, "solution": [{"lang": "en", "value": "The following software releases have been updated to resolve this specific issue: Junos OS Evolved: 19.4R2-S3-EVO, 20.1R2-S3-EVO, 20.2R2-S1-EVO, 20.3R2-EVO, 20.4R1-EVO, and all subsequent releases."}], "source": {"advisory": "JSA11121", "defect": ["1544978"], "discovery": "USER"}, "work_around": [{"lang": "en", "value": "There are no viable workarounds for this issue."}]}}, "adp": [{"providerMetadata": {"orgId": "af854a3a-2127-422b-91ae-364da2661108", "shortName": "CVE", "dateUpdated": "2024-08-03T15:32:10.081Z"}, "title": "CVE Program Container", "references": [{"tags": ["x_refsource_MISC", "x_transferred"], "url": "https://kb.juniper.net/JSA11121"}]}]}, "cveMetadata": {"assignerOrgId": "8cbe9d5a-a066-4c94-8978-4b15efeae968", "assignerShortName": "juniper", "cveId": "CVE-2021-0226", "datePublished": "2021-04-22T19:36:56.622Z", "dateReserved": "2020-10-27T00:00:00.000Z", "dateUpdated": "2024-09-17T00:11:39.685Z", "state": "PUBLISHED"}, "dataType": "CVE_RECORD", "dataVersion": "5.1"}

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{"affected": [{"affectedData": [{"product": "Junos OS Evolved", "vendor": "Juniper Networks", "versions": [{"lessThan": "19.4R2-S3-EVO", "status": "affected", "version": "19.4-EVO", "versionType": "custom"}, {"lessThan": "20.1R2-S3-EVO", "status": "affected", "version": "20.1-EVO", "versionType": "custom"}, {"lessThan": "20.2R2-S1-EVO", "status": "affected", "version": "20.2-EVO", "versionType": "custom"}, {"lessThan": "20.3R2-EVO", "status": "affected", "version": "20.3-EVO", "versionType": "custom"}]}], "source": "sirt@juniper.net"}], "configurations": [{"nodes": [{"cpeMatch": [{"criteria": "cpe:2.3:o:juniper:junos_os_evolved:20.1:r1:*:*:*:*:*:*", "matchCriteriaId": "F64FBB4B-7CBF-499B-A523-804857DEFAFA", "vulnerable": true}, {"criteria": "cpe:2.3:o:juniper:junos_os_evolved:20.1:r1-s1:*:*:*:*:*:*", "matchCriteriaId": "EEBE159F-5D94-4C18-B922-331586BEA2CA", "vulnerable": true}, {"criteria": "cpe:2.3:o:juniper:junos_os_evolved:20.1:r2:*:*:*:*:*:*", "matchCriteriaId": "A38EBFC9-ECBD-4362-82B2-04C02009E85C", "vulnerable": true}, {"criteria": "cpe:2.3:o:juniper:junos_os_evolved:20.1:r2-s1:*:*:*:*:*:*", "matchCriteriaId": "0DF7C3A8-1279-4F38-9548-85AC7D6290FD", "vulnerable": true}, {"criteria": "cpe:2.3:o:juniper:junos_os_evolved:20.1:r2-s2:*:*:*:*:*:*", "matchCriteriaId": "50D38F97-81B0-4952-A1E3-0A9AA4D34820", "vulnerable": true}, {"criteria": "cpe:2.3:o:juniper:junos_os_evolved:20.2:r1:*:*:*:*:*:*", "matchCriteriaId": "FCA8D4D2-D49D-4F91-95E2-2A0E8599338A", "vulnerable": true}, {"criteria": "cpe:2.3:o:juniper:junos_os_evolved:20.2:r1-s1:*:*:*:*:*:*", "matchCriteriaId": "FF37C911-1904-475A-86F7-F92F34A1A88F", "vulnerable": true}, {"criteria": "cpe:2.3:o:juniper:junos_os_evolved:20.2:r2:*:*:*:*:*:*", "matchCriteriaId": "DDFFE53D-202D-4396-A470-0A09F3320375", "vulnerable": true}, {"criteria": "cpe:2.3:o:juniper:junos_os_evolved:20.3:r1:*:*:*:*:*:*", "matchCriteriaId": "4AFB91E3-CAAC-429F-A869-DDD40FB0F84D", "vulnerable": true}, {"criteria": "cpe:2.3:o:juniper:junos_os_evolved:20.3:r1-s1:*:*:*:*:*:*", "matchCriteriaId": "0A9CA997-2DDA-4808-B2AE-8804FEB798B2", "vulnerable": true}], "negate": false, "operator": "OR"}]}], "cveTags": [], "descriptions": [{"lang": "en", "value": "On