{"dataType":"CVE_RECORD","dataVersion":"5.1","cveMetadata":{"cveId":"CVE-2025-21597","assignerOrgId":"8cbe9d5a-a066-4c94-8978-4b15efeae968","state":"PUBLISHED","assignerShortName":"juniper","dateReserved":"2024-12-26T14:47:11.669Z","datePublished":"2025-04-09T19:50:57.792Z","dateUpdated":"2025-04-10T13:12:47.198Z"},"containers":{"cna":{"affected":[{"defaultStatus":"unaffected","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-S4","status":"affected","version":"21.4","versionType":"semver"},{"lessThan":"22.1R3-S3","status":"affected","version":"22.1","versionType":"semver"},{"lessThan":"22.2R3-S1","status":"affected","version":"22.2","versionType":"semver"},{"lessThan":"22.3R3","status":"affected","version":"22.3","versionType":"semver"},{"lessThan":"22.4R3","status":"affected","version":"22.4","versionType":"semver"}]},{"defaultStatus":"unaffected","product":"Junos OS Evolved","vendor":"Juniper Networks","versions":[{"lessThan":"21.2R3-S6-EVO","status":"affected","version":"0","versionType":"semver"},{"lessThan":"21.3R3-S5-EVO","status":"affected","version":"21.3-EVO","versionType":"semver"},{"lessThan":"21.4R3-S4-EVO","status":"affected","version":"21.4-EVO","versionType":"semver"},{"lessThan":"22.1R3-S3-EVO","status":"affected","version":"22.1-EVO","versionType":"semver"},{"lessThan":"22.2R3-S1-EVO","status":"affected","version":"22.2-EVO","versionType":"semver"},{"lessThan":"22.3R3-EVO","status":"affected","version":"22.3-EVO","versionType":"semver"},{"lessThan":"22.4R3-EVO","status":"affected","version":"22.4-EVO","versionType":"semver"}]}],"configurations":[{"lang":"en","supportingMedia":[{"base64":false,"type":"text/html","value":"For this issue to occur, BGP rib-sharding and update-threading needs to be configured:

[system processes routing bgp rib-sharding]
[system processes routing bgp update-threading]"}],"value":"For this issue to occur, BGP rib-sharding and update-threading needs to be configured:\n\n[system processes routing bgp rib-sharding]\n[system processes routing bgp update-threading]"}],"datePublic":"2025-04-09T16:00:00.000Z","descriptions":[{"lang":"en","supportingMedia":[{"base64":false,"type":"text/html","value":"An Improper Check for Unusual or Exceptional Conditions vulnerability in routing protocol daemon (rpd) of Juniper Networks Junos OS and Junos OS Evolved allows an unauthenticated, logically adjacent BGP peer to cause Denial of Service (DoS).

On all Junos OS and Junos OS Evolved platforms, when BGP rib-sharding and update-threading are configured, and a BGP peer flap is done with specific timing, rpd crashes and restarts. Continuous peer flapping at specific time intervals will result in a sustained Denial of Service (DoS) condition.

This issue affects eBGP and iBGP, in both IPv4 and IPv6 implementations. This issue requires a remote attacker to have at least one established BGP session. The issue can occur with or without logical-systems enabled.

This issue affects:

Junos OS:

Junos OS Evolved:

"}],"value":"An Improper Check for Unusual or Exceptional Conditions vulnerability in routing protocol daemon (rpd) of Juniper Networks Junos OS and Junos OS Evolved allows an unauthenticated, logically adjacent BGP peer to cause Denial of Service (DoS).\n\nOn all Junos OS and Junos OS Evolved platforms, when BGP rib-sharding and update-threading are configured, and a BGP peer flap is done with specific timing, rpd crashes and restarts. Continuous peer flapping at specific time intervals will result in a sustained Denial of Service (DoS) condition.\n\nThis issue affects eBGP and iBGP, in both IPv4 and IPv6 implementations. This issue requires a remote attacker to have at least one established BGP session. The issue can occur with or without logical-systems enabled.\n\nThis issue affects:\nJunos OS:\n\n\n\n * All versions before 20.4R3-S8,\n * 21.2 versions before 21.2R3-S6,\n\n * 21.3 versions before 21.3R3-S5,\n * 21.4 versions before 21.4R3-S4,\n * 22.1 versions before 22.1R3-S3,\n * 22.2 versions before 22.2R3-S1,\n * 22.3 versions before 22.3R3,\n * 22.4 versions before 22.4R3.\n\n\nJunos OS Evolved:\n\n\n\n * All versions before 21.2R3-S6-EVO,\n * 21.3-EVO versions before 21.3R3-S5-EVO,\n * 21.4-EVO versions before 21.4R3-S4-EVO,\n * 22.1-EVO versions before 22.1R3-S3-EVO,\n * 22.2-EVO versions before :22.2R3-S1-EVO,\n * 22.3-EVO versions before 22.3R3-EVO,\n * 22.4-EVO versions before 22.4R3-EVO."}],"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."}],"metrics":[{"cvssV3_1":{"attackComplexity":"HIGH","attackVector":"ADJACENT_NETWORK","availabilityImpact":"HIGH","baseScore":5.3,"baseSeverity":"MEDIUM","confidentialityImpact":"NONE","integrityImpact":"NONE","privilegesRequired":"NONE","scope":"UNCHANGED","userInteraction":"NONE","vectorString":"CVSS:3.1/AV:A/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:H","version":"3.1"},"format":"CVSS","scenarios":[{"lang":"en","value":"GENERAL"}]},{"cvssV4_0":{"Automatable":"NOT_DEFINED","Recovery":"AUTOMATIC","Safety":"NOT_DEFINED","attackComplexity":"LOW","attackRequirements":"PRESENT","attackVector":"ADJACENT","baseScore":6,"baseSeverity":"MEDIUM","privilegesRequired":"NONE","providerUrgency":"NOT_DEFINED","subAvailabilityImpact":"LOW","subConfidentialityImpact":"NONE","subIntegrityImpact":"NONE","userInteraction":"NONE","valueDensity":"NOT_DEFINED","vectorString":"CVSS:4.0/AV:A/AC:L/AT:P/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:L/R:A","version":"4.0","vulnAvailabilityImpact":"HIGH","vulnConfidentialityImpact":"NONE","vulnIntegrityImpact":"NONE","vulnerabilityResponseEffort":"NOT_DEFINED"},"format":"CVSS","scenarios":[{"lang":"en","value":"GENERAL"}]}],"problemTypes":[{"descriptions":[{"cweId":"CWE-754","description":"CWE-754 Improper Check for Unusual or Exceptional Conditions","lang":"en","type":"CWE"}]}],"providerMetadata":{"orgId":"8cbe9d5a-a066-4c94-8978-4b15efeae968","shortName":"juniper","dateUpdated":"2025-04-09T19:50:57.792Z"},"references":[{"tags":["vendor-advisory"],"url":"https://kb.juniper.net/JSA96451"}],"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-S4, 22.1R3-S3, 22.2R3-S1, 22.3R3, 22.4R3, 23.2R1, and all subsequent releases.

Junos OS Evolved: 21.2R3-S6-EVO, 21.3R3-S5-EVO, 21.4R3-S4-EVO, 22.1R3-S3-EVO, 22.2R3-S1-EVO, 22.3R3-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: 20.4R3-S8, 21.2R3-S6, 21.3R3-S5, 21.4R3-S4, 22.1R3-S3, 22.2R3-S1, 22.3R3, 22.4R3, 23.2R1, and all subsequent releases.\n\nJunos OS Evolved: 21.2R3-S6-EVO, 21.3R3-S5-EVO, 21.4R3-S4-EVO, 22.1R3-S3-EVO, 22.2R3-S1-EVO, 22.3R3-EVO, 22.4R3-EVO, 23.2R1-EVO, and all subsequent releases."}],"source":{"advisory":"JSA96451","defect":["1732833"],"discovery":"USER"},"timeline":[{"lang":"en","time":"2024-04-09T16:00:00.000Z","value":"Initial Publication"}],"title":"Junos OS and Junos OS Evolved: When BGP rib-sharding and update-threading are configured and a peer flaps, an rpd core is observed","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."}],"x_generator":{"engine":"Vulnogram 0.1.0-av217"}},"adp":[{"metrics":[{"other":{"type":"ssvc","content":{"timestamp":"2025-04-10T13:12:39.304791Z","id":"CVE-2025-21597","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":"2025-04-10T13:12:47.198Z"}}]}}