{"id":"CVE-2024-39517","state":"PUBLISHED","title":"Junos OS and Junos OS Evolved: Upon processing specific L2 traffic, rpd can hang in devices with EVPN/VXLAN configured","description":"An Improper Check for Unusual or Exceptional Conditions vulnerability in the Layer 2 Address Learning Daemon (l2ald) on Juniper Networks Junos OS and Junos OS Evolved allows an unauthenticated, adjacent attacker to cause Denial of Service (DoS).\n\nIn an EVPN/VXLAN scenario, when a high amount specific Layer 2 packets are processed by the device, it can cause the Routing Protocol Daemon (rpd) to utilize all CPU resources which causes the device to hang. A manual restart of the rpd is required to restore services.\n\nThis issue affects both IPv4 and IPv6 implementations.\nThis issue affects\nJunos OS:\nAll versions earlier than 21.4R3-S7;\n22.1 versions earlier than 22.1R3-S5;\n22.2 versions earlier than 22.2R3-S3;\n22.3 versions earlier than 22.3R3-S3;\n22.4 versions earlier than 22.4R3-S2;\n23.2 versions earlier than 23.2R2;\n23.4 versions earlier than 23.4R1-S1.\n\nJunos OS Evolved:\nAll versions earlier than 21.4R3-S7-EVO;\n22.1-EVO versions earlier than 22.1R3-S5-EVO;\n22.2-EVO versions earlier than 22.2R3-S3-EVO;\n22.3-EVO versions earlier than 22.3R3-S3-EVO;\n22.4-EVO versions earlier than 22.4R3-S2-EVO;\n23.2-EVO versions earlier than 23.2R2-EVO;\n23.4-EVO versions earlier than 23.4R1-S1-EVO, 23.4R2-EVO.","publishedAt":"2024-07-10T23:06:40.329Z","updatedAt":"2024-08-02T04:26:15.885Z","severity":{"score":7.1,"label":"High","version":"4.0","vector":"CVSS:4.0/AV:A/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:L","source":"juniper"},"assigner":"juniper","products":["Juniper Networks Junos OS","Juniper Networks Junos OS Evolved"],"affected":[{"vendor":"Juniper Networks","product":"Junos OS","defaultStatus":"unaffected","versions":[{"version":"0","status":"affected","lessThan":"21.2R3-S8","versionType":"semver"},{"version":"21.4","status":"affected","lessThan":"21.4R3-S7","versionType":"semver"},{"version":"22.1","status":"affected","lessThan":"22.1R3-S5","versionType":"semver"},{"version":"22.2","status":"affected","lessThan":"22.2R3-S3","versionType":"semver"},{"version":"22.3","status":"affected","lessThan":"22.3R3-S3","versionType":"semver"},{"version":"22.4","status":"affected","lessThan":"22.4R3-S2","versionType":"semver"},{"version":"23.2","status":"affected","lessThan":"23.2R2","versionType":"semver"},{"version":"23.4","status":"affected","lessThan":"23.4R1-S1","versionType":"semver"}]},{"vendor":"Juniper Networks","product":"Junos OS Evolved","defaultStatus":"unaffected","versions":[{"version":"0","status":"affected","lessThan":"21.2R3-S8-EVO","versionType":"semver"},{"version":"21.4-EVO","status":"affected","lessThan":"21.4R3-S7-EVO","versionType":"semver"},{"version":"22.1-EVO","status":"affected","lessThan":"22.1R3-S5-EVO","versionType":"semver"},{"version":"22.2-EVO","status":"affected","lessThan":"22.2R3-S3-EVO","versionType":"semver"},{"version":"22.3-EVO","status":"affected","lessThan":"22.3R3-S3-EVO","versionType":"semver"},{"version":"22.4-EVO","status":"affected","lessThan":"22.4R3-S2-EVO","versionType":"semver"},{"version":"23.2-EVO","status":"affected","lessThan":"23.2R2-EVO","versionType":"semver"},{"version":"23.4-EVO","status":"affected","lessThan":"23.4R1-S1-EVO, 23.4R2-EVO","versionType":"semver"}]}],"references":["https://supportportal.juniper.net/JSA79175"],"weaknesses":["CWE-754"],"ingestedAt":"2026-10-29T20:07:39.287Z","source":{"repository":"CVEProject/cvelistV5","path":"cves/2024/39xxx/CVE-2024-39517.json","commit":"556c9d3a8cd17e218bb8e452ba7cd619a384ff47"},"raw":{"dataType":"CVE_RECORD","dataVersion":"5.1","cveMetadata":{"cveId":"CVE-2024-39517","state":"PUBLISHED","datePublished":"2024-07-10T23:06:40.329Z","dateUpdated":"2024-08-02T04:26:15.885Z","assignerShortName":"juniper","assignerOrgId":"8cbe9d5a-a066-4c94-8978-4b15efeae968","dateReserved":"2024-06-25T15:12:53.239Z"},"containers":{"cna":{"title":"Junos