CVE-2025-52955 (GCVE-0-2025-52955)

Vulnerability from cvelistv5 – Published: 2025-07-11 14:42 – Updated: 2025-08-20 18:32
VLAI?
Title
Junos OS and Junos OS Evolved: When jflow/sflow is configured continuous logical interface flaps causes rpd crash and restart
Summary
An Incorrect Calculation of Buffer Size vulnerability in the routing protocol daemon (rpd) of Juniper Networks Junos OS and Junos OS Evolved allows an adjacent unauthenticated attacker to cause a memory corruption that leads to a rpd crash.  When the logical interface using a routing instance flaps continuously, specific updates are sent to the jflow/sflow modules. This results in memory corruption, leading to an rpd crash and restart.  Continued receipt of these specific updates will cause a sustained Denial of Service condition. This issue affects Junos OS: * All versions before 21.2R3-S9, * All versions of 21.4, * All versions of 22.2, * from 22.4 before 22.4R3-S7, * from 23.2 before 23.2R2-S3, * from 23.4 before 23.4R2-S4, * from 24.2 before 24.2R2. Junos OS Evolved:  * All versions of 21.2-EVO,  * All versions of 21.4-EVO,  * All versions of 22.2-EVO,  * from 22.4 before 22.4R3-S7-EVO,  * from 23.2 before 23.2R2-S3-EVO,  * from 23.4 before 23.4R2-S4-EVO,  * from 24.2 before 24.2R2-EVO.
Severity ?
6.5 (Medium)
CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
7.1 (High)
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/R:A/U:Green
CWE
  • CWE-131 - Incorrect Calculation of Buffer Size
Assigner
References
Impacted products
Vendor Product Version
Juniper Networks Junos OS Affected: 0 , < 21.2R3-S9 (semver)
Affected: 21.4 , < 21.4* (semver)
Affected: 22.2 , < 22.2* (semver)
Affected: 22.4 , < 22.4R3-S7 (semver)
Affected: 23.2 , < 23.2R2-S3 (semver)
Affected: 23.4 , < 23.4R2-S4 (semver)
Affected: 24.2 , < 24.2R2 (semver)
Create a notification for this product.
Juniper Networks Junos OS Evolved Affected: 0 , < 21.2*-EVO (semver)
Affected: 21.4 , < 21.4*-EVO (semver)
Affected: 22.2 , < 22.2*-EVO (semver)
Affected: 22.4 , < 22.4R3-S7-EVO (semver)
Affected: 23.2 , < 23.2R2-S3-EVO (semver)
Affected: 23.4 , < 23.4R2-S4-EVO (semver)
Affected: 24.2 , < 24.2R2-EVO (semver)
Create a notification for this product.
Date Public ?
2025-07-09 16:00
Show details on NVD website
To clipboard 

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This results in memory corruption, leading to an rpd crash and restart.\u00a0\\n\\n\\nContinued receipt of these specific updates will cause a sustained Denial of Service condition.\\n\\n\\nThis issue affects Junos OS:\\n\\n  *  All versions before 21.2R3-S9, \\n  *  All versions of 21.4, \\n  *  All versions of 22.2, \\n  *  from 22.4 before 22.4R3-S7, \\n  *  from 23.2 before 23.2R2-S3, \\n  *  from 23.4 before 23.4R2-S4, \\n  *  from 24.2 before 24.2R2.\\n\\n\\nJunos OS Evolved:\u00a0\\n\\n\\n\\n  *  All versions of 21.2-EVO,\u00a0\\n  *  All versions of 21.4-EVO,\u00a0\\n  *  All versions of 22.2-EVO,\u00a0\\n  *  from 22.4 before 22.4R3-S7-EVO,\u00a0\\n  *  from 23.2 before 23.2R2-S3-EVO,\u00a0\\n  *  from 23.4 before 23.4R2-S4-EVO,\u00a0\\n  *  from 24.2 before 24.2R2-EVO.