CVE-2020-1632

{"containers": {"cna": {"affected": [{"product": "Junos OS", "vendor": "Juniper Networks", "versions": [{"lessThan": "16.1R7-S6", "status": "affected", "version": "16.1", "versionType": "custom"}, {"lessThan": "16.2R2-S11", "status": "affected", "version": "16.2", "versionType": "custom"}, {"lessThan": "17.1R2-S11, 17.1R3-S2", "status": "affected", "version": "17.1", "versionType": "custom"}, {"lessThan": "17.2R1-S9, 17.2R2-S8, 17.2R3-S3", "status": "affected", "version": "17.2", "versionType": "custom"}, {"lessThan": "17.2X75-D105, 17.2X75-D110, 17.2X75-D44", "status": "affected", "version": "17.2X75", "versionType": "custom"}, {"lessThan": "17.3R2-S5, 17.3R3-S7", "status": "affected", "version": "17.3", "versionType": "custom"}, {"lessThan": "17.4R2-S8, 17.4R3", "status": "affected", "version": "17.4", "versionType": "custom"}, {"lessThan": "18.1R3-S8", "status": "affected", "version": "18.1", "versionType": "custom"}, {"lessThan": "18.2R2-S6, 18.2R3-S2", "status": "affected", "version": "18.2", "versionType": "custom"}, {"lessThan": "18.2X75-D12, 18.2X75-D33, 18.2X75-D411, 18.2X75-D420, 18.2X75-D51, 18.2X75-D60", "status": "affected", "version": "18.2X75", "versionType": "custom"}, {"lessThan": "18.3R1-S6, 18.3R2-S3, 18.3R3", "status": "affected", "version": "18.3", "versionType": "custom"}, {"changes": [{"at": "18.4R2", "status": "affected"}], "lessThan": "18.4R1-S5, 18.4R3", "status": "affected", "version": "18.4", "versionType": "custom"}, {"lessThan": "19.1R1-S3, 19.1R2", "status": "affected", "version": "19.1", "versionType": "custom"}, {"lessThan": "19.2R1-S2, 19.2R2", "status": "affected", "version": "19.2", "versionType": "custom"}]}, {"product": "Junos OS Evolved", "vendor": "Juniper Networks", "versions": [{"lessThan": "19.2R2-EVO", "status": "affected", "version": "unspecified", "versionType": "custom"}]}], "configurations": [{"lang": "en", "value": "The following command can be used to check if the peer device does not support 4-Byte AS extension:\n user@device> show bgp neighbor\n ...\n Peer does not support 4 byte AS extension\n ..."}], "datePublic": "2020-04-08T00:00:00.000Z", "descriptions": [{"lang": "en", "value": "In a certain condition, receipt of a specific BGP UPDATE message might cause Juniper Networks Junos OS and Junos OS Evolved devices to advertise an invalid BGP UPDATE message to other peers, causing the other peers to terminate the established BGP session, creating a Denial of Service (DoS) condition. For example, Router A sends a specific BGP UPDATE to Router B, causing Router B to send an invalid BGP UPDATE message to Router C, resulting in termination of the BGP session between Router B and Router C. This issue might occur when there is at least a single BGP session established on the device that does not support 4 Byte AS extension (RFC 4893). Repeated receipt of the same BGP UPDATE can result in an extended DoS condition. This issue affects Juniper Networks Junos OS: 16.1 versions prior to 16.1R7-S6; 16.2 versions prior to 16.2R2-S11; 17.1 versions prior to 17.1R2-S11, 17.1R3-S2; 17.2 versions prior to 17.2R1-S9, 17.2R2-S8, 17.2R3-S3; 17.2X75 versions prior to 17.2X75-D105, 17.2X75-D110, 17.2X75-D44; 17.3 versions prior to 17.3R2-S5, 17.3R3-S7; 17.4 versions prior to 17.4R2-S8, 17.4R3; 18.1 versions prior to 18.1R3-S8; 18.2 versions prior to 18.2R2-S6, 18.2R3-S2; 18.2X75 versions prior to 18.2X75-D12, 18.2X75-D33, 18.2X75-D411, 18.2X75-D420, 18.2X75-D51, 18.2X75-D60; 18.3 versions prior to 18.3R1-S6, 18.3R2-S3, 18.3R3; 18.4 versions prior to 18.4R1-S5, 18.4R3; 18.4 version 18.4R2 and later versions; 19.1 versions prior to 19.1R1-S3, 19.1R2; 19.2 versions prior to 19.2R1-S2, 19.2R2. This issue does not affect Juniper Networks Junos OS prior to 16.1R1. This issue affects Juniper Networks Junos OS Evolved prior to 19.2R2-EVO."