{"id":"CVE-2024-21594","state":"PUBLISHED","title":"Junos OS: SRX 5000 Series: Repeated execution of a specific CLI command causes a flowd crash","description":"\nA Heap-based Buffer Overflow vulnerability in the Network Services Daemon (NSD) of Juniper Networks Junos OS allows authenticated, low privileged, local attacker to cause a Denial of Service (DoS).\n\nOn an SRX 5000 Series device, when executing a specific command repeatedly, memory is corrupted, which leads to a Flow Processing Daemon (flowd) crash.\n\nThe NSD process has to be restarted to restore services.\n\nIf this issue occurs, it can be checked with the following command:\n\nuser@host> request security policies check\nThe following log message can also be observed:\n\nError: policies are out of sync for PFE node<number>.fpc<number>.pic<number>.\nThis issue affects:\n\nJuniper Networks Junos OS on SRX 5000 Series\n\n\n\n  *  All versions earlier than 20.4R3-S6;\n  *  21.1 versions earlier than 21.1R3-S5;\n  *  21.2 versions earlier than 21.2R3-S4;\n  *  21.3 versions earlier than 21.3R3-S3;\n  *  21.4 versions earlier than 21.4R3-S3;\n  *  22.1 versions earlier than 22.1R3-S1;\n  *  22.2 versions earlier than 22.2R3;\n  *  22.3 versions earlier than 22.3R2.\n\n\n\n\n\n\n","publishedAt":"2024-01-12T00:52:18.218Z","updatedAt":"2025-06-03T14:05:53.514Z","severity":{"score":5.5,"label":"Medium","version":"3.1","vector":"CVSS:3.1/AV:L/AC:L/PR:L/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":"0","status":"affected","lessThan":"20.4R3-S6","versionType":"semver"},{"version":"21.1","status":"affected","lessThan":"21.1R3-S5","versionType":"semver"},{"version":"21.2","status":"affected","lessThan":"21.2R3-S4","versionType":"semver"},{"version":"21.3","status":"affected","lessThan":"21.3R3-S3","versionType":"semver"},{"version":"21.4","status":"affected","lessThan":"21.4R3-S3","versionType":"semver"},{"version":"22.1","status":"affected","lessThan":"22.1R3-S1","versionType":"semver"},{"version":"22.2","status":"affected","lessThan":"22.2R3","versionType":"semver"},{"version":"22.3","status":"affected","lessThan":"22.3R2","versionType":"semver"}],"platforms":["SRX 5000 Series"]}],"references":["https://supportportal.juniper.net/JSA75733","https://www.first.org/cvss/calculator/4.0#CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N"],"weaknesses":["CWE-122"],"ingestedAt":"2026-10-29T20:06:59.846Z","source":{"repository":"CVEProject/cvelistV5","path":"cves/2024/21xxx/CVE-2024-21594.json","commit":"556c9d3a8cd17e218bb8e452ba7cd619a384ff47"},"raw":{"dataType":"CVE_RECORD","dataVersion":"5.1","cveMetadata":{"cveId":"CVE-2024-21594","state":"PUBLISHED","datePublished":"2024-01-12T00:52:18.218Z","dateUpdated":"2025-06-03T14:05:53.514Z","assignerShortName":"juniper","assignerOrgId":"8cbe9d5a-a066-4c94-8978-4b15efeae968","dateReserved":"2023-12-27T19:38:25.704Z"},"containers":{"cna":{"title":"Junos OS: SRX 5000 Series: Repeated execution of a specific CLI command causes a flowd crash","descriptions":[{"lang":"en","value":"\nA Heap-based Buffer Overflow vulnerability in the Network Services Daemon (NSD) of Juniper Networks Junos OS allows authenticated, low privileged, local attacker to cause a Denial of Service (DoS).\n\nOn an SRX 5000 Series device, when executing a specific command repeatedly, memory is corrupted, which leads to a Flow Processing Daemon (flowd) crash.\n\nThe NSD process has to be restarted to restore services.