{"dataType":"CVE_RECORD","dataVersion":"5.1","cveMetadata":{"cveId":"CVE-2024-21612","assignerOrgId":"8cbe9d5a-a066-4c94-8978-4b15efeae968","state":"PUBLISHED","assignerShortName":"juniper","dateReserved":"2023-12-27T19:38:25.709Z","datePublished":"2024-01-12T00:55:37.059Z","dateUpdated":"2025-06-17T21:09:20.546Z"},"containers":{"cna":{"affected":[{"defaultStatus":"unaffected","product":"Junos OS Evolved","vendor":"Juniper Networks","versions":[{"lessThan":"21.2R3-S7-EVO","status":"affected","version":"0","versionType":"semver"},{"lessThan":"21.3R3-S5-EVO ","status":"affected","version":"21.3","versionType":"semver"},{"lessThan":"21.4R3-S5-EVO","status":"affected","version":"21.4","versionType":"semver"},{"lessThan":"22.1R3-S4-EVO","status":"affected","version":"22.1","versionType":"semver"},{"lessThan":"22.2R3-S3-EVO ","status":"affected","version":"22.2","versionType":"semver"},{"lessThan":"22.3R3-EVO","status":"affected","version":"22.3","versionType":"semver"},{"lessThan":"22.4R2-EVO, 22.4R3-EVO","status":"affected","version":"22.4","versionType":"semver"}]}],"configurations":[{"lang":"en","supportingMedia":[{"base64":false,"type":"text/html","value":"\n\n

To be affected by this issue, OFP needs to be enabled. Execute the following command to check if OFP is running and on which ports.

[ show system connections | match ofp | match LISTEN ]
\n\n
"}],"value":"\nTo be affected by this issue, OFP needs to be enabled. Execute the following command to check if OFP is running and on which ports.\n\n[ show system connections | match ofp | match LISTEN ]\n\n\n\n"}],"datePublic":"2024-01-10T17:00:00.000Z","descriptions":[{"lang":"en","supportingMedia":[{"base64":false,"type":"text/html","value":"\n\n

\n\n

An Improper Handling of Syntactically Invalid Structure vulnerability in Object Flooding Protocol (OFP) service of Juniper Networks Junos OS Evolved allows an unauthenticated, network-based attacker to cause a Denial of Service (DoS).

On all Junos OS Evolved platforms, when specific TCP packets are received on an open OFP port, the OFP crashes leading to a restart of Routine Engine (RE). Continuous receipt of these specific TCP packets will lead to a sustained Denial of Service (DoS) condition.

\n\n

This issue affects:

Juniper Networks Junos OS Evolved

\n\n"}],"value":"\n\n\n\n\nAn Improper Handling of Syntactically Invalid Structure vulnerability in Object Flooding Protocol (OFP) service of Juniper Networks Junos OS Evolved allows an unauthenticated, network-based attacker to cause a Denial of Service (DoS).\n\nOn all Junos OS Evolved platforms, when specific TCP packets are received on an open OFP port, the OFP crashes leading to a restart of Routine Engine (RE). Continuous receipt of these specific TCP packets will lead to a sustained Denial of Service (DoS) condition.\n\n\n\n\n\nThis issue affects:\n\nJuniper Networks Junos OS Evolved\n\n\n\n * All versions earlier than 21.2R3-S7-EVO;\n * 21.3 versions earlier than 21.3R3-S5-EVO ;\n * 21.4 versions earlier than 21.4R3-S5-EVO;\n * 22.1 versions earlier than 22.1R3-S4-EVO;\n * 22.2 versions earlier than 22.2R3-S3-EVO ;\n * 22.3 versions earlier than 22.3R3-EVO;\n * 22.4 versions earlier than 22.4R2-EVO, 22.4R3-EVO.\n\n\n\n\n\n\n"}],"exploits":[{"lang":"en","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.\n\n"}],"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-228","description":"CWE-228: Improper Handling of Syntactically Invalid Structure","lang":"en","type":"CWE"}]},{"descriptions":[{"description":"Denial of Service (DoS)","lang":"en"}]}],"providerMetadata":{"orgId":"8cbe9d5a-a066-4c94-8978-4b15efeae968","shortName":"juniper","dateUpdated":"2024-01-29T15:28:06.536Z"},"references":[{"tags":["vendor-advisory"],"url":"https://supportportal.juniper.net/JSA75753"},{"tags":["technical-description"],"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"}],"solutions":[{"lang":"en","supportingMedia":[{"base64":false,"type":"text/html","value":"

