{"api_version":"1","generated_at":"2026-04-22T23:31:51+00:00","cve":"CVE-2023-36833","urls":{"html":"https://cve.report/CVE-2023-36833","api":"https://cve.report/api/cve/CVE-2023-36833.json","docs":"https://cve.report/api","cve_org":"https://www.cve.org/CVERecord?id=CVE-2023-36833","nvd":"https://nvd.nist.gov/vuln/detail/CVE-2023-36833"},"summary":{"title":"CVE-2023-36833","description":"A Use After Free vulnerability in the packet forwarding engine (PFE) of Juniper Networks Junos OS Evolved on PTX10001-36MR, and PTX10004, PTX10008, PTX10016 with LC1201/1202 allows an adjacent, unauthenticated attacker to cause a Denial of Service (DoS).\n\nThe process 'aftman-bt' will crash after multiple flaps on a multicast-only fast reroute (MoFRR) enabled interface. This will cause the respective FPC to stop forwarding traffic and it needs to be rebooted to restore the service.\n\nAn indication that the system experienced this issue is the following log message:\n\n  <date> <hostname> evo-aftmand-bt[<pid>]: [Error] jexpr_fdb: sanity check failed, ... , app_name L3 Mcast Routes\n\n\n\n\nThis issue affects Juniper Networks Junos OS Evolved on PTX10001-36MR, PTX10004, PTX10008, PTX10016 with LC1201/1202:\n21.2 version 21.2R1-EVO and later versions;\n21.3 version 21.3R1-EVO and later versions;\n21.4 versions prior to 21.4R3-S3-EVO;\n22.1 version 22.1R1-EVO and later versions;\n22.2 versions prior to 22.2R3-S2-EVO;\n22.3 versions prior to 22.3R3-EVO;\n22.4 versions prior to 22.4R1-S2-EVO, 22.4R2-EVO.","state":"PUBLIC","assigner":"sirt@juniper.net","published_at":"2023-07-14 17:15:00","updated_at":"2023-07-27 13:04:00"},"problem_types":["CWE-416"],"metrics":[],"references":[{"url":"https://supportportal.juniper.net/JSA71640","name":"https://supportportal.juniper.net/JSA71640","refsource":"MISC","tags":[],"title":"CEC Juniper Community","mime":"text/html","httpstatus":"200","archivestatus":"404"},{"url":"https://www.cve.org/CVERecord?id=CVE-2023-36833","name":"CVE Program record","refsource":"CVE.ORG","tags":["canonical"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2023-36833","name":"NVD vulnerability detail","refsource":"NVD","tags":["canonical","analysis"]}],"affected":[],"timeline":[],"solutions":[],"workarounds":[],"exploits":[],"credits":[],"nvd_cpes":[{"cve_year":"2023","cve_id":"36833","vulnerable":"1","versionEndIncluding":"","cpe1":"cpe","cpe2":"2.3","cpe3":"o","cpe4":"juniper","cpe5":"junos_os_evolved","cpe6":"21.2","cpe7":"-","cpe8":"*","cpe9":"*","cpe10":"*","cpe11":"*","cpe12":"*","cpe13":"*"},{"cve_year":"2023","cve_id":"36833","vulnerable":"1","versionEndIncluding":"","cpe1":"cpe","cpe2":"2.3","cpe3":"o","cpe4":"juniper","cpe5":"junos_os_evolved","cpe6":"21.2","cpe7":"r1","cpe8":"*","cpe9":"*","