}], "exploits": [{"lang": "en", "value": "Juniper SIRT is not aware of any malicious exploitation of this vulnerability."}], "metrics": [{"cvssV3_1": {"attackComplexity": "LOW", "attackVector": "NETWORK", "availabilityImpact": "HIGH", "baseScore": 8.6, "baseSeverity": "HIGH", "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:H", "version": "3.1"}}], "problemTypes": [{"descriptions": [{"description": "Denial of Service (DoS)", "lang": "en", "type": "text"}]}, {"descriptions": [{"cweId": "CWE-755", "description": "CWE-755 Improper Handling of Exceptional Conditions", "lang": "en", "type": "CWE"}]}], "providerMetadata": {"dateUpdated": "2020-04-15T20:20:20.000Z", "orgId": "8cbe9d5a-a066-4c94-8978-4b15efeae968", "shortName": "juniper"}, "references": [{"tags": ["x_refsource_CONFIRM"], "url": "https://kb.juniper.net/JSA11013"}], "solutions": [{"lang": "en", "value": "Junos OS: 16.1R7-S6, 16.2R2-S11, 17.1R2-S11, 17.1R3-S2, 17.2R1-S9, 17.2R2-S8, 17.2R3-S3, 17.2X75-D105, 17.2X75-D110, 17.2X75-D44, 17.3R2-S5, 17.3R3-S7, 17.4R2-S8, 17.4R3, 18.1R3-S8, 18.2R2-S6, 18.2R3-S2, 18.2X75-D12, 18.2X75-D33, 18.2X75-D411, 18.2X75-D420, 18.2X75-D51, 18.2X75-D60, 18.3R1-S6, 18.3R2-S3, 18.3R3, 18.4R1-S5, 18.4R3, 19.1R1-S3, 19.1R2, 19.2R1-S2, 19.2R2, 19.3R1, and all subsequent releases.\n\nJunos OS Evolved: 19.2R2-EVO, 19.3R1-EVO and all subsequent releases."}], "source": {"advisory": "JSA11013", "defect": ["1454677"], "discovery": "USER"}, "title": "Junos OS and Junos OS Evolved: Invalid BGP UPDATE sent to peer device may cause BGP session to terminate.", "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": "2020-04-08T16:00:00.000Z", "ID": "CVE-2020-1632", "STATE": "PUBLIC", "TITLE": "Junos OS and Junos OS Evolved: Invalid BGP UPDATE sent to peer device may cause BGP session to terminate."}, "affects": {"vendor": {"vendor_data": [{"product": {"product_data": [{"product_name": "Junos OS", "version": {"version_data": [{"version_affected": "<", "version_name": "16.1", "version_value": "16.1R7-S6"}, {"version_affected": "<", "version_name": "16.2", "version_value": "16.2R2-S11"}, {"version_affected": "<", "version_name": "17.1", "version_value": "17.1R2-S11, 17.1R3-S2"}, {"version_affected": "<", "version_name": "17.2", "version_value": "17.2R1-S9, 17.2R2-S8, 17.2R3-S3"}, {"version_affected": "<", "version_name": "17.2X75", "version_value": "17.2X75-D105, 17.2X75-D110, 17.2X75-D44"}, {"version_affected": "<", "version_name": "17.3", "version_value": "17.3R2-S5, 17.3R3-S7"}, {"version_affected": "<", "version_name": "17.4", "version_value": "17.4R2-S8, 17.4R3"}, {"version_affected": "<", "version_name": "18.1", "version_value": "18.1R3-S8"}, {"version_affected": "<", "version_name": "18.2", "version_value": "18.2R2-S6, 18.2R3-S2"}, {"version_affected": "<", "version_name": "18.2X75", "version_value": "18.2X75-D12, 18.2X75-D33, 18.2X75-D411, 18.2X75-D420, 18.2X75-D51, 18.2X75-D60"}, {"version_affected": "<", "version_name": "18.3", "version_value": "18.3R1-S6, 