\"},{\"lang\":\"es\",\"value\":\"Una vulnerabilidad de c\u00e1lculo incorrecto del tama\u00f1o del b\u00fafer en el daemon del protocolo de enrutamiento (rpd) de Juniper Networks Junos OS permite que un atacante adyacente no autenticado cause una corrupci\u00f3n de memoria que provoca un bloqueo de rpd. Cuando la interfaz l\u00f3gica que utiliza una instancia de enrutamiento presenta fluctuaciones continuas, se env\u00edan actualizaciones espec\u00edficas a los m\u00f3dulos jflow/sflow. Esto provoca una corrupci\u00f3n de memoria, lo que provoca un bloqueo y reinicio de rpd. La recepci\u00f3n continua de estas actualizaciones espec\u00edficas provocar\u00e1 una denegaci\u00f3n de servicio (DPS) sostenida. Este problema afecta a Junos OS: * Todas las versiones anteriores a 21.2R3-S9, * Todas las versiones de 21.4, * Todas las versiones de 22.2, * De 22.4 a 22.4R3-S7, * De 23.2 a 23.2R2-S3, * De 23.4 a 23.4R2-S4, * De 24.2 a 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Advisory\"]}]}}",
    "vulnrichment": {
      "containers": "{\"adp\": [{\"title\": \"CISA ADP Vulnrichment\", \"metrics\": [{\"other\": {\"type\": \"ssvc\", \"content\": {\"id\": \"CVE-2025-52955\", \"role\": \"CISA Coordinator\", \"options\": [{\"Exploitation\": \"none\"}, {\"Automatable\": \"no\"}, {\"Technical Impact\": \"partial\"}], \"version\": \"2.0.3\", \"timestamp\": \"2025-07-11T20:09:13.568277Z\"}}}], \"providerMetadata\": {\"orgId\": \"134c704f-9b21-4f2e-91b3-4a467353bcc0\", \"shortName\": \"CISA-ADP\", \"dateUpdated\": \"2025-07-11T20:09:18.929Z\"}}], \"cna\": {\"title\": \"Junos OS and Junos OS Evolved: When jflow/sflow is configured continuous logical interface flaps causes rpd crash and restart\", \"source\": {\"defect\": [\"1834075\"], \"advisory\": \"JSA100062\", \"discovery\": \"USER\"}, \"metrics\": [{\"format\": \"CVSS\", \"cvssV3_1\": {\"scope\": \"UNCHANGED\", \"version\": \"3.1\", \"baseScore\": 6.5, \"attackVector\": \"ADJACENT_NETWORK\", \"baseSeverity\": \"MEDIUM\", \"vectorString\": \"CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H\", \"integrityImpact\": \"NONE\", \"userInteraction\": \"NONE\", \"attackComplexity\": \"LOW\", \"availabilityImpact\": \"HIGH\", \"privilegesRequired\": \"NONE\", \"confidentialityImpact\": \"NONE\"}, \"scenarios\": [{\"lang\": \"en\", \"value\": \"GENERAL\"}]}, {\"format\": \"CVSS\", \"cvssV4_0\": {\"Safety\": \"NOT_DEFINED\", \"version\": \"4.0\", \"Recovery\": \"AUTOMATIC\", \"baseScore\": 7.1, \"Automatable\": \"NOT_DEFINED\", \"attackVector\": \"ADJACENT\", \"baseSeverity\": \"HIGH\", \"valueDensity\": \"NOT_DEFINED\", \"vectorString\": \"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/R:A/U:Green\", \"providerUrgency\": \"GREEN\", \"userInteraction\": \"NONE\", \"attackComplexity\": \"LOW\", \"attackRequirements\": \"NONE\", \"privilegesRequired\": \"NONE\", \"subIntegrityImpact\": \"NONE\", \"vulnIntegrityImpact\": \"NONE\", \"subAvailabilityImpact\": \"LOW\", \"vulnAvailabilityImpact\": \"HIGH\", \"subConfidentialityImpact\": \"NONE\", \"vulnConfidentialityImpact\": \"NONE\", \"vulnerabilityResponseEffort\": \"NOT_DEFINED\"}, \"scenarios\": [{\"lang\": \"en\", \"value\": \"GENERAL\"}]}], \"affected\": [{\"vendor\": \"Juniper