{"containers":{"cna":{"affected":[{"product":"Junos OS","vendor":"Juniper Networks","versions":[{"lessThan":"18.4R1","status":"unaffected","version":"unspecified","versionType":"custom"},{"lessThan":"18.4R1-S8, 18.4R2-S7, 18.4R3-S7","status":"affected","version":"18.4","versionType":"custom"},{"lessThan":"19.1R2-S2, 19.1R3-S4","status":"affected","version":"19.1","versionType":"custom"},{"lessThan":"19.2R1-S6, 19.2R3-S2","status":"affected","version":"19.2","versionType":"custom"},{"lessThan":"19.3R3-S2","status":"affected","version":"19.3","versionType":"custom"},{"lessThan":"19.4R2-S4, 19.4R3-S1","status":"affected","version":"19.4","versionType":"custom"},{"lessThan":"20.1R2, 20.1R3, 20.1R3-EVO","status":"affected","version":"20.1","versionType":"custom"},{"lessThan":"20.2R2, 20.2R3, 20.2R3-EVO","status":"affected","version":"20.2","versionType":"custom"},{"lessThan":"20.3R1-S1, 20.3R2, 20.3R2-EVO","status":"affected","version":"20.3","versionType":"custom"}]},{"product":"Junos OS Evolved","vendor":"Juniper Networks","versions":[{"lessThan":"18.4R1-EVO","status":"unaffected","version":"unspecified","versionType":"custom"},{"lessThan":"20.3R2-EVO","status":"affected","version":"20.3-EVO","versionType":"custom"}]}],"configurations":[{"lang":"en","value":"The examples of the config stanza affected by this issue:\n  [ protocols bgp group <group-name> family inet6-vpn flow ]"}],"datePublic":"2021-04-14T00:00:00.000Z","descriptions":[{"lang":"en","value":"Due to an improper check for unusual or exceptional conditions in Juniper Networks Junos OS and Junos OS Evolved the Routing Protocol Daemon (RPD) service, upon receipt of a specific matching BGP packet meeting a specific term in the flowspec configuration, crashes and restarts causing a Denial of Service (DoS). Continued receipt and processing of this packet will create a sustained Denial of Service (DoS) condition. This issue affects only Multiprotocol BGP (MP-BGP) VPNv6 FlowSpec deployments. This issue affects: Juniper Networks Junos OS: 18.4 versions prior to 18.4R1-S8, 18.4R2-S7, 18.4R3-S7; 19.1 versions prior to 19.1R2-S2, 19.1R3-S4; 19.2 versions prior to 19.2R1-S6, 19.2R3-S2; 19.3 versions prior to 19.3R3-S2; 19.4 versions prior to 19.4R2-S4, 19.4R3-S1; 20.1 versions prior to 20.1R2, 20.1R3; 20.2 versions prior to 20.2R2, 20.2R3; 20.3 versions prior to 20.3R1-S1, 20.3R2. Juniper Networks Junos OS Evolved: All versions after 18.4R1-EVO prior to 20.3R2-EVO. This issue does not affect: Juniper Networks Junos OS versions prior to 18.4R1. Juniper Networks Junos OS Evolved versions prior to 18.4R1-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":6.5,"baseSeverity":"MEDIUM","confidentialityImpact":"NONE","integrityImpact":"NONE","privilegesRequired":"LOW","scope":"UNCHANGED","userInteraction":"NONE","vectorString":"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H","version":"3.1"}}],"problemTypes":[{"descriptions":[{"cweId":"CWE-754","description":"CWE-754 Improper Check for Unusual or Exceptional Conditions","lang":"en","type":"CWE"}]},{"descriptions":[{"description":"Denial of Service (DoS)","lang":"en","type":"text"}]}],"providerMetadata":{"dateUpdated":"2021-04-22T19:37:03.000Z","orgId":"8cbe9d5a-a066-4c94-8978-4b15efeae968","shortName":"juniper"},"references":[{"tags":["x_refsource_MISC"],"url":"https://kb.juniper.net/JSA11131"}],"solutions":[{"lang":"en","value":"The following software releases have been updated to resolve this specific issue:\n\nJunos OS: 18.4R1-S8, 18.4R2-S7, 18.4R3-S7, 19.1R2-S2, 19.1R3-S4, 19.2R1-S6, 19.2R3-S2, 19.3R3-S2, 19.4R2-S4, 19.4R3-S1, 20.1R2, 20.1R3, 20.2R2, 20.2R3, 20.3R1-S1, 20.3R2, 20.4R1 and all subsequent releases.\n\nJunos OS Evolved: 20.3R2-EVO, 20.4R1-EVO, and all subsequent releases."}],"source":{"advisory":"JSA11131","defect":["1537085"],"discovery":"INTERNAL"},"title":"Junos OS: A specific BGP VPNv6 flowspec message causes routing protocol daemon (rpd) process to crash with a core.","workarounds":[{"lang":"en","value":"Do not configure \"family inet6-vpn flow\" under BGP if no inet6-vpn routes are required to be received."}],"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-2021-0236","STATE":"PUBLIC","TITLE":"Junos OS: A specific BGP VPNv6 flowspec message causes routing protocol daemon (rpd) process to crash with a core."