18.3R2-S3, 18.3R3"}, {"version_affected": "<", "version_name": "18.4", "version_value": "18.4R1-S5, 18.4R3"}, {"version_affected": ">=", "version_name": "18.4", "version_value": "18.4R2"}, {"version_affected": "<", "version_name": "19.1", "version_value": "19.1R1-S3, 19.1R2"}, {"version_affected": "<", "version_name": "19.2", "version_value": "19.2R1-S2, 19.2R2"}]}}, {"product_name": "Junos OS Evolved", "version": {"version_data": [{"version_affected": "<", "version_value": "19.2R2-EVO"}]}}]}, "vendor_name": "Juniper Networks"}]}}, "configuration": [{"lang": "en", "value": "The following command can be used to check if the peer device does not support 4-Byte AS extension:\n user@device> show bgp neighbor\n ...\n Peer does not support 4 byte AS extension\n ..."}], "data_format": "MITRE", "data_type": "CVE", "data_version": "4.0", "description": {"description_data": [{"lang": "eng", "value": "In a certain condition, receipt of a specific BGP UPDATE message might cause Juniper Networks Junos OS and Junos OS Evolved devices to advertise an invalid BGP UPDATE message to other peers, causing the other peers to terminate the established BGP session, creating a Denial of Service (DoS) condition. For example, Router A sends a specific BGP UPDATE to Router B, causing Router B to send an invalid BGP UPDATE message to Router C, resulting in termination of the BGP session between Router B and Router C. This issue might occur when there is at least a single BGP session established on the device that does not support 4 Byte AS extension (RFC 4893). Repeated receipt of the same BGP UPDATE can result in an extended DoS condition. This issue affects Juniper Networks Junos OS: 16.1 versions prior to 16.1R7-S6; 16.2 versions prior to 16.2R2-S11; 17.1 versions prior to 17.1R2-S11, 17.1R3-S2; 17.2 versions prior to 17.2R1-S9, 17.2R2-S8, 17.2R3-S3; 17.2X75 versions prior to 17.2X75-D105, 17.2X75-D110, 17.2X75-D44; 17.3 versions prior to 17.3R2-S5, 17.3R3-S7; 17.4 versions prior to 17.4R2-S8, 17.4R3; 18.1 versions prior to 18.1R3-S8; 18.2 versions prior to 18.2R2-S6, 18.2R3-S2; 18.2X75 versions prior to 18.2X75-D12, 18.2X75-D33, 18.2X75-D411, 18.2X75-D420, 18.2X75-D51, 18.2X75-D60; 18.3 versions prior to 18.3R1-S6, 18.3R2-S3, 18.3R3; 18.4 versions prior to 18.4R1-S5, 18.4R3; 18.4 version 18.4R2 and later versions; 19.1 versions prior to 19.1R1-S3, 19.1R2; 19.2 versions prior to 19.2R1-S2, 19.2R2. This issue does not affect Juniper Networks Junos OS prior to 16.1R1. This issue affects Juniper Networks Junos OS Evolved prior to 19.2R2-EVO."}]}, "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": "NETWORK", "availabilityImpact": "HIGH", "baseScore": 8.6, "baseSeverity": "HIGH", "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:H", "version": "3.1"}}, "problemtype": {"problemtype_data": [{"description": [{"lang": "eng", "value": "Denial of Service (DoS)"}]}, {"description": [{"lang": "eng", "value": "CWE-755 Improper Handling of Exceptional Conditions"}]}]}, "references": {"reference_data": [{"name": "https://kb.juniper.net/JSA11013", "refsource": "CONFIRM", "url": "https://kb.juniper.net/JSA11013"}]}, "solution": [{"lang": "en", "value": "Junos OS: 16.1R7-S6, 16.2R2-S11, 17.1R2-S11, 17.1R3-S2, 17.2R1-S9, 17.2R2-S8, 17.2R3-S3, 17.2X75-D105, 17.2X75-D110, 17.2X75-D44, 17.3R2-S5, 17.3R3-S7, 17.4R2-S8, 17.4R3, 18.1R3-S8, 18.2R2-S6, 18.2R3-S2, 18.2X75-D12, 18.2X75-D33, 18.2X75-D411, 18.2X75-D420, 18.2X75-D51, 18.2X75-D60, 18.3R1-S6, 18.3R2-S3, 18.3R3, 18.4R1-S5, 18.4R3, 19.1R1-S3, 19.1R2, 19.2R1-S2, 19.2R2, 19.3R1, and all subsequent releases.