\n\nIf this issue occurs, it can be checked with the following command:\n\nuser@host> request security policies check\nThe following log message can also be observed:\n\nError: policies are out of sync for PFE node<number>.fpc<number>.pic<number>.\nThis issue affects:\n\nJuniper Networks Junos OS on SRX 5000 Series\n\n\n\n  *  All versions earlier than 20.4R3-S6;\n  *  21.1 versions earlier than 21.1R3-S5;\n  *  21.2 versions earlier than 21.2R3-S4;\n  *  21.3 versions earlier than 21.3R3-S3;\n  *  21.4 versions earlier than 21.4R3-S3;\n  *  22.1 versions earlier than 22.1R3-S1;\n  *  22.2 versions earlier than 22.2R3;\n  *  22.3 versions earlier than 22.3R2.\n\n\n\n\n\n\n"}],"affected":[{"vendor":"Juniper Networks","product":"Junos OS","defaultStatus":"unaffected","versions":[{"version":"0","status":"affected","lessThan":"20.4R3-S6","versionType":"semver"},{"version":"21.1","status":"affected","lessThan":"21.1R3-S5","versionType":"semver"},{"version":"21.2","status":"affected","lessThan":"21.2R3-S4","versionType":"semver"},{"version":"21.3","status":"affected","lessThan":"21.3R3-S3","versionType":"semver"},{"version":"21.4","status":"affected","lessThan":"21.4R3-S3","versionType":"semver"},{"version":"22.1","status":"affected","lessThan":"22.1R3-S1","versionType":"semver"},{"version":"22.2","status":"affected","lessThan":"22.2R3","versionType":"semver"},{"version":"22.3","status":"affected","lessThan":"22.3R2","versionType":"semver"}],"platforms":["SRX 5000 Series"]}],"references":[{"url":"https://supportportal.juniper.net/JSA75733","tags":["vendor-advisory"]},{"url":"https://www.first.org/cvss/calculator/4.0#CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N","tags":["technical-description"]}],"metrics":[{"cvssV3_1":{"attackComplexity":"LOW","attackVector":"LOCAL","availabilityImpact":"HIGH","baseScore":5.5,"baseSeverity":"MEDIUM","confidentialityImpact":"NONE","integrityImpact":"NONE","privilegesRequired":"LOW","scope":"UNCHANGED","userInteraction":"NONE","vectorString":"CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H","version":"3.1"},"format":"CVSS","scenarios":[{"lang":"en","value":"GENERAL"}]}],"problemTypes":[{"descriptions":[{"cweId":"CWE-122","description":"CWE-122 Heap-based Buffer Overflow","lang":"en","type":"CWE"}]},{"descriptions":[{"description":"Denial of Service (DoS)","lang":"en"}]}],"providerMetadata":{"shortName":"juniper","orgId":"8cbe9d5a-a066-4c94-8978-4b15efeae968","dateUpdated":"2024-01-12T00:52:18.218Z"},"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 20.4R3-S6, 21.1R3-S5, 21.2R3-S4, 21.3R3-S3, 21.3R3-S4, 21.4R3-S3, 22.1R3-S1, 22.2R3, 22.3R2, 22.4R1, 22.4R2, 23.1R1, and all subsequent releases.</p>"}],"value":"The following software releases have been updated to resolve this specific issue: Junos OS 20.4R3-S6, 21.1R3-S5, 21.2R3-S4, 21.3R3-S3, 21.3R3-S4, 21.4R3-S3, 22.1R3-S1, 22.2R3, 22.3R2, 22.4R1, 22.4R2, 23.1R1, and all subsequent releases.\n\n"}],"source":{"advisory":"JSA75733","defect":["1694960"],"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://supportportal.juniper.net/JSA75733","tags":["vendor-advisory","x_transferred"]},{"url":"https://www.first.org/cvss/calculator/4.0#CVSS:4.0/AV:L/AC:L/AT:N/PR:L/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":"2024-08-01T22:27:35.525Z"}},{"title":"CISA ADP Vulnrichment","metrics":[{"other":{"type":"ssvc","content":{"timestamp":"2025-05-08T19:10:09.629862Z","id":"CVE-2024-21594","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":"2025-06-03T14:05:53.514Z"}}]}}}