OS and Junos OS Evolved: Upon processing specific L2 traffic, rpd can hang in devices with EVPN/VXLAN configured","descriptions":[{"lang":"en","value":"An Improper Check for Unusual or Exceptional Conditions vulnerability in the Layer 2 Address Learning Daemon (l2ald) on Juniper Networks Junos OS and Junos OS Evolved allows an unauthenticated, adjacent attacker to cause Denial of Service (DoS).\n\nIn an EVPN/VXLAN scenario, when a high amount specific Layer 2 packets are processed by the device, it can cause the Routing Protocol Daemon (rpd) to utilize all CPU resources which causes the device to hang. A manual restart of the rpd is required to restore services.\n\nThis issue affects both IPv4 and IPv6 implementations.\nThis issue affects\nJunos OS:\nAll versions earlier than 21.4R3-S7;\n22.1 versions earlier than 22.1R3-S5;\n22.2 versions earlier than 22.2R3-S3;\n22.3 versions earlier than 22.3R3-S3;\n22.4 versions earlier than 22.4R3-S2;\n23.2 versions earlier than 23.2R2;\n23.4 versions earlier than 23.4R1-S1.\n\nJunos OS Evolved:\nAll versions earlier than 21.4R3-S7-EVO;\n22.1-EVO versions earlier than 22.1R3-S5-EVO;\n22.2-EVO versions earlier than 22.2R3-S3-EVO;\n22.3-EVO versions earlier than 22.3R3-S3-EVO;\n22.4-EVO versions earlier than 22.4R3-S2-EVO;\n23.2-EVO versions earlier than 23.2R2-EVO;\n23.4-EVO versions earlier than 23.4R1-S1-EVO, 23.4R2-EVO."}],"affected":[{"vendor":"Juniper Networks","product":"Junos OS","defaultStatus":"unaffected","versions":[{"version":"0","status":"affected","lessThan":"21.2R3-S8","versionType":"semver"},{"version":"21.4","status":"affected","lessThan":"21.4R3-S7","versionType":"semver"},{"version":"22.1","status":"affected","lessThan":"22.1R3-S5","versionType":"semver"},{"version":"22.2","status":"affected","lessThan":"22.2R3-S3","versionType":"semver"},{"version":"22.3","status":"affected","lessThan":"22.3R3-S3","versionType":"semver"},{"version":"22.4","status":"affected","lessThan":"22.4R3-S2","versionType":"semver"},{"version":"23.2","status":"affected","lessThan":"23.2R2","versionType":"semver"},{"version":"23.4","status":"affected","lessThan":"23.4R1-S1","versionType":"semver"}]},{"vendor":"Juniper Networks","product":"Junos OS Evolved","defaultStatus":"unaffected","versions":[{"version":"0","status":"affected","lessThan":"21.2R3-S8-EVO","versionType":"semver"},{"version":"21.4-EVO","status":"affected","lessThan":"21.4R3-S7-EVO","versionType":"semver"},{"version":"22.1-EVO","status":"affected","lessThan":"22.1R3-S5-EVO","versionType":"semver"},{"version":"22.2-EVO","status":"affected","lessThan":"22.2R3-S3-EVO","versionType":"semver"},{"version":"22.3-EVO","status":"affected","lessThan":"22.3R3-S3-EVO","versionType":"semver"},{"version":"22.4-EVO","status":"affected","lessThan":"22.4R3-S2-EVO","versionType":"semver"},{"version":"23.2-EVO","status":"affected","lessThan":"23.2R2-EVO","versionType":"semver"},{"version":"23.4-EVO","status":"affected","lessThan":"23.4R1-S1-EVO, 23.4R2-EVO","versionType":"semver"}]}],"references":[{"url":"https://supportportal.juniper.net/JSA79175","tags":["vendor-advisory"]}],"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"},"format":"CVSS","scenarios":[{"lang":"en","value":"GENERAL"}]},{"cvssV4_0":{"Automatable":"NOT_DEFINED","Recovery":"NOT_DEFINED","Safety":"NOT_DEFINED","attackComplexity":"LOW","attackRequirements":"NONE","attackVector":"ADJACENT","baseScore":7.1,"baseSeverity":"HIGH","privilegesRequired":"NONE","providerUrgency":"NOT_DEFINED","subAvailabilityImpact":"LOW","subConfidentialityImpact":"NONE","subIntegrityImpact":"NONE","userInteraction":"NONE","valueDensity":"NOT_DEFINED","vectorString":"CVSS:4.0/AV:A/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:L","version":"4.0","vulnAvailabilityImpact":"HIGH","vulnConfidentialityImpact":"NONE","vulnIntegrityImpact":"NONE","vulnerabilityResponseEffort":"NOT_DEFINED"},"format":"CVSS","scenarios":[{"lang":"en","value":"GENERAL"}]}],"problemTypes":[{"descriptions":[{"cweId":"CWE-754","description":"CWE-754 