\n\nJunos OS Evolved: 19.2R2-EVO, 19.3R1-EVO and all subsequent releases."}], "source": {"advisory": "JSA11013", "defect": ["1454677"], "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": "2024-08-04T06:46:29.959Z"}, "title": "CVE Program Container", "references": [{"tags": ["x_refsource_CONFIRM", "x_transferred"], "url": "https://kb.juniper.net/JSA11013"}]}]}, "cveMetadata": {"assignerOrgId": "8cbe9d5a-a066-4c94-8978-4b15efeae968", "assignerShortName": "juniper", "cveId": "CVE-2020-1632", "datePublished": "2020-04-15T20:20:20.697Z", "dateReserved": "2019-11-04T00:00:00.000Z", "dateUpdated": "2024-09-17T00:40:58.979Z", "state": "PUBLISHED"}, "dataType": "CVE_RECORD", "dataVersion": "5.1"}

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"matchCriteriaId": "9A5B337A-727C-4767-AD7B-E0F7F99EB46F", "vulnerable": true}, {"criteria": "cpe:2.3:o:juniper:junos_os_evolved:19.2:r1:*:*:*:*:*:*", "matchCriteriaId": "914D6984-1820-483B-AEB9-2C5257B5E900", "vulnerable": true}], "negate": false, "operator": "OR"}]}], "cveTags": [], "descriptions": [{"lang": "en", "value": "In a certain condition, receipt of a specific BGP UPDATE message might cause Juniper Networks Junos OS and Junos OS Evolved devices to advertise an invalid BGP UPDATE message to other peers, causing the other peers to terminate the established BGP session, creating a Denial of Service (DoS) condition. For example, Router A sends a specific BGP UPDATE to Router B, causing Router B to send an invalid BGP UPDATE message to Router C, resulting in termination of the BGP session between Router B and Router C. This issue might occur when there is at least a single BGP session established on the device that does not support 4 Byte AS extension (RFC 4893). Repeated receipt of the same BGP UPDATE can result in an extended DoS condition. This issue affects Juniper Networks Junos OS: 16.1 versions prior to 16.1R7-S6; 16.2 versions prior to 16.2R2-S11; 17.1 versions prior to 17.1R2-S11, 17.1R3-S2; 17.2 versions prior to 17.2R1-S9, 17.2R2-S8, 17.2R3-S3; 17.2X75 versions prior to 17.2X75-D105, 17.2X75-D110, 17.2X75-D44; 17.3 versions prior to 17.3R2-S5, 17.3R3-S7; 17.4 versions prior to 17.4R2-S8, 17.4R3; 18.1 versions prior to 18.1R3-S8; 18.2 versions prior to 18.2R2-S6, 18.2R3-S2; 18.2X75 versions prior to 18.2X75-D12, 18.2X75-D33, 18.2X75-D411, 18.2X75-D420, 18.2X75-D51, 18.2X75-D60; 18.3 versions prior to 18.3R1-S6, 18.3R2-S3, 18.3R3; 18.4 versions prior to 18.4R1-S5, 18.4R3; 18.4 version 18.4R2 and later versions; 19.1 versions prior to 19.1R1-S3, 19.1R2; 19.2 versions prior to 19.2R1-S2, 19.2R2. This issue does not affect Juniper Networks Junos OS prior to 16.1R1. This issue affects Juniper Networks Junos OS Evolved prior to 19.2R2-EVO."