Networks\", \"product\": \"Junos OS\", \"versions\": [{\"status\": \"affected\", \"version\": \"0\", \"lessThan\": \"21.2R3-S9\", \"versionType\": \"semver\"}, {\"status\": \"affected\", \"version\": \"21.4\", \"lessThan\": \"21.4*\", \"versionType\": \"semver\"}, {\"status\": \"affected\", \"version\": \"22.2\", \"lessThan\": \"22.2*\", \"versionType\": \"semver\"}, {\"status\": \"affected\", \"version\": \"22.4\", \"lessThan\": \"22.4R3-S7\", \"versionType\": \"semver\"}, {\"status\": \"affected\", \"version\": \"23.2\", \"lessThan\": \"23.2R2-S3\", \"versionType\": \"semver\"}, {\"status\": \"affected\", \"version\": \"23.4\", \"lessThan\": \"23.4R2-S4\", \"versionType\": \"semver\"}, {\"status\": \"affected\", \"version\": \"24.2\", \"lessThan\": \"24.2R2\", \"versionType\": \"semver\"}], \"defaultStatus\": \"unaffected\"}, {\"vendor\": \"Juniper Networks\", \"product\": \"Junos OS Evolved\", \"versions\": [{\"status\": \"affected\", \"version\": \"0\", \"lessThan\": \"21.2*-EVO\", \"versionType\": \"semver\"}, {\"status\": \"affected\", \"version\": \"21.4\", \"lessThan\": \"21.4*-EVO\", \"versionType\": \"semver\"}, {\"status\": \"affected\", \"version\": \"22.2\", \"lessThan\": \"22.2*-EVO\", \"versionType\": \"semver\"}, {\"status\": \"affected\", \"version\": \"22.4\", \"lessThan\": \"22.4R3-S7-EVO\", \"versionType\": \"semver\"}, {\"status\": \"affected\", \"version\": \"23.2\", \"lessThan\": \"23.2R2-S3-EVO\", \"versionType\": \"semver\"}, {\"status\": \"affected\", \"version\": \"23.4\", \"lessThan\": \"23.4R2-S4-EVO\", \"versionType\": \"semver\"}, {\"status\": \"affected\", \"version\": \"24.2\", \"lessThan\": \"24.2R2-EVO\", \"versionType\": \"semver\"}], \"defaultStatus\": \"unaffected\"}], \"exploits\": [{\"lang\": \"en\", \"value\": \"Juniper SIRT is not aware of any malicious exploitation of this vulnerability.\", \"supportingMedia\": [{\"type\": \"text/html\", \"value\": \"Juniper SIRT is not aware of any malicious exploitation of this vulnerability.\", \"base64\": false}]}], \"solutions\": [{\"lang\": \"en\", \"value\": \"The following software releases have been updated to resolve this specific issue: \\n\\nJunos OS: 21.2R3-S9, 22.4R3-S7, 23.2R2-S3, 23.4R2-S4, 24.2R2, 24.4R1, and all subsequent releases.\\n\\nJunos OS Evolved: 22.4R3-S7-EVO, 23.2R2-S3-EVO, 23.4R2-S4-EVO, 24.2R2-EVO, 24.4R1-EVO,\\u00a0and all subsequent releases.\", \"supportingMedia\": [{\"type\": \"text/html\", \"value\": \"The following software releases have been updated to resolve this specific issue: \u003cbr\u003e\u003cbr\u003eJunos OS: 21.2R3-S9, 22.4R3-S7, 23.2R2-S3, 23.4R2-S4, 24.2R2, 24.4R1, and all subsequent releases.\u003cbr\u003e\u003cbr\u003e\u003cspan style=\\\"background-color: rgb(255, 255, 255);\\\"\u003eJunos OS Evolved: 22.4R3-S7-EVO, \u003c/span\u003e23.2R2-S3-EVO, 23.4R2-S4-EVO, 24.2R2-EVO, 24.4R1-EVO,\u0026nbsp;and all subsequent releases.