{"id":"CVE-2024-21595","state":"PUBLISHED","title":"Junos OS: EX4100, EX4400, EX4600, QFX5000 Series: A high rate of specific ICMP traffic will cause the PFE to hang","description":"\nAn Improper Validation of Syntactic Correctness of Input vulnerability in the Packet Forwarding Engine (PFE) of Juniper Networks Junos OS allows a network-based, unauthenticated attacker to cause a Denial of Service (DoS).\n\nIf an attacker sends high rate of specific ICMP traffic to a device with VXLAN configured, this causes a deadlock of the PFE and results in the device becoming unresponsive. A manual restart will be required to recover the device.\n\nThis issue only affects EX4100, EX4400, EX4600, QFX5000 Series devices.\n\nThis issue affects:\n\nJuniper Networks Junos OS\n\n\n\n  *  21.4R3 versions earlier than 21.4R3-S4;\n  *  22.1R3 versions earlier than 22.1R3-S3;\n  *  22.2R2 versions earlier than 22.2R3-S1;\n  *  22.3 versions earlier than 22.3R2-S2, 22.3R3;\n  *  22.4 versions earlier than 22.4R2;\n  *  23.1 versions earlier than 23.1R2.\n\n\n\n\n\n\n","publishedAt":"2024-01-12T00:52:35.433Z","updatedAt":"2024-09-03T18:13:05.922Z","severity":{"score":7.5,"label":"High","version":"3.1","vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H","source":"juniper"},"assigner":"juniper","products":["Juniper Networks Junos OS"],"affected":[{"vendor":"Juniper Networks","product":"Junos OS","defaultStatus":"unaffected","versions":[{"version":"21.4R3","status":"affected","lessThan":"21.4R3-S4","versionType":"semver"},{"version":"22.1R3","status":"affected","lessThan":"22.1R3-S3","versionType":"semver"},{"version":"22.2R2","status":"affected","lessThan":"22.2R3-S1","versionType":"semver"},{"version":"22.3","status":"affected","lessThan":"22.3R2-S2, 22.3R3","versionType":"semver"},{"version":"22.4","status":"affected","lessThan":"22.4R2","versionType":"semver"},{"version":"23.1","status":"affected","lessThan":"23.1R2","versionType":"semver"}],"platforms":["EX4100","EX4400","EX4600","QFX5000 Series"]}],"references":["https://advisory.juniper.net/JSA75734","https://www.first.org/cvss/calculator/4.0#CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N"],"weaknesses":["CWE-1286"],"ingestedAt":"2026-10-29T20:06:59.846Z","source":{"repository":"CVEProject/cvelistV5","path":"cves/2024/21xxx/CVE-2024-21595.json","commit":"556c9d3a8cd17e218bb8e452ba7cd619a384ff47"},"raw":{"dataType":"CVE_RECORD","dataVersion":"5.1","cveMetadata":{"cveId":"CVE-2024-21595","state":"PUBLISHED","datePublished":"2024-01-12T00:52:35.433Z","dateUpdated":"2024-09-03T18:13:05.922Z","assignerShortName":"juniper","assignerOrgId":"8cbe9d5a-a066-4c94-8978-4b15efeae968","dateReserved":"2023-12-27T19:38:25.704Z"},"containers":{"cna":{"title":"Junos OS: EX4100, EX4400, EX4600, QFX5000 Series: A high rate of specific ICMP traffic will cause the PFE to hang","descriptions":[{"lang":"en","value":"\nAn Improper Validation of Syntactic Correctness of Input vulnerability in the Packet Forwarding Engine (PFE) of Juniper Networks Junos OS allows a network-based, unauthenticated attacker to cause a Denial of Service (DoS).\n\nIf an attacker sends high rate of specific ICMP traffic to a device with VXLAN configured, this causes a deadlock of the PFE and results in the device becoming unresponsive. A manual restart will be required to recover the device.\n\nThis issue only affects EX4100, EX4400, EX4600, QFX5000 Series devices.\n\nThis issue affects:\n\nJuniper Networks Junos OS\n\n\n\n  *  21.4R3 versions earlier than 21.4R3-S4;\n  *  22.1R3 versions earlier than 22.1R3-S3;\n  *  22.2R2 versions earlier than 22.2R3-S1;\n  *  22.3 versions earlier than 22.3R2-S2, 22.3R3;\n  *  22.4 versions earlier than 22.4R2;\n  *  23.1 versions earlier than 23.1R2.\n\n\n\n\n\n\n"}],"affected":[{"vendor":"Juniper Networks","product":"Junos OS","defaultStatus":"unaffected","versions":[{"version":"21.4R3","status":"affected","lessThan":"21.4R3-S4","versionType":"semver"},{"version":"22.1R3","status":"affected","lessThan":"22.1R3-S3","versionType":"semver"},{"version":"22.2R2","status":"affected","lessThan":"22.2R3-S1","versionType":"semver"},{"version":"22.3","status":"affected","lessThan":"22.3R2-S2, 22.3R3","versionType":"semver"},{"version":"22.4","status":"affected","lessThan":"22.4R2","versionType":"semver"},{"version":"23.1","status":"affected","lessThan":"23.1R2","versionType":"semver"}],"platforms":["EX4100","EX4400","EX4600","QFX5000 