cpe10":"*","cpe11":"*","cpe12":"*","cpe13":"*"},{"cve_year":"2023","cve_id":"36833","vulnerable":"1","versionEndIncluding":"","cpe1":"cpe","cpe2":"2.3","cpe3":"o","cpe4":"juniper","cpe5":"junos_os_evolved","cpe6":"21.2","cpe7":"r1-s1","cpe8":"*","cpe9":"*","cpe10":"*","cpe11":"*","cpe12":"*","cpe13":"*"},{"cve_year":"2023","cve_id":"36833","vulnerable":"1","versionEndIncluding":"","cpe1":"cpe","cpe2":"2.3","cpe3":"o","cpe4":"juniper","cpe5":"junos_os_evolved","cpe6":"21.2","cpe7":"r1-s2","cpe8":"*","cpe9":"*","cpe10":"*","cpe11":"*","cpe12":"*","cpe13":"*"},{"cve_year":"2023","cve_id":"36833","vulnerable":"1","versionEndIncluding":"","cpe1":"cpe","cpe2":"2.3","cpe3":"o","cpe4":"juniper","cpe5":"junos_os_evolved","cpe6":"21.2","cpe7":"r2","cpe8":"*","cpe9":"*","cpe10":"*","cpe11":"*","cpe12":"*","cpe13":"*"},{"cve_year":"2023","cve_id":"36833","vulnerable":"1","versionEndIncluding":"","cpe1":"cpe","cpe2":"2.3","cpe3":"o","cpe4":"juniper","cpe5":"junos_os_evolved","cpe6":"21.2","cpe7":"r2-s1","cpe8":"*","cpe9":"*","cpe10":"*","cpe11":"*","cpe12":"*","cpe13":"*"},{"cve_year":"2023","cve_id":"36833","vulnerable":"1","versionEndIncluding":"","cpe1":"cpe","cpe2":"2.3","cpe3":"o","cpe4":"juniper","cpe5":"junos_os_evolved","cpe6":"21.2","cpe7":"r2-s2","cpe8":"*","cpe9":"*","cpe10":"*","cpe11":"*","cpe12":"*","cpe13":"*"},{"cve_year":"2023","cve_id":"36833","vulnerable":"1","versionEndIncluding":"","cpe1":"cpe","cpe2":"2.3","cpe3":"o","cpe4":"juniper","cpe5":"junos_os_evolved","cpe6":"21.2","cpe7":"r3","cpe8":"*","cpe9":"*","cpe10":"*","cpe11":"*","cpe12":"*","cpe13":"*"},{"cve_year":"2023","cve_id":"36833","vulnerable":"1","versionEndIncluding":"","cpe1":"cpe","cpe2":"2.3","cpe3":"o","cpe4":"juniper","cpe5":"junos_os_evolved","cpe6":"21.2","cpe7":"r3-s1","cpe8":"*","cpe9":"*","cpe10":"*","cpe11":"*","cpe12":"*","cpe13":"*"},{"cve_year":"2023","cve_id":"36833","vulnerable":"1","versionEndIncluding":"","cpe1":"cpe","cpe2":"2.3","cpe3":"o","cpe4":"juniper","cpe5":"junos_os_evolved","cpe6":"21.2","cpe7":"r3-s2","cpe8":"*","cpe9":"*","cpe10":"*","cpe11":"*","cpe12":"*","cpe13":"*"},{"cve_year":"2023","cve_id":"36833","vulnerable":"1","versionEndIncluding":"","cpe1":"cpe","cpe2":"2.3","cpe3":"o","cpe4":"juniper","cpe5":"junos_os_evolved","cpe6":"21.2","cpe7":"r3-s3","cpe8":"*","cpe9":"*","cpe10":"*","cpe11":"*","cpe12":"*","cpe13":"*"},{"cve_year":"2023","cve_id":"36833","vulnerable":"1","versionEndIncluding":"","cpe1":"cpe","cpe2":"2.3","cpe3":"o","cpe4":"juniper","cpe5":"junos_os_evolved","cpe6":"21.2","cpe7":"r3-s4","cpe8":"*","cpe9":"*","cpe10":"*","cpe11":"*","cpe12":"*","cpe13":"*"},{"cve_year":"2023","cve_id":"36833","vulnerable":"1","versionEndIncluding":"","cpe1":"cpe","cpe2":"2.3","cpe3":"o","cpe4":"juniper","cpe5":"junos_os_evolved","cpe6":"21.2","cpe7":"r3-s5","cpe8":"*","cpe9":"*","cpe10":"*","cpe11":"*","cpe12":"*","cpe13":"*"},{"cve_year":"2023","cve_id":"36833","vulnerable":"1","versionEndIncluding":"","cpe1":"cpe","cpe2":"2.3","cpe3":"o","cpe4":"juniper","cpe5":"junos_os_evolved","cpe6":"21.3","cpe7":"-","cpe8":"*","cpe9":"*","cpe10":"*","cpe11":"*","cpe12":"*","cpe13":"*"},{"cve_year":"2023","cve_id":"36833","vulnerable":"1","versionEndIncluding":"","cpe1":"cpe","cpe2":"2.3","cpe3":"o","cpe4":"juniper","cpe5":"junos_os_evolved","cpe6":"21.3","cpe7":"r1","cpe8":"*","cpe9":"*","cpe10":"*","cpe11":"*","cpe12":"*","cpe13":"*"},{"cve_year":"2023","cve_id":"36833","vulnerable":"1","versionEndIncluding":"","cpe1":"cpe","cpe2":"2.3","cpe3":"o","cpe4":"juniper","cpe5":"junos_os_evolved","cpe6":"21.3","cpe7":"r1-s1","cpe8":"*","cpe9":"*","cpe10":"*","cpe11":"*","cpe12":"*","cpe13":"*"},{"cve_year":"2023","cve_id":"36833","vulnerable":"1","versionEndIncluding":"","cpe1":"cpe","cpe2":"2.3","cpe3":"o","cpe4":"juniper","cpe5":"junos_os_evolved","cpe6":"21.3","cpe7":"r2","cpe8":"*","cpe9":"*","cpe10":"*","cpe11":"*","cpe12":"*","cpe13":"*"},{"cve_year":"2023","cve_id":"36833","vulnerable":"1","versionEndIncluding":"","cpe1":"cpe","cpe2":"2.3","cpe3":"o","cpe4":"juniper","cpe5":"junos_os_evolved","cpe6":"21.3","cpe7":"r2-s1","cpe8":"*","cpe9":"*","cpe10":"*","cpe11":"*","cpe12":"*","cpe13":"*"},{"cve_year":"2023","cve_id":"36833","vulnerable":"1","versionEndIncluding":"","cpe1":"cpe","cpe2":"2.3","cpe3":"o","cpe4":"juniper","cpe5":"junos_os_evolved","cpe6":"21.3","cpe7":"r2-s2","cpe8":"*","cpe9":"*","cpe10":"*"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Use After Free vulnerability in the packet forwarding engine (PFE) of Juniper Networks Junos OS Evolved on PTX10001-36MR, and PTX10004, PTX10008, PTX10016 with LC1201/1202 allows an adjacent, unauthenticated attacker to cause a Denial of Service (DoS).\n\nThe process 'aftman-bt' will crash after multiple flaps on a multicast-only fast reroute (MoFRR) enabled interface. This will cause the respective FPC to stop forwarding traffic and it needs to be rebooted to restore the service.\n\nAn indication that the system experienced this issue is the following log message:\n\n  <date> <hostname> evo-aftmand-bt[<pid>]: [Error] jexpr_fdb: sanity check failed, ... , app_name L3 Mcast Routes\n\n\n\n\nThis issue affects Juniper Networks Junos OS Evolved on PTX10001-36MR, PTX10004, PTX10008, PTX10016 with LC1201/1202:\n21.2 version 21.2R1-EVO and later versions;\n21.3 version 21.3R1-EVO and later versions;\n21.4 versions prior to 21.4R3-S3-EVO;\n22.1 version 22.1R1-EVO and later versions;\n22.2 versions prior to 22.2R3-S2-EVO;\n22.3 versions prior to 22.3R3-EVO;\n22.4 versions prior to 22.4R1-S2-EVO, 22.4R2-EVO.