The following software releases have been updated to resolve this specific issue:

Junos OS Evolved: 21.2R3-S7-EVO, 21.3R3-S5-EVO, 21.4R3-S5-EVO, 22.1R3-S4-EVO, 22.2R3-S3-EVO, 22.3R3-EVO, 22.4R2-EVO, 22.4R3-EVO, 23.2R1-EVO, and all subsequent releases.

"}],"value":"The following software releases have been updated to resolve this specific issue:\n\nJunos OS Evolved: 21.2R3-S7-EVO, 21.3R3-S5-EVO, 21.4R3-S5-EVO, 22.1R3-S4-EVO, 22.2R3-S3-EVO, 22.3R3-EVO, 22.4R2-EVO, 22.4R3-EVO, 23.2R1-EVO, and all subsequent releases.\n\n"}],"source":{"advisory":"JSA75753","defect":["1714333"],"discovery":"USER"},"timeline":[{"lang":"en","time":"2024-01-10T17:00:00.000Z","value":"Initial Publication"},{"lang":"en","time":"2024-01-26T17:00:00.000Z","value":"Added required configuration"}],"title":"Junos OS Evolved: Specific TCP traffic causes OFP core and restart of RE","workarounds":[{"lang":"en","supportingMedia":[{"base64":false,"type":"text/html","value":"\n\n

In order to prevent this issue, following firewall filter needs to be added for each OFP port.

[ firewall family inet filter mgmt-filter term discard_ofp from protocol tcp ]
[ firewall family inet filter mgmt-filter term discard_ofp from destination-port <ofp_port_1> ]
[ firewall family inet filter mgmt-filter term discard_ofp from destination-port <ofp_port_2> ]
[ firewall family inet filter mgmt-filter term discard_ofp then discard ]
[ firewall family inet filter mgmt-filter term 2 then accept ]

[ interfaces re0:mgmt-0 unit 0 family inet filter input mgmt-filter ]
[ interfaces re1:mgmt-0 unit 0 family inet filter input mgmt-filter ]
\n\n"}],"value":"\nIn order to prevent this issue, following firewall filter needs to be added for each OFP port.\n\n[ firewall family inet filter mgmt-filter term discard_ofp from protocol tcp ]\n[ firewall family inet filter mgmt-filter term discard_ofp from destination-port ]\n[ firewall family inet filter mgmt-filter term discard_ofp from destination-port ]\n[ firewall family inet filter mgmt-filter term discard_ofp then discard ]\n[ firewall family inet filter mgmt-filter term 2 then accept ]\n\n[ interfaces re0:mgmt-0 unit 0 family inet filter input mgmt-filter ]\n[ interfaces re1:mgmt-0 unit 0 family inet filter input mgmt-filter ]\n\n\n"}],"x_generator":{"engine":"Vulnogram 0.1.0-av217"}},"adp":[{"providerMetadata":{"orgId":"af854a3a-2127-422b-91ae-364da2661108","shortName":"CVE","dateUpdated":"2024-08-01T22:27:36.014Z"},"title":"CVE Program Container","references":[{"tags":["vendor-advisory","x_transferred"],"url":"https://supportportal.juniper.net/JSA75753"},{"tags":["technical-description","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"}]},{"metrics":[{"other":{"type":"ssvc","content":{"id":"CVE-2024-21612","role":"CISA Coordinator","options":[{"Exploitation":"none"},{"Automatable":"yes"},{"Technical Impact":"partial"}],"version":"2.0.3","timestamp":"2024-01-12T15:44:31.372599Z"}}}],"title":"CISA ADP Vulnrichment","providerMetadata":{"orgId":"134c704f-9b21-4f2e-91b3-4a467353bcc0","shortName":"CISA-ADP","dateUpdated":"2025-06-17T21:09:20.546Z"}}]}}