{"dataType":"CVE_RECORD","dataVersion":"5.1","cveMetadata":{"cveId":"CVE-2024-21606","assignerOrgId":"8cbe9d5a-a066-4c94-8978-4b15efeae968","state":"PUBLISHED","assignerShortName":"juniper","dateReserved":"2023-12-27T19:38:25.707Z","datePublished":"2024-01-12T00:54:51.832Z","dateUpdated":"2025-06-17T21:09:19.784Z"},"containers":{"cna":{"affected":[{"defaultStatus":"unaffected","platforms":["SRX Series"],"product":"Junos OS","vendor":"Juniper Networks","versions":[{"lessThan":"20.4R3-S8","status":"affected","version":"0","versionType":"semver"},{"lessThan":"21.2R3-S6","status":"affected","version":"21.2","versionType":"semver"},{"lessThan":"21.3R3-S5","status":"affected","version":"21.3","versionType":"semver"},{"lessThan":"21.4R3-S5","status":"affected","version":"21.4","versionType":"semver"},{"lessThan":"22.1R3-S3","status":"affected","version":"22.1","versionType":"semver"},{"lessThan":"22.2R3-S3","status":"affected","version":"22.2","versionType":"semver"},{"lessThan":"22.3R3-S1","status":"affected","version":"22.3","versionType":"semver"},{"lessThan":"22.4R2-S2, 22.4R3","status":"affected","version":"22.4","versionType":"semver"}]}],"configurations":[{"lang":"en","supportingMedia":[{"base64":false,"type":"text/html","value":"

To be exposed to this issue the following configuration needs to be present:

[security ike gateway <gateway-name> tcp-encap-profile <profile-name> ]
"}],"value":"To be exposed to this issue the following configuration needs to be present:\n\n [security ike gateway tcp-encap-profile ]\n"}],"datePublic":"2024-01-10T17:00:00.000Z","descriptions":[{"lang":"en","supportingMedia":[{"base64":false,"type":"text/html","value":"\n\n

A Double Free vulnerability in the flow processing daemon (flowd) of Juniper Networks Junos OS on SRX Series allows a network-based, unauthenticated attacker to cause a Denial of Service (DoS).

In a remote access VPN scenario, if a \"tcp-encap-profile\" is configured and a sequence of specific packets is received, a flowd crash and restart will be observed.

This issue affects Juniper Networks Junos OS on SRX Series:

\n\n"}],"value":"\nA Double Free vulnerability in the flow processing daemon (flowd) of Juniper Networks Junos OS on SRX Series allows a network-based, unauthenticated attacker to cause a Denial of Service (DoS).\n\nIn a remote access VPN scenario, if a \"tcp-encap-profile\" is configured and a sequence of specific packets is received, a flowd crash and restart will be observed.\n\nThis issue affects Juniper Networks Junos OS on SRX Series:\n\n\n\n * All versions earlier than 20.4R3-S8;\n * 21.2 versions earlier than 21.2R3-S6;\n * 21.3 versions earlier than 21.3R3-S5;\n * 21.4 versions earlier than 21.4R3-S5;\n * 22.1 versions earlier than 22.1R3-S3;\n * 22.2 versions earlier than 22.2R3-S3;\n * 22.3 versions earlier than 22.3R3-S1;\n * 22.4 versions earlier than 22.4R2-S2, 22.4R3.\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-415","description":"CWE-415 Double Free","lang":"en","type":"CWE"}]},{"descriptions":[{"description":"Denial of Service (DoS)","lang":"en"}]}],"providerMetadata":{"orgId":"8cbe9d5a-a066-4c94-8978-4b15efeae968","shortName":"juniper","dateUpdated":"2024-01-12T00:54:51.832Z"},"references":[{"tags":["vendor-advisory"],"url":"https://supportportal.juniper.net/JSA75747"},{"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:H"}],"solutions":[{"lang":"en","supportingMedia":[{"base64":false,"type":"text/html","value":"

The following software releases have been updated to resolve this specific issue: Junos OS 20.4R3-S8, 21.2R3-S6, 21.3R3-S5, 21.4R3-S5, 22.1R3-S3, 22.2R3-S3, 22.3R3-S1, 22.4R2-S2, 22.4R3, 23.2R1, and all subsequent releases.

"}],"value":"The following software releases have been updated to resolve this specific issue: Junos OS 20.4R3-S8, 21.2R3-S6, 21.3R3-S5, 21.4R3-S5, 22.1R3-S3, 22.2R3-S3, 22.3R3-S1, 22.4R2-S2, 22.4R3, 23.2R1, and all subsequent releases.\n\n"}],"source":{"advisory":"JSA75747","defect":["1721936"],"discovery":"USER"},"timeline":[{"lang":"en","time":"2024-01-10T17:00:00.000Z","value":"Initial Publication"}],"title":"Junos OS: SRX Series: When \"tcp-encap\" is configured and specific packets are received flowd will crash","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.\n\n"}],"x_generator":{"engine":"Vulnogram 0.1.0-av217"}},"adp":[{"providerMetadata":{"orgId":"af854a3a-2127-422b-91ae-364da2661108","shortName":"CVE","dateUpdated":"2024-08-01T22:27:35.875Z"},"title":"CVE Program Container","references":[{"tags":["vendor-advisory","x_transferred"],"url":"https://supportportal.juniper.net/JSA75747"},{"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:H"}]},{"metrics":[{"other":{"type":"ssvc","content":{"id":"CVE-2024-21606","role":"CISA Coordinator","options":[{"Exploitation":"none"},{"Automatable":"yes"},{"Technical Impact":"partial"}],"version":"2.0.3","timestamp":"2024-01-12T15:48:53.618395Z"}}}],"title":"CISA ADP Vulnrichment","providerMetadata":{"orgId":"134c704f-9b21-4f2e-91b3-4a467353bcc0","shortName":"CISA-ADP","dateUpdated":"2025-06-17T21:09:19.784Z"}}]}}