\n\n\n\n"}]},"problemtype":{"problemtype_data":[{"description":[{"lang":"eng","value":"CWE-416 Use After Free","cweId":"CWE-416"}]},{"description":[{"lang":"eng","value":"Denial of Service (DoS)"}]}]},"affects":{"vendor":{"vendor_data":[{"vendor_name":"Juniper Networks","product":{"product_data":[{"product_name":"Junos OS Evolved","version":{"version_data":[{"version_value":"not down converted","x_cve_json_5_version_data":{"versions":[{"changes":[{"at":"21.2R1-EVO","status":"affected"}],"lessThan":"21.2*","status":"affected","version":"21.2","versionType":"custom"},{"changes":[{"at":"21.3R1-EVO","status":"affected"}],"lessThan":"21.3*","status":"affected","version":"21.3","versionType":"custom"},{"lessThan":"21.4R3-S3-EVO","status":"affected","version":"21.4","versionType":"custom"},{"changes":[{"at":"22.1R1-EVO","status":"affected"}],"lessThan":"22.1*","status":"affected","version":"22.1","versionType":"custom"},{"lessThan":"22.2R3-S2-EVO","status":"affected","version":"22.2","versionType":"custom"},{"lessThan":"22.3R3-EVO","status":"affected","version":"22.3","versionType":"custom"},{"lessThan":"22.4R1-S2-EVO, 22.4R2-EVO","status":"affected","version":"22.4","versionType":"custom"}],"defaultStatus":"unaffected"}}]}}]}}]}},"references":{"reference_data":[{"url":"https://supportportal.juniper.net/JSA71640","refsource":"MISC","name":"https://supportportal.juniper.net/JSA71640"}]},"generator":{"engine":"Vulnogram 0.1.0-dev"},"source":{"advisory":"JSA71640","defect":["1671799"],"discovery":"USER"},"configuration":[{"lang":"en","supportingMedia":[{"base64":false,"type":"text/html","value":"To be exposed to this issue an interfaces need to be configured for multicast-only fast reroute (MoFRR) as follows:<br><br><tt>&nbsp; [ routing-options multicast stream-protection ]</tt>"}],"value":"To be exposed to this issue an interfaces need to be configured for multicast-only fast reroute (MoFRR) as follows:\n\n  [ routing-options multicast stream-protection ]"}],"work_around":[{"lang":"en","supportingMedia":[{"base64":false,"type":"text/html","value":"There are no known workarounds for this issue.<br>"}],"value":"There are no known workarounds for this issue.\n"}],"exploit":[{"lang":"en","supportingMedia":[{"base64":false,"type":"text/html","value":"Juniper SIRT is not aware of any malicious exploitation of this vulnerability.<br>"}],"value":"Juniper SIRT is not aware of any malicious exploitation of this vulnerability.\n"}],"solution":[{"lang":"en","supportingMedia":[{"base64":false,"type":"text/html","value":"The following software releases have been updated to resolve this specific issue: Junos OS Evolved 21.4R3-S3-EVO, 22.2R3-S2-EVO*, 22.3R3-EVO, 22.4R1-S2-EVO, 22.4R2-EVO, 23.1R1-EVO, and all subsequent releases.