}, {"lang": "es", "value": "En determinadas condiciones, la recepci\u00f3n de un mensaje espec\u00edfico de UPDATE de BGP puede causar que los dispositivos Juniper Networks Junos OS y Junos OS Evolved anuncien un mensaje de UPDATE de BGP no v\u00e1lido a otros peers, causando que los otros peers finalicen la sesi\u00f3n de BGP establecida, creando una condici\u00f3n de Denegaci\u00f3n de Servicio (DoS). Por ejemplo, el Enrutador A env\u00eda una UPDATE de BGP espec\u00edfica al Enrutador B, causando que el Enrutador B env\u00ede un mensaje de UPDATE de BGP no v\u00e1lido al Enrutador C, resultando en la terminaci\u00f3n de la sesi\u00f3n BGP entre el Enrutador B y el Enrutador C. Este problema puede ocurrir cuando existe al menos una \u00fanica sesi\u00f3n BGP establecida en el dispositivo que no admite la extensi\u00f3n AS de 4 bytes (RFC 4893). La recepci\u00f3n repetida de la misma UPDATE de BGP puede resultar en una condici\u00f3n DoS extendida. Este problema afecta a Juniper Networks Junos OS: versiones 16.1 anteriores a 16.1R7-S6; versiones 16.2 anteriores a 16.2R2-S11; versiones 17.1 anteriores a 17.1R2-S11, 17.1R3-S2; versiones 17.2 anteriores a 17.2R1-S9, 17.2R2-S8, 17.2R3-S3; versiones 17.2X75 anteriores a 17.2X75-D105, 17.2X75-D110, 17.2X75-D44; versiones 17.3 anteriores a 17.3R2-S5, 17.3R3-S7; versiones 17.4 anteriores a 17.4R2-S8, 17.4R3; versiones 18.1 anteriores a 18.1R3-S8; versiones 18.2 anteriores a 18.2R2-S6, 18.2R3-S2; versiones 18.2X75 anteriores a 18.2X75-D12, 18.2X75-D33, 18.2X75-D411, 18.2X75-D420, 18.2X75-D51, 18.2X75-D60; versiones 18.3 anteriores a 18.3R1-S6, 18.3R2-S3, 18.3R3; versiones 18.4 anteriores a 18.4R1-S5, 18.4R3; 18.4 versi\u00f3n 18.4R2 y versiones posteriores; versiones 19.1 anteriores a 19.1R1-S3, 19.1R2; versiones 19.2 anteriores a 19.2R1-S2, 19.2R2. Este problema no afecta a Juniper Networks Junos OS versiones anterior a 16.1R1. Este problema afecta a Juniper Networks Junos OS Evolved versiones anteriores a 19.2R2-EVO."}], "id": "CVE-2020-1632", "lastModified": "2026-06-17T03:02:02.590", "metrics": {"cvssMetricV2": [{"acInsufInfo": false, "baseSeverity": "HIGH", "cvssData": {"accessComplexity": "LOW", "accessVector": "NETWORK", "authentication": "NONE", "availabilityImpact": "COMPLETE", "baseScore": 7.8, "confidentialityImpact": "NONE", "integrityImpact": "NONE", "vectorString": "AV:N/AC:L/Au:N/C:N/I:N/A:C", "version": "2.0"}, "exploitabilityScore": 10.0, "impactScore": 6.9, "obtainAllPrivilege": false, "obtainOtherPrivilege": false, "obtainUserPrivilege": false, "source": "nvd@nist.gov", "type": "Primary", "userInteractionRequired": false}], "cvssMetricV31": [{"cvssData": {"attackComplexity": "LOW", "attackVector": "NETWORK", "availabilityImpact": "HIGH", "baseScore": 8.6, "baseSeverity": "HIGH", "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:H", "version": "3.1"}, "exploitabilityScore": 3.9, "impactScore": 4.0, "source": "sirt@juniper.net", "type": "Secondary"}, {"cvssData": {"attackComplexity": "LOW", "attackVector": "NETWORK", "availabilityImpact": "HIGH", "baseScore": 8.6, "baseSeverity": "HIGH", "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:H", "version": "3.1"}, "exploitabilityScore": 3.9, "impactScore": 4.0, "source": "nvd@nist.gov", "type": "Primary"}]}, "published": "2020-04-15T21:15:35.043", "references": [{"source": "sirt@juniper.net", "tags": ["Vendor Advisory"], "url": "https://kb.juniper.net/JSA11013"}, {"source": "af854a3a-2127-422b-91ae-364da2661108", "tags": ["Vendor Advisory"], "url": "https://kb.juniper.net/JSA11013"}], "sourceIdentifier": "sirt@juniper.net", "vulnStatus": "Modified", "weaknesses": [{"description": [{"lang": "en", "value": "CWE-755"}], "source": "sirt@juniper.net", "type": "Secondary"}, {"description": [{"lang": "en", "value": "CWE-755"}], "source": "nvd@nist.gov", "type": "Primary"}]}

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