Series"]}],"references":[{"url":"https://advisory.juniper.net/JSA75734","tags":["vendor-advisory"]},{"url":"https://www.first.org/cvss/calculator/4.0#CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N","tags":["technical-description"]}],"metrics":[{"cvssV3_1":{"attackComplexity":"LOW","attackVector":"NETWORK","availabilityImpact":"HIGH","baseScore":7.5,"baseSeverity":"HIGH","confidentialityImpact":"NONE","integrityImpact":"NONE","privilegesRequired":"NONE","scope":"UNCHANGED","userInteraction":"NONE","vectorString":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H","version":"3.1"},"format":"CVSS","scenarios":[{"lang":"en","value":"GENERAL"}]}],"problemTypes":[{"descriptions":[{"cweId":"CWE-1286","description":"CWE-1286 Improper Validation of Syntactic Correctness of Input","lang":"en","type":"CWE"}]},{"descriptions":[{"description":"Denial of Service (DoS)","lang":"en"}]}],"providerMetadata":{"shortName":"juniper","orgId":"8cbe9d5a-a066-4c94-8978-4b15efeae968","dateUpdated":"2024-01-12T00:52:35.433Z"},"configurations":[{"lang":"en","supportingMedia":[{"base64":false,"type":"text/html","value":"<p>To be exposed to this issue the device needs be configured for VXLAN with either of the following statements:</p><code>  [ vlans &lt;vlan&gt; vxlan ]</code><br/><code>  [ routing-instances &lt;routing-instance&gt; vxlan ]</code><br/>"}],"value":"To be exposed to this issue the device needs be configured for VXLAN with either of the following statements:\n\n  [ vlans <vlan> vxlan ]\n  [ routing-instances <routing-instance> vxlan ]\n"}],"datePublic":"2024-01-10T17:00:00.000Z","exploits":[{"lang":"en","supportingMedia":[{"base64":false,"type":"text/html","value":"<p>Juniper SIRT is not aware of any malicious exploitation of this vulnerability.</p>"}],"value":"Juniper SIRT is not aware of any malicious exploitation of this vulnerability.\n\n"}],"solutions":[{"lang":"en","supportingMedia":[{"base64":false,"type":"text/html","value":"<p>The following software releases have been updated to resolve this specific issue: Junos OS 21.4R3-S4, 22.1R3-S3, 22.2R3-S1, 22.3R2-S2, 22.3R3, 22.4R2, 23.1R2, 23.2R1, and all subsequent releases.</p>"}],"value":"The following software releases have been updated to resolve this specific issue: Junos OS 21.4R3-S4, 22.1R3-S3, 22.2R3-S1, 22.3R2-S2, 22.3R3, 22.4R2, 23.1R2, 23.2R1, and all subsequent releases.\n\n"}],"source":{"advisory":"JSA75734","defect":["1719542"],"discovery":"USER"},"timeline":[{"lang":"en","time":"2024-01-10T17:00:00.000Z","value":"Initial Publication"}],"workarounds":[{"lang":"en","supportingMedia":[{"base64":false,"type":"text/html","value":"<p>There are no known workarounds for this issue.</p>"}],"value":"There are no known workarounds for this issue.\n\n"}],"x_generator":{"engine":"Vulnogram 0.1.0-av217"}},"adp":[{"title":"CVE Program Container","references":[{"url":"https://advisory.juniper.net/JSA75734","tags":["vendor-advisory","x_transferred"]},{"url":"https://www.first.org/cvss/calculator/4.0#CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N","tags":["technical-description","x_transferred"]}],"providerMetadata":{"shortName":"CVE","orgId":"af854a3a-2127-422b-91ae-364da2661108","dateUpdated":"2024-08-01T22:27:34.822Z"}},{"title":"CISA ADP Vulnrichment","affected":[{"vendor":"juniper","product":"junos","defaultStatus":"unknown","versions":[{"version":"21.4R3","status":"affected","lessThan":"21.4R3-S4","versionType":"semver"},{"version":"22.1R3","status":"affected","lessThan":"22.1R3-S3","versionType":"semver"},{"version":"22.2R2","status":"affected","lessThan":"22.2R3-S1","versionType":"semver"},{"version":"22.3","status":"affected","lessThan":"22.3R2-S2","versionType":"semver"},{"version":"22.3","status":"affected","lessThan":"22.3R3","versionType":"semver"},{"version":"22.4","status":"affected","lessThan":"22.4R2","versionType":"semver"},{"version":"23.1","status":"affected","lessThan":"23.1R2","versionType":"semver"}],"cpes":["cpe:2.3:o:juniper:junos:*:*:*:*:*:*:*:*"]}],"metrics":[{"other":{"type":"ssvc","content":{"timestamp":"2024-03-25T18:46:03.901666Z","id":"CVE-2024-21595","options":[{"Exploitation":"none"},{"Automatable":"yes"},{"Technical Impact":"partial"}],"role":"CISA Coordinator","version":"2.0.3"}}}],"providerMetadata":{"shortName":"CISA-ADP","orgId":"134c704f-9b21-4f2e-91b3-4a467353bcc0","dateUpdated":"2024-09-03T18:13:05.922Z"}}]}}}