},"affects":{"vendor":{"vendor_data":[{"product":{"product_data":[{"product_name":"Junos OS","version":{"version_data":[{"version_affected":"!<","version_value":"18.4R1"},{"version_affected":"<","version_name":"18.4","version_value":"18.4R1-S8, 18.4R2-S7, 18.4R3-S7"},{"version_affected":"<","version_name":"19.1","version_value":"19.1R2-S2, 19.1R3-S4"},{"version_affected":"<","version_name":"19.2","version_value":"19.2R1-S6, 19.2R3-S2"},{"version_affected":"<","version_name":"19.3","version_value":"19.3R3-S2"},{"version_affected":"<","version_name":"19.4","version_value":"19.4R2-S4, 19.4R3-S1"},{"version_affected":"<","version_name":"20.1","version_value":"20.1R2, 20.1R3, 20.1R3-EVO"},{"version_affected":"<","version_name":"20.2","version_value":"20.2R2, 20.2R3, 20.2R3-EVO"},{"version_affected":"<","version_name":"20.3","version_value":"20.3R1-S1, 20.3R2, 20.3R2-EVO"}]}},{"product_name":"Junos OS Evolved","version":{"version_data":[{"version_affected":"!<","version_value":"18.4R1-EVO"},{"version_affected":"<","version_name":"20.3-EVO","version_value":"20.3R2-EVO"}]}}]},"vendor_name":"Juniper Networks"}]}},"configuration":[{"lang":"en","value":"The examples of the config stanza affected by this issue:\n  [ protocols bgp group <group-name> family inet6-vpn flow ]"}],"data_format":"MITRE","data_type":"CVE","data_version":"4.0","description":{"description_data":[{"lang":"eng","value":"Due to an improper check for unusual or exceptional conditions in Juniper Networks Junos OS and Junos OS Evolved the Routing Protocol Daemon (RPD) service, upon receipt of a specific matching BGP packet meeting a specific term in the flowspec configuration, crashes and restarts causing a Denial of Service (DoS). Continued receipt and processing of this packet will create a sustained Denial of Service (DoS) condition. This issue affects only Multiprotocol BGP (MP-BGP) VPNv6 FlowSpec deployments. This issue affects: Juniper Networks Junos OS: 18.4 versions prior to 18.4R1-S8, 18.4R2-S7, 18.4R3-S7; 19.1 versions prior to 19.1R2-S2, 19.1R3-S4; 19.2 versions prior to 19.2R1-S6, 19.2R3-S2; 19.3 versions prior to 19.3R3-S2; 19.4 versions prior to 19.4R2-S4, 19.4R3-S1; 20.1 versions prior to 20.1R2, 20.1R3; 20.2 versions prior to 20.2R2, 20.2R3; 20.3 versions prior to 20.3R1-S1, 20.3R2. Juniper Networks Junos OS Evolved: All versions after 18.4R1-EVO prior to 20.3R2-EVO. This issue does not affect: Juniper Networks Junos OS versions prior to 18.4R1. Juniper Networks Junos OS Evolved versions prior to 18.4R1-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":6.5,"baseSeverity":"MEDIUM","confidentialityImpact":"NONE","integrityImpact":"NONE","privilegesRequired":"LOW","scope":"UNCHANGED","userInteraction":"NONE","vectorString":"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H","version":"3.1"}},"problemtype":{"problemtype_data":[{"description":[{"lang":"eng","value":"CWE-754 Improper Check for Unusual or Exceptional Conditions"}]},{"description":[{"lang":"eng","value":"Denial of Service (DoS)"}]}]},"references":{"reference_data":[{"name":"https://kb.juniper.net/JSA11131","refsource":"MISC","url":"https://kb.juniper.net/JSA11131"}]},"solution":[{"lang":"en","value":"The following software releases have been updated to resolve this specific issue:\n\nJunos OS: 18.4R1-S8, 18.4R2-S7, 18.4R3-S7, 19.1R2-S2, 19.1R3-S4, 19.2R1-S6, 19.2R3-S2, 19.3R3-S2, 19.4R2-S4, 19.4R3-S1, 20.1R2, 20.1R3, 20.2R2, 20.2R3, 20.3R1-S1, 20.3R2, 20.4R1 and all subsequent releases.\n\nJunos OS Evolved: 20.3R2-EVO, 20.4R1-EVO, and all subsequent releases."}],"source":{"advisory":"JSA11131","defect":["1537085"],"discovery":"INTERNAL"},"work_around":[{"lang":"en","value":"Do not configure \"family inet6-vpn flow\" under BGP if no inet6-vpn routes are required to be received."}]}},"adp":[{"providerMetadata":{"orgId":"af854a3a-2127-422b-91ae-364da2661108","shortName":"CVE","dateUpdated":"2024-08-03T15:32:10.109Z"},"title":"CVE Program Container","references":[{"tags":["x_refsource_MISC","x_transferred"],"url":"https://kb.juniper.net/JSA11131"}]}]},"cveMetadata":{"assignerOrgId":"8cbe9d5a-a066-4c94-8978-4b15efeae968","assignerShortName":"juniper","cveId":"CVE-2021-0236","datePublished":"2021-04-22T19:37:03.319Z","dateReserved":"2020-10-27T00:00:00.000Z","dateUpdated":"2024-09-16T19:15:47.001Z","state":"PUBLISHED"},"dataType":"CVE_RECORD","dataVersion":"5.1"}