\u003cbr\u003e\u003cbr\u003e\", \"base64\": false}]}], \"datePublic\": \"2025-07-09T16:00:00.000Z\", \"references\": [{\"url\": \"https://supportportal.juniper.net/JSA100062\", \"tags\": [\"vendor-advisory\"]}], \"workarounds\": [{\"lang\": \"en\", \"value\": \"Limit CLI access to trusted users shall avoid this situation\", \"supportingMedia\": [{\"type\": \"text/html\", \"value\": \"Limit CLI access to trusted users shall avoid this situation\u003cbr\u003e\u003cbr\u003e\", \"base64\": false}]}], \"x_generator\": {\"engine\": \"Vulnogram 0.1.0-dev\"}, \"descriptions\": [{\"lang\": \"en\", \"value\": \"An Incorrect Calculation of Buffer Size vulnerability in the routing protocol daemon (rpd) of Juniper Networks Junos OS and Junos OS Evolved allows an adjacent unauthenticated attacker to cause a memory corruption that leads\\u00a0to a rpd crash.\\u00a0\\n\\n\\n\\n\\n\\n\\n\\n\\n\\n\\n\\nWhen\\nthe logical interface using a routing instance flaps continuously, specific updates are sent to the jflow/sflow modules. This results in memory corruption, leading to an rpd crash and restart.\\u00a0\\n\\n\\nContinued receipt of these specific updates will cause a sustained Denial of Service condition.\\n\\n\\nThis issue affects Junos OS:\\n\\n  *  All versions before 21.2R3-S9, \\n  *  All versions of 21.4, \\n  *  All versions of 22.2, \\n  *  from 22.4 before 22.4R3-S7, \\n  *  from 23.2 before 23.2R2-S3, \\n  *  from 23.4 before 23.4R2-S4, \\n  *  from 24.2 before 24.2R2.\\n\\n\\nJunos OS Evolved:\\u00a0\\n\\n\\n\\n  *  All versions of 21.2-EVO,\\u00a0\\n  *  All versions of 21.4-EVO,\\u00a0\\n  *  All versions of 22.2-EVO,\\u00a0\\n  *  from 22.4 before 22.4R3-S7-EVO,\\u00a0\\n  *  from 23.2 before 23.2R2-S3-EVO,\\u00a0\\n  *  from 23.4 before 23.4R2-S4-EVO,\\u00a0\\n  *  from 24.2 before 24.2R2-EVO.\", \"supportingMedia\": [{\"type\": \"text/html\", \"value\": \"\u003cspan style=\\\"background-color: rgb(255, 255, 255);\\\"\u003eAn Incorrect Calculation of Buffer Size vulnerability in the routing protocol daemon (rpd) of Juniper Networks Junos OS and Junos OS Evolved allows an adjacent unauthenticated attacker to cause a memory corruption that leads\u0026nbsp;to a rpd crash.\u0026nbsp;\u003cbr\u003e\u003cbr\u003e\u003c/span\u003e\\n\\n\\n\\n\\n\\n\\n\\n\\n\\n\u003cp\u003eWhen\\nthe logical interface using a routing instance flaps continuously, specific updates are sent to the jflow/sflow modules. This results in memory corruption, leading to an rpd crash and restart.\u0026nbsp;\u003c/p\u003e\u003cbr\u003eContinued receipt of these specific updates will cause a sustained Denial of Service condition.\u003cbr\u003e\u003ctt\u003e\u003cbr\u003e\u003c/tt\u003e\u003cbr\u003e\u003cspan style=\\\"background-color: rgb(255, 255, 255);\\\"\u003eThis issue affects Junos OS:\u003cbr\u003e\u003cbr\u003e\u003cul\u003e\u003cli\u003eAll versions before 21.2R3-S9, \u003c/li\u003e\u003cli\u003eAll versions of 21.4, \u003c/li\u003e\u003cli\u003eAll versions of 22.2, \u003c/li\u003e\u003cli\u003efrom 22.4 before 22.4R3-S7, \u003c/li\u003e\u003cli\u003efrom 23.2 before 23.2R2-S3, \u003c/li\u003e\u003cli\u003efrom 23.4 before 23.4R2-S4, \u003c/li\u003e\u003cli\u003efrom 24.2 before 24.2R2.