{"containers":{"cna":{"affected":[{"product":"Junos OS","vendor":"Juniper Networks","versions":[{"lessThan":"19.4R1","status":"unaffected","version":"unspecified","versionType":"custom"},{"changes":[{"at":"19.4R1-S4, 19.4R3-S2","status":"unaffected"}],"lessThan":"19.4*","status":"affected","version":"19.4R1","versionType":"custom"},{"lessThan":"20.1R2-S1, 20.1R3","status":"affected","version":"20.1","versionType":"custom"},{"lessThan":"20.2R2-S2, 20.2R3","status":"affected","version":"20.2","versionType":"custom"},{"lessThan":"20.3R2","status":"affected","version":"20.3","versionType":"custom"}]},{"product":"Junos OS Evolved","vendor":"Juniper Networks","versions":[{"lessThan":"19.4R1-EVO","status":"unaffected","version":"unspecified","versionType":"custom"},{"lessThan":"19.4*","status":"affected","version":"19.4R1-EVO","versionType":"custom"},{"lessThan":"20.1*","status":"affected","version":"20.1R1-EVO","versionType":"custom"},{"lessThan":"20.2*","status":"affected","version":"20.2R1-EVO","versionType":"custom"},{"lessThan":"20.3R2-EVO","status":"affected","version":"20.3","versionType":"custom"},{"lessThan":"20.4R2-EVO","status":"affected","version":"20.4","versionType":"custom"}]}],"configurations":[{"lang":"en","value":"The two config stanzas required to be affected by this issue are shown below:\n\n [ routing-options flex-algorithm <name> ]\n [ protocols isis source-packet-routing sensor-based-stats per-sid egress ]"}],"datePublic":"2021-07-14T00:00:00.000Z","descriptions":[{"lang":"en","value":"In a Segment Routing ISIS (SR-ISIS)/MPLS environment, on Juniper Networks Junos OS and Junos OS Evolved devices, configured with ISIS Flexible Algorithm for Segment Routing and sensor-based statistics, a flap of a ISIS link in the network, can lead to a routing process daemon (RPD) crash and restart, causing a Denial of Service (DoS). Continued link flaps will create a sustained Denial of Service (DoS) condition. This issue affects: Juniper Networks Junos OS: 19.4 versions prior to 19.4R1-S4, 19.4R3-S2; 20.1 versions prior to 20.1R2-S1, 20.1R3; 20.2 versions prior to 20.2R2-S2, 20.2R3; 20.3 versions prior to 20.3R2; Juniper Networks Junos OS Evolved: 20.3-EVO versions prior to 20.3R2-EVO; 20.4-EVO versions prior to 20.4R2-EVO. This issue does not affect: Juniper Networks Junos OS releases prior to 19.4R1. Juniper Networks Junos OS Evolved releases prior to 19.4R1-EVO."}],"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":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"}}],"problemTypes":[{"descriptions":[{"cweId":"CWE-754","description":"CWE-754 Improper Check for Unusual or Exceptional Conditions","lang":"en","type":"CWE"}]}],"providerMetadata":{"dateUpdated":"2021-07-15T20:01:01.000Z","orgId":"8cbe9d5a-a066-4c94-8978-4b15efeae968","shortName":"juniper"},"references":[{"tags":["x_refsource_CONFIRM"],"url":"https://kb.juniper.net/JSA11189"}],"solutions":[{"lang":"en","value":"The following software releases have been updated to resolve this specific issue: \n\nJunos OS: 19.4R1-S4, 19.4R3-S2, 20.1R2-S1, 20.1R3, 20.2R2-S2, 20.2R3, 20.3R2, 20.4R1, and all subsequent releases.\n\nJunos OS Evolved: 20.3R2-EVO, 20.4R2-EVO, 21.1R1-EVO, and all subsequent releases."}],"source":{"advisory":"JSA11189","defect":["1555627"],"discovery":"USER"},"title":"Junos OS and Junos OS Evolved: RPD could crash in SR-ISIS/MPLS environment due to a flap of an ISIS link in the network","workarounds":[{"lang":"en","value":"Disabling IS-IS Flexible Algorithm for Segment Routing or sensor-based statistics will mitigate this issue."