Improper Check for Unusual or Exceptional Conditions","lang":"eng","type":"CWE"}]}],"providerMetadata":{"shortName":"juniper","orgId":"8cbe9d5a-a066-4c94-8978-4b15efeae968","dateUpdated":"2024-07-10T23:06:40.329Z"},"configurations":[{"lang":"en","supportingMedia":[{"base64":false,"type":"text/html","value":"<p>EVPN is configured on the device:<br></p><tt><span style=\"background-color: var(--wht);\">&nbsp; </span><span style=\"background-color: var(--wht);\">[protocols evpn]</span></tt><p>To be exposed to this issue the device needs be configured for VXLAN with either of the following statements:<br></p><tt><span style=\"background-color: var(--wht);\">&nbsp; [vlans &lt;vlan&gt; vxlan]<br></span><span style=\"background-color: var(--wht);\">&nbsp; [routing-instances &lt;routing-instance&gt; vxlan]</span></tt>"}],"value":"EVPN is configured on the device:\n\n\n  [protocols evpn]To be exposed to this issue the device needs be configured for VXLAN with either of the following statements:\n\n\n  [vlans <vlan> vxlan]\n  [routing-instances <routing-instance> vxlan]"}],"datePublic":"2024-07-10T16:00:00.000Z","exploits":[{"lang":"eng","supportingMedia":[{"base64":false,"type":"text/html","value":"Juniper SIRT is not aware of any malicious exploitation of this vulnerability."}],"value":"Juniper SIRT is not aware of any malicious exploitation of this vulnerability."}],"solutions":[{"lang":"eng","supportingMedia":[{"base64":false,"type":"text/html","value":"The following software releases have been updated to resolve this specific issue:&nbsp;<br>\nJunos OS:&nbsp;21.4R3-S7,&nbsp;<span style=\"background-color: rgb(255, 255, 255);\">22.1R3-S5, 22.2R3-S3, 22.3R3-S3, 22.4R3-S2, 23.2R2, 23.4R1-S1, 23.4R2, 24.2R1, and all subsequent releases.<br></span>Junos OS Evolved:&nbsp;21.4R3-S7-EVO,&nbsp;<span style=\"background-color: rgb(255, 255, 255);\">22.1R3-S5-EVO, 22.2R3-S3-EVO, 22.3R3-S3-EVO,&nbsp;22.4R3-S2-EVO,&nbsp;23.2R2-EVO, 23.4R1-S1-EVO, 23.4R2-EVO, 24.2R1-EVO, and all subsequent releases.</span><br>"}],"value":"The following software releases have been updated to resolve this specific issue: \n\nJunos OS: 21.4R3-S7, 22.1R3-S5, 22.2R3-S3, 22.3R3-S3, 22.4R3-S2, 23.2R2, 23.4R1-S1, 23.4R2, 24.2R1, and all subsequent releases.\nJunos OS Evolved: 21.4R3-S7-EVO, 22.1R3-S5-EVO, 22.2R3-S3-EVO, 22.3R3-S3-EVO, 22.4R3-S2-EVO, 23.2R2-EVO, 23.4R1-S1-EVO, 23.4R2-EVO, 24.2R1-EVO, and all subsequent releases."}],"source":{"advisory":"JSA79175","defect":["1783346"],"discovery":"INTERNAL"},"workarounds":[{"lang":"en","supportingMedia":[{"base64":false,"type":"text/html","value":"There are no known workarounds for this issue."}],"value":"There are no known workarounds for this issue."}],"x_generator":{"engine":"Vulnogram 0.1.0-dev"}},"adp":[{"title":"CISA ADP Vulnrichment","metrics":[{"other":{"type":"ssvc","content":{"timestamp":"2024-07-11T13:08:45.672820Z","id":"CVE-2024-39517","options":[{"Exploitation":"none"},{"Automatable":"no"},{"Technical Impact":"partial"}],"role":"CISA Coordinator","version":"2.0.3"}}}],"providerMetadata":{"shortName":"CISA-ADP","orgId":"134c704f-9b21-4f2e-91b3-4a467353bcc0","dateUpdated":"2024-07-11T13:09:04.536Z"}},{"title":"CVE Program Container","references":[{"url":"https://supportportal.juniper.net/JSA79175","tags":["vendor-advisory","x_transferred"]}],"providerMetadata":{"shortName":"CVE","orgId":"af854a3a-2127-422b-91ae-364da2661108","dateUpdated":"2024-08-02T04:26:15.885Z"}}]}}}