fkie_cve-2024-39542
Vulnerability from fkie_nvd
Published
2024-07-11 17:15
Modified
2025-08-08 16:43
Severity ?
7.5 (High) - CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
Summary
An Improper Validation of Syntactic Correctness of Input vulnerability in the Packet Forwarding Engine (PFE) of Juniper Networks Junos OS on MX Series with MPC10/11 or LC9600, MX304, and Junos OS Evolved on ACX Series and PTX Series allows an unauthenticated, network based attacker to cause a Denial-of-Service (DoS). This issue can occur in two scenarios: 1. If a device, which is configured with SFLOW and ECMP, receives specific valid transit traffic, which is subject to sampling, the packetio process crashes, which in turn leads to an evo-aftman crash and causes the FPC to stop working until it is restarted. (This scenario is only applicable to PTX but not to ACX or MX.) 2. If a device receives a malformed CFM packet on an interface configured with CFM, the packetio process crashes, which in turn leads to an evo-aftman crash and causes the FPC to stop working until it is restarted. Please note that the CVSS score is for the formally more severe issue 1. The CVSS score for scenario 2. is: 6.5 (CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H) This issue affects Junos OS: * All versions before 21.2R3-S4, * 21.4 versions before 21.4R2, * 22.2 versions before 22.2R3-S2;  Junos OS Evolved: * All versions before 21.2R3-S8-EVO, * 21.4 versions before 21.4R2-EVO.
References
sirt@juniper.nethttps://supportportal.juniper.net/JSA83002Vendor Advisory
af854a3a-2127-422b-91ae-364da2661108https://supportportal.juniper.net/JSA83002Vendor Advisory
Impacted products
Vendor Product Version
juniper junos 21.4
juniper junos 21.4
juniper junos 21.4
juniper junos 21.4
juniper junos 22.2
juniper junos 22.2
juniper junos 22.2
juniper junos 22.2
juniper junos 22.2
juniper junos_os_evolved 21.2
juniper junos_os_evolved 21.2
juniper junos_os_evolved 21.2
juniper junos_os_evolved 21.2
juniper junos_os_evolved 21.2
juniper junos_os_evolved 21.2
juniper junos_os_evolved 21.2
juniper junos_os_evolved 21.2
juniper junos_os_evolved 21.2
juniper junos_os_evolved 21.2
juniper junos_os_evolved 21.2
juniper junos_os_evolved 21.2
juniper junos_os_evolved 21.2
juniper junos_os_evolved 21.2
juniper junos_os_evolved 21.2
juniper junos_os_evolved 21.4
juniper junos_os_evolved 21.4
juniper junos_os_evolved 21