{"dataType":"CVE_RECORD","dataVersion":"5.1","cveMetadata":{"cveId":"CVE-2024-21599","assignerOrgId":"8cbe9d5a-a066-4c94-8978-4b15efeae968","state":"PUBLISHED","assignerShortName":"juniper","dateReserved":"2023-12-27T19:38:25.706Z","datePublished":"2024-01-12T00:53:23.497Z","dateUpdated":"2025-06-16T18:33:32.215Z"},"containers":{"cna":{"affected":[{"defaultStatus":"unaffected","platforms":["MX Series"],"product":"Junos OS","vendor":"Juniper Networks","versions":[{"lessThan":"20.4R3-S3","status":"affected","version":"0","versionType":"semver"},{"lessThan":"21.1R3-S4","status":"affected","version":"21.1","versionType":"semver"},{"lessThan":"21.2R3","status":"affected","version":"21.2","versionType":"semver"},{"lessThan":"21.3R2-S1, 21.3R3","status":"affected","version":"21.3","versionType":"semver"},{"lessThan":"21.4R2","status":"affected","version":"21.4","versionType":"semver"},{"lessThan":"22.1R2","status":"affected","version":"22.1","versionType":"semver"}]}],"configurations":[{"lang":"en","supportingMedia":[{"base64":false,"type":"text/html","value":"

To be affected by this issue an interface on the MPC needs to be configured with PTP as follows:

[ protocols ptp master/slave interface <interface-name> ]
"}],"value":"To be affected by this issue an interface on the MPC needs to be configured with PTP as follows:\n\n [ protocols ptp master/slave interface ]\n"}],"datePublic":"2024-01-10T17:00:00.000Z","descriptions":[{"lang":"en","supportingMedia":[{"base64":false,"type":"text/html","value":"\n\n

A Missing Release of Memory after Effective Lifetime vulnerability in the Packet Forwarding Engine (PFE) of Juniper Networks Junos OS on MX Series allows an adjacent, unauthenticated attacker to cause a Denial of Service (DoS).

If an MX Series device receives PTP packets on an MPC3E that doesn't support PTP this causes a memory leak which will result in unpredictable behavior and ultimately in an MPC crash and restart.

To monitor for this issue, please use the following FPC vty level commands:

show heap

shows an increase in \"LAN buffer\" utilization and

show clksync ptp nbr-upd-info

shows non-zero \"Pending PFEs\" counter.

This issue affects Juniper Networks Junos OS on MX Series with MPC3E:

\n\n"}],"value":"\nA Missing Release of Memory after Effective Lifetime vulnerability in the Packet Forwarding Engine (PFE) of Juniper Networks Junos OS on MX Series allows an adjacent, unauthenticated attacker to cause a Denial of Service (DoS).\n\nIf an MX Series device receives PTP packets on an MPC3E that doesn't support PTP this causes a memory leak which will result in unpredictable behavior and ultimately in an MPC crash and restart.\n\nTo monitor for this issue, please use the following FPC vty level commands:\n\nshow heap\nshows an increase in \"LAN buffer\" utilization and\n\nshow clksync ptp nbr-upd-info\nshows non-zero \"Pending PFEs\" counter.\n\nThis issue affects Juniper Networks Junos OS on MX Series with MPC3E:\n\n\n\n * All versions earlier than 20.4R3-S3;\n * 21.1 versions earlier than 21.1R3-S4;\n * 21.2 versions earlier than 21.2R3;\n * 21.3 versions earlier than 21.3R2-S1, 21.3R3;\n * 21.4 versions earlier than 21.4R2;\n * 22.1 versions earlier than 22.1R2.\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":"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"}]}],"problemTypes":[{"descriptions":[{"cweId":"CWE-401","description":"CWE-401 Missing Release of Memory after Effective Lifetime","lang":"en","type":"CWE"}]},{"descriptions":[{"description":"Denial of Service (DoS)","lang":"en"}]}],"providerMetadata":{"orgId":"8cbe9d5a-a066-4c94-8978-4b15efeae968","shortName":"juniper","dateUpdated":"2024-01-12T00:53:23.497Z"},"references":[{"tags":["vendor-advisory"],"url":"https://supportportal.juniper.net/JSA75740"},{"tags":["technical-description"],"url":"https://www.first.org/cvss/calculator/4.0#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"}],"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-S3, 21.1R3-S4, 21.2R3, 21.3R2-S1, 21.3R3, 21.4R2, 22.1R2, 22.2R1, and all subsequent releases.

"}],"value":"The following software releases have been updated to resolve this specific issue: Junos OS 20.4R3-S3, 21.1R3-S4, 21.2R3, 21.3R2-S1, 21.3R3, 21.4R2, 22.1R2, 22.2R1, and all subsequent releases.\n\n"}],"source":{"advisory":"JSA75740","defect":["1646324"],"discovery":"USER"},"timeline":[{"lang":"en","time":"2024-01-10T17:00:00.000Z","value":"Initial Publication"}],"title":"Junos OS: MX Series: MPC3E memory leak with PTP configuration","workarounds":[{"lang":"en","supportingMedia":[{"base64":false,"type":"text/html","value":"

Although not a workaround the leaked memory can be recovered by: deactivate protocol ptp; commit; activate protocol ptp; commit.

"}],"value":"Although not a workaround the leaked memory can be recovered by: deactivate protocol ptp; commit; activate protocol ptp; commit. \n\n"}],"x_generator":{"engine":"Vulnogram 0.1.0-av217"}},"adp":[{"providerMetadata":{"orgId":"af854a3a-2127-422b-91ae-364da2661108","shortName":"CVE","dateUpdated":"2024-08-01T22:27:35.799Z"},"title":"CVE Program Container","references":[{"tags":["vendor-advisory","x_transferred"],"url":"https://supportportal.juniper.net/JSA75740"},{"tags":["technical-description","x_transferred"],"url":"https://www.first.org/cvss/calculator/4.0#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"}]},{"metrics":[{"other":{"type":"ssvc","content":{"timestamp":"2024-02-12T16:19:40.625633Z","id":"CVE-2024-21599","options":[{"Exploitation":"none"},{"Automatable":"no"},{"Technical Impact":"partial"}],"role":"CISA Coordinator","version":"2.0.3"}}}],"title":"CISA ADP Vulnrichment","providerMetadata":{"orgId":"134c704f-9b21-4f2e-91b3-4a467353bcc0","shortName":"CISA-ADP","dateUpdated":"2025-06-16T18:33:32.215Z"}}]}}