}],"x_generator":{"engine":"Vulnogram 0.0.9"},"x_legacyV4Record":{"CVE_data_meta":{"ASSIGNER":"sirt@juniper.net","DATE_PUBLIC":"2021-07-14T16:00:00.000Z","ID":"CVE-2021-0287","STATE":"PUBLIC","TITLE":"Junos OS and Junos OS Evolved: RPD could crash in SR-ISIS/MPLS environment due to a flap of an ISIS link in the network"},"affects":{"vendor":{"vendor_data":[{"product":{"product_data":[{"product_name":"Junos OS","version":{"version_data":[{"version_affected":">","version_name":"19.4","version_value":"19.4R1"},{"version_affected":"<","version_name":"19.4","version_value":"19.4R1-S4, 19.4R3-S2"},{"version_affected":"<","version_name":"20.1","version_value":"20.1R2-S1, 20.1R3"},{"version_affected":"<","version_name":"20.2","version_value":"20.2R2-S2, 20.2R3"},{"version_affected":"<","version_name":"20.3","version_value":"20.3R2"},{"version_affected":"!<","version_value":"19.4R1"}]}},{"product_name":"Junos OS Evolved","version":{"version_data":[{"version_affected":">","version_name":"19.4","version_value":"19.4R1-EVO"},{"version_affected":">","version_name":"20.1","version_value":"20.1R1-EVO"},{"version_affected":">","version_name":"20.2","version_value":"20.2R1-EVO"},{"version_affected":"<","version_name":"20.3","version_value":"20.3R2-EVO"},{"version_affected":"<","version_name":"20.4","version_value":"20.4R2-EVO"},{"version_affected":"!<","version_value":"19.4R1-EVO"}]}}]},"vendor_name":"Juniper Networks"}]}},"configuration":[{"lang":"en","value":"The two config stanzas required to be affected by this issue are shown below:\n\n [ routing-options flex-algorithm <name> ]\n [ protocols isis source-packet-routing sensor-based-stats per-sid egress ]"}],"data_format":"MITRE","data_type":"CVE","data_version":"4.0","description":{"description_data":[{"lang":"eng","value":"In a Segment Routing ISIS (SR-ISIS)/MPLS environment, on Juniper Networks Junos OS and Junos OS Evolved devices, configured with ISIS Flexible Algorithm for Segment Routing and sensor-based statistics, a flap of a ISIS link in the network, can lead to a routing process daemon (RPD) crash and restart, causing a Denial of Service (DoS). Continued link flaps will create a sustained Denial of Service (DoS) condition. This issue affects: Juniper Networks Junos OS: 19.4 versions prior to 19.4R1-S4, 19.4R3-S2; 20.1 versions prior to 20.1R2-S1, 20.1R3; 20.2 versions prior to 20.2R2-S2, 20.2R3; 20.3 versions prior to 20.3R2; Juniper Networks Junos OS Evolved: 20.3-EVO versions prior to 20.3R2-EVO; 20.4-EVO versions prior to 20.4R2-EVO. This issue does not affect: Juniper Networks Junos OS releases prior to 19.4R1. Juniper Networks Junos OS Evolved releases prior to 19.4R1-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":"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"}},"problemtype":{"problemtype_data":[{"description":[{"lang":"eng","value":"CWE-754 Improper Check for Unusual or Exceptional Conditions"}]}]},"references":{"reference_data":[{"name":"https://kb.juniper.net/JSA11189","refsource":"CONFIRM","url":"https://kb.juniper.net/JSA11189"}]},"solution":[{"lang":"en","value":"The following software releases have been updated to resolve this specific issue: \n\nJunos OS: 19.4R1-S4, 19.4R3-S2, 20.1R2-S1, 20.1R3, 20.2R2-S2, 20.2R3, 20.3R2, 20.4R1, and all subsequent releases.\n\nJunos OS Evolved: 20.3R2-EVO, 20.4R2-EVO, 21.1R1-EVO, and all subsequent releases."}],"source":{"advisory":"JSA11189","defect":["1555627"],"discovery":"USER"},"work_around":[{"lang":"en","value":"Disabling IS-IS Flexible Algorithm for Segment Routing or sensor-based statistics will mitigate this issue."}]}},"adp":[{"providerMetadata":{"orgId":"af854a3a-2127-422b-91ae-364da2661108","shortName":"CVE","dateUpdated":"2024-08-03T15:32:10.669Z"},"title":"CVE Program Container","references":[{"tags":["x_refsource_CONFIRM","x_transferred"],"url":"https://kb.juniper.net/JSA11189"}]}]},"cveMetadata":{"assignerOrgId":"8cbe9d5a-a066-4c94-8978-4b15efeae968","assignerShortName":"juniper","cveId":"CVE-2021-0287","datePublished":"2021-07-15T20:01:01.666Z","dateReserved":"2020-10-27T00:00:00.000Z","dateUpdated":"2024-09-16T19:10:44.968Z","state":"PUBLISHED"},"dataType":"CVE_RECORD","dataVersion":"5.1"}