{"api_version":"1","generated_at":"2026-07-23T23:02:57+00:00","cve":"CVE-2023-22402","urls":{"html":"https://cve.report/CVE-2023-22402","api":"https://cve.report/api/cve/CVE-2023-22402.json","docs":"https://cve.report/api","cve_org":"https://www.cve.org/CVERecord?id=CVE-2023-22402","nvd":"https://nvd.nist.gov/vuln/detail/CVE-2023-22402"},"summary":{"title":"CVE-2023-22402","description":"A Use After Free vulnerability in the kernel of Juniper Networks Junos OS Evolved allows an unauthenticated, network-based attacker to cause a Denial of Service (DoS). In a Non Stop Routing (NSR) scenario, an unexpected kernel restart might be observed if \"bgp auto-discovery\" is enabled and if there is a BGP neighbor flap of auto-discovery sessions for any reason. This is a race condition which is outside of an attackers direct control and it depends on system internal timing whether this issue occurs. This issue affects Juniper Networks Junos OS Evolved: 21.3 versions prior to 21.3R3-EVO; 21.4 versions prior to 21.4R2-EVO; 22.1 versions prior to 22.1R2-EVO; 22.2 versions prior to 22.2R1-S1-EVO, 22.2R2-EVO.","state":"PUBLIC","assigner":"sirt@juniper.net","published_at":"2023-01-13 00:15:00","updated_at":"2023-01-20 14:53:00"},"problem_types":["CWE-416"],"metrics":[],"references":[{"url":"https://kb.juniper.net/JSA70198","name":"https://kb.juniper.net/JSA70198","refsource":"CONFIRM","tags":[],"title":"CEC Juniper Community","mime":"text/html","httpstatus":"200","archivestatus":"404"},{"url":"https://www.cve.org/CVERecord?id=CVE-2023-22402","name":"CVE Program record","refsource":"CVE.ORG","tags":["canonical"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2023-22402","name":"NVD vulnerability 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OS Evolved: The kernel might restart in a BGP scenario where \"bgp auto-discovery\" is enabled and such a neighbor flaps"},"affects":{"vendor":{"vendor_data":[{"product":{"product_data":[{"product_name":"Junos OS Evolved","version":{"version_data":[{"version_affected":"<","version_name":"21.3","version_value":"21.3R3-EVO"},{"version_affected":"<","version_name":"21.4","version_value":"21.4R2-EVO"},{"version_affected":"<","version_name":"22.1","version_value":"22.1R2-EVO"},{"version_affected":"<","version_name":"22.2","version_value":"22.2R1-S1-EVO, 22.2R2-EVO"}]}}]},"vendor_name":"Juniper Networks"}]}},"configuration":[{"lang":"eng","value":"To be exposed to this is issue non-stop routing (NSR) and BGP auto-discovery need to be configured:\n\n  [routing-options nonstop-routing]\n  [protocols bgp group <name> dynamic-neighbor <template> peer-auto-discovery]"}],"data_format":"MITRE","data_type":"CVE","data_version":"4.0","description":{"description_data":[{"lang":"eng","value":"A Use After Free vulnerability in the kernel of Juniper Networks Junos OS Evolved allows an unauthenticated, network-based attacker to cause a Denial of Service (DoS). In a Non Stop Routing (NSR) scenario, an unexpected kernel restart might be observed if \"bgp auto-discovery\" is enabled and if there is a BGP neighbor flap of auto-discovery sessions for any reason. This is a race condition which is outside of an attackers direct control and it depends on system internal timing whether this issue occurs. This issue affects Juniper Networks Junos OS Evolved: 21.3 versions prior to 21.3R3-EVO; 21.4 versions prior to 21.4R2-EVO; 22.1 versions prior to 22.1R2-EVO; 22.2 versions prior to 22.2R1-S1-EVO, 22.2R2-EVO."}]},"exploit":[{"lang":"eng","value":"Juniper SIRT is not aware of any malicious exploitation of this vulnerability."}],"generator":{"engine":"Vulnogram 0.0.9"},"impact":{"cvss":{"attackComplexity":"HIGH","attackVector":"NETWORK","availabilityImpact":"HIGH","baseScore":5.9,"baseSeverity":"MEDIUM","confidentialityImpact":"NONE","integrityImpact":"NONE","privilegesRequired":"NONE","scope":"UNCHANGED","userInteraction":"NONE","vectorString":"CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:H","version":"3.1"}},"problemtype":{"problemtype_data":[{"description":[{"lang":"eng","value":"CWE-416 Use After Free"}]},{"description":[{"lang":"eng","value":"Denial of Service (DoS)"}]}]},"references":{"reference_data":[{"name":"https://kb.juniper.net/JSA70198","refsource":"CONFIRM","url":"https://kb.juniper.net/JSA70198"}]},"solution":[{"lang":"eng","value":"The following software releases have been updated to resolve this specific issue: 21.3R3-EVO, 21.4R2-EVO, 22.1R2-EVO, 22.2R1-S1-EVO, 22.2R2-EVO, 22.3R1-EVO, and all subsequent releases."}],"source":{"advisory":"JSA70198","defect":["1636063"],"discovery":"USER"},"work_around":[{"lang":"eng","value":"There are no known workarounds for this issue."}]},"nvd":{"publishedDate":"2023-01-13 00:15:00","lastModifiedDate":"2023-01-20 14:53:00","problem_types":["CWE-416"],"metrics":{"baseMetricV3":{"cvssV3":{"version":"3.1","vectorString":"CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:H","attackVector":"NETWORK","attackComplexity":"HIGH","privilegesRequired":"NONE","userInteraction":"NONE","scope":"UNCHANGED","confidentialityImpact":"NONE","integrityImpact":"NONE","availabilityImpact":"HIGH","baseScore":5.9,"baseSeverity":"MEDIUM"},"exploitabilityScore":2.2,"impactScore":3.6}},"configurations":{"CVE_data_version":"4.0","nodes":[{"operator":"OR","children":[],"cpe_match":[{"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:r1-s1:*:*:*:*:*:*","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:21.3: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:21.4:-:*:*:*:*:*:*","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: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: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:21.4:r1-s2:*:*:*:*:*:*","cpe_name":[]},{"vulnerable":true,"cpe23Uri":"cpe:2.3:o:juniper:junos_os_evolved:22.2:r1:*:*:*:*:*:*","cpe_name":[]}]}]}},"legacy_mitre":{"record":null,"notes":[]}}}