<br>"}],"value":"The following software releases have been updated to resolve this specific issue: Junos OS Evolved 21.4R3-S3-EVO, 22.2R3-S2-EVO*, 22.3R3-EVO, 22.4R1-S2-EVO, 22.4R2-EVO, 23.1R1-EVO, and all subsequent releases.\n"}],"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"}]}},"nvd":{"publishedDate":"2023-07-14 17:15:00","lastModifiedDate":"2023-07-27 13:04:00","problem_types":["CWE-416"],"metrics":{"baseMetricV3":{"cvssV3":{"version":"3.1","vectorString":"CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H","attackVector":"ADJACENT_NETWORK","attackComplexity":"LOW","privilegesRequired":"NONE","userInteraction":"NONE","scope":"UNCHANGED","confidentialityImpact":"NONE","integrityImpact":"NONE","availabilityImpact":"HIGH","baseScore":6.5,"baseSeverity":"MEDIUM"},"exploitabilityScore":2.8,"impactScore":3.6}},"configurations":{"CVE_data_version":"4.0","nodes":[{"operator":"AND","children":[{"operator":"OR","children":[],"cpe_match":[{"vulnerable":true,"cpe23Uri":"cpe:2.3:o:juniper:junos_os_evolved:21.2:r1:*:*:*:*:*:*","cpe_name":[]},{"vulnerable":true,"cpe23Uri":"cpe:2.3:o:juniper:junos_os_evolved:21.2:r1-s1:*:*:*:*:*:*","cpe_name":[]},{"vulnerable":true,"cpe23Uri":"cpe:2.3:o:juniper:junos_os_evolved:21.2:r2:*:*:*:*:*:*","cpe_name":[]},{"vulnerable":true,"cpe23Uri":"cpe:2.3:o:juniper:junos_os_evolved:21.2:-:*:*:*:*:*:*","cpe_name":[]},{"vulnerable":true,"cpe23Uri":"cpe:2.3:o:juniper:junos_os_evolved:21.2:r1-s2:*:*:*:*:*:*","cpe_name":[]},{"vulnerable":true,"cpe23Uri":"cpe:2.3:o:juniper:junos_os_evolved:21.2:r2-s1:*:*:*:*:*:*","cpe_name":[]},{"vulnerable":true,"cpe23Uri":"cpe:2.3:o:juniper:junos_os_evolved:21.2:r2-s2:*:*:*:*:*:*","cpe_name":[]},{"vulnerable":true,"cpe23Uri":"cpe:2.3:o:juniper:junos_os_evolved:21.2:r3:*:*:*:*:*:*","cpe_name":[]},{"vulnerable":true,"cpe23Uri":"cpe:2.3:o:juniper:junos_os_evolved:21.2:r3-s1:*:*:*:*:*:*","cpe_name":[]},{"vulnerable":true,"cpe23Uri":"cpe:2.3:o:juniper:junos_os_evolved:21.2:r3-s2:*:*:*:*:*:*","cpe_name":[]},{"vulnerable":true,"cpe23Uri":"cpe:2.3:o:juniper:junos_os_evolved:21.2:r3-s3:*:*:*:*:*:*","cpe_name":[]},{"vulnerable":true,"cpe23Uri":"cpe:2.3:o:juniper:junos_os_evolved:21.2:r3-s4:*:*:*:*:*:*","cpe_name":[]},{"vulnerable":true,"cpe23Uri":"cpe:2.3:o:juniper:junos_os_evolved:21.2:r3-s5:*:*:*:*:*:*","cpe_name":[]},{"vulnerable":true,"cpe23Uri":"cpe:2.3:o:juniper:junos_os_evolved:21.3:r3-s4:*:*:*:*:*:*","cpe_name":[]},{"vulnerable":true,"cpe23Uri":"cpe:2.3:o:juniper:junos_os_evolved:21.3:r3:*:*:*:*:*:*","cpe_name":[]},{"vulnerable":true,"cpe23Uri":"cpe:2.3:o:juniper:junos_os_evolved:21.3:r2:*:*:*:*:*:*","cpe_name":[]},{"vulnerable":true,"cpe23Uri":"cpe:2.3:o:juniper:junos_os_evolved