Juniper Networks Junos OS Evolved devices, receipt of a specific IPv6 packet may cause an established IPv6 BGP session to terminate, creating a Denial of Service (DoS) condition. Continued receipt and processing of this packet will create a sustained Denial of Service (DoS) condition. This issue does not affect IPv4 BGP sessions. This issue affects IBGP or EBGP peer sessions with IPv6. This issue affects: Juniper Networks Junos OS Evolved: 19.4 versions prior to 19.4R2-S3-EVO; 20.1 versions prior to 20.1R2-S3-EVO; 20.2 versions prior to 20.2R2-S1-EVO; 20.3 versions prior to 20.3R2-EVO. This issue does not affect Juniper Networks Junos OS releases."}, {"lang": "es", "value": "En los dispositivos Junos OS Evolved de Juniper Networks, la recepci\u00f3n de un paquete IPv6 espec\u00edfico puede causar la finalizaci\u00f3n de una sesi\u00f3n BGP IPv6 establecida, creando una condici\u00f3n de Denegaci\u00f3n de Servicio (DoS).&#xa0;La recepci\u00f3n y el procesamiento continuo de este paquete crear\u00e1 una condici\u00f3n sostenida de Denegaci\u00f3n de Servicio (DoS).&#xa0;Este problema no afecta a las sesiones de IPv4 BGP.&#xa0;Este problema afecta a las sesiones de peer IBGP o EBGP con IPv6.&#xa0;Este problema afecta a: Juniper Networks Junos OS Evolved: versiones 19.4 anteriores a 19.4R2-S3-EVO;&#xa0;versiones 20.1 anteriores a 20.1R2-S3-EVO;&#xa0;versiones 20.2 anteriores a 20.2R2-S1-EVO;&#xa0;versiones 20.3 anteriores a 20.3R2-EVO.&#xa0;Este problema no afecta versiones Juniper Networks Junos OS"}], "id": "CVE-2021-0226", "lastModified": "2026-06-17T03:29:32.327", "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": "LOW", "attackVector": "ADJACENT_NETWORK", "availabilityImpact": "HIGH", "baseScore": 7.1, "baseSeverity": "HIGH", "confidentialityImpact": "NONE", "integrityImpact": "LOW", "privilegesRequired": "NONE", "scope": "UNCHANGED", "userInteraction": "NONE", "vectorString": "CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:H", "version": "3.1"}, "exploitabilityScore": 2.8, "impactScore": 4.2, "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": "2021-04-22T20:15:08.497", "references": [{"source": "sirt@juniper.net", "tags": ["Vendor Advisory"], "url": "https://kb.juniper.net/JSA11121"}, {"source": "af854a3a-2127-422b-91ae-364da2661108", "tags": ["Vendor Advisory"], "url": "https://kb.juniper.net/JSA11121"}], "sourceIdentifier": "sirt@juniper.net", "vulnStatus": "Modified", "weaknesses": [{"description": [{"lang": "en", "value": "CWE-665"}], "source": "sirt@juniper.net", "type": "Secondary"}, {"description": [{"lang": "en", "value": "CWE-665"}], "source": "nvd@nist.gov", "type": "Primary"}]}

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