\u003c/li\u003e\u003c/ul\u003e\u003c/span\u003e\u003cp\u003eJunos OS Evolved:\u0026nbsp;\u003c/p\u003e\u003cp\u003e\u003c/p\u003e\u003cul\u003e\u003cli\u003eAll versions of 21.2-EVO,\u0026nbsp;\u003c/li\u003e\u003cli\u003eAll versions of 21.4-EVO,\u0026nbsp;\u003c/li\u003e\u003cli\u003eAll versions of 22.2-EVO,\u0026nbsp;\u003c/li\u003e\u003cli\u003efrom 22.4 before 22.4R3-S7-EVO,\u0026nbsp;\u003c/li\u003e\u003cli\u003efrom 23.2 before 23.2R2-S3-EVO,\u0026nbsp;\u003c/li\u003e\u003cli\u003efrom 23.4 before 23.4R2-S4-EVO,\u0026nbsp;\u003c/li\u003e\u003cli\u003efrom 24.2 before 24.2R2-EVO.\u003c/li\u003e\u003c/ul\u003e\u003cp\u003e\u003c/p\u003e\", \"base64\": false}]}], \"problemTypes\": [{\"descriptions\": [{\"lang\": \"en\", \"type\": \"CWE\", \"cweId\": \"CWE-131\", \"description\": \"CWE-131 Incorrect Calculation of Buffer Size\"}]}], \"configurations\": [{\"lang\": \"en\", \"value\": \"This issue only happens when jflow is configured:\\n\\n  [services flow-monitoring (version-ipfix|version9)]\", \"supportingMedia\": [{\"type\": \"text/html\", \"value\": \"\u003cp\u003eThis issue only happens when jflow is configured:\u003c/p\u003e\u003ccode\u003e  [services flow-monitoring (version-ipfix|version9)]\u003c/code\u003e\u003cbr\u003e\", \"base64\": false}]}], \"providerMetadata\": {\"orgId\": \"8cbe9d5a-a066-4c94-8978-4b15efeae968\", \"shortName\": \"juniper\", \"dateUpdated\": \"2025-08-20T18:32:11.120Z\"}}}",
      "cveMetadata": "{\"cveId\": \"CVE-2025-52955\", \"state\": \"PUBLISHED\", \"dateUpdated\": \"2025-08-20T18:32:11.120Z\", \"dateReserved\": \"2025-06-23T13:16:01.410Z\", \"assignerOrgId\": \"8cbe9d5a-a066-4c94-8978-4b15efeae968\", \"datePublished\": \"2025-07-11T14:42:20.206Z\", \"assignerShortName\": \"juniper\"}",
      "dataType": "CVE_RECORD",
      "dataVersion": "5.1"
    }
  }
}


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Forecast uses a logistic model when the trend is rising, or an exponential decay model when the trend is falling. Fitted via linearized least squares.

Sightings

Author Source Type Date Other

Nomenclature

  • Seen: The vulnerability was mentioned, discussed, or observed by the user.
  • Confirmed: The vulnerability has been validated from an analyst's perspective.
  • Published Proof of Concept: A public proof of concept is available for this vulnerability.
  • Exploited: The vulnerability was observed as exploited by the user who reported the sighting.
  • Patched: The vulnerability was observed as successfully patched by the user who reported the sighting.
  • Not exploited: The vulnerability was not observed as exploited by the user who reported the sighting.
  • Not confirmed: The user expressed doubt about the validity of the vulnerability.
  • Not patched: The vulnerability was not observed as successfully patched by the user who reported the sighting.



Detection rules are retrieved from Rulezet.