:21.3:-:*:*:*:*:*:*","cpe_name":[]},{"vulnerable":true,"cpe23Uri":"cpe:2.3:o:juniper:junos_os_evolved:21.3:r2-s1:*:*:*:*:*:*","cpe_name":[]},{"vulnerable":true,"cpe23Uri":"cpe:2.3:o:juniper:junos_os_evolved:21.3:r2-s2:*:*:*:*:*:*","cpe_name":[]},{"vulnerable":true,"cpe23Uri":"cpe:2.3:o:juniper:junos_os_evolved:21.3:r1-s1:*:*:*:*:*:*","cpe_name":[]},{"vulnerable":true,"cpe23Uri":"cpe:2.3:o:juniper:junos_os_evolved:21.3:r1:*:*:*:*:*:*","cpe_name":[]},{"vulnerable":true,"cpe23Uri":"cpe:2.3:o:juniper:junos_os_evolved:21.3:r3-s1:*:*:*:*:*:*","cpe_name":[]},{"vulnerable":true,"cpe23Uri":"cpe:2.3:o:juniper:junos_os_evolved:21.3:r3-s2:*:*:*:*:*:*","cpe_name":[]},{"vulnerable":true,"cpe23Uri":"cpe:2.3:o:juniper:junos_os_evolved:21.3:r3-s3:*:*:*:*:*:*","cpe_name":[]},{"vulnerable":true,"cpe23Uri":"cpe:2.3:o:juniper:junos_os_evolved:21.4:r3:*:*:*:*:*:*","cpe_name":[]},{"vulnerable":true,"cpe23Uri":"cpe:2.3:o:juniper:junos_os_evolved:21.4:r1:*:*:*:*:*:*","cpe_name":[]},{"vulnerable":true,"cpe23Uri":"cpe:2.3:o:juniper:junos_os_evolved:21.4:r1-s1:*:*:*:*:*:*","cpe_name":[]},{"vulnerable":true,"cpe23Uri":"cpe:2.3:o:juniper:junos_os_evolved:21.4:r2:*:*:*:*:*:*","cpe_name":[]},{"vulnerable":true,"cpe23Uri":"cpe:2.3:o:juniper:junos_os_evolved:21.4:r2-s1:*:*:*:*:*:*","cpe_name":[]},{"vulnerable":true,"cpe23Uri":"cpe:2.3:o:juniper:junos_os_evolved:21.4:r2-s2:*:*:*:*:*:*","cpe_name":[]},{"vulnerable":true,"cpe23Uri":"cpe:2.3:o:juniper:junos_os_evolved:21.4:-:*:*:*:*:*:*","cpe_name":[]},{"vulnerable":true,"cpe23Uri":"cpe:2.3:o:juniper:junos_os_evolved:21.4:r1-s2:*:*:*:*:*:*","cpe_name":[]},{"vulnerable":true,"cpe23Uri":"cpe:2.3:o:juniper:junos_os_evolved:21.4:r3-s1:*:*:*:*:*:*","cpe_name":[]},{"vulnerable":true,"cpe23Uri":"cpe:2.3:o:juniper:junos_os_evolved:21.4:r3-s2:*:*:*:*:*:*","cpe_name":[]},{"vulnerable":true,"cpe23Uri":"cpe:2.3:o:juniper:junos_os_evolved:22.1:r3-s1:*:*:*:*:*:*","cpe_name":[]},{"vulnerable":true,"cpe23Uri":"cpe:2.3:o:juniper:junos_os_evolved:22.1:r3-s2:*:*:*:*:*:*","cpe_name":[]},{"vulnerable":true,"cpe23Uri":"cpe:2.3:o:juniper:junos_os_evolved:22.1:r1:*:*:*:*:*:*","cpe_name":[]},{"vulnerable":true,"cpe23Uri":"cpe:2.3:o:juniper:junos_os_evolved:22.1:r1-s1:*:*:*:*:*:*","cpe_name":[]},{"vulnerable":true,"cpe23Uri":"cpe:2.3:o:juniper:junos_os_evolved:22.1:r1-s2:*:*:*:*:*:*","cpe_name":[]},{"vulnerable":true,"cpe23Uri":"cpe:2.3:o:juniper:junos_os_evolved:22.1:r2:*:*:*:*:*:*","cpe_name":[]},{"vulnerable":true,"cpe23Uri":"cpe:2.3:o:juniper:junos_os_evolved:22.1:r2-s1:*:*:*:*:*:*","cpe_name":[]},{"vulnerable":true,"cpe23Uri":"cpe:2.3:o:juniper:junos_os_evolved:22.1:r3:*:*:*:*:*:*","cpe_name":[]},{"vulnerable":true,"cpe23Uri":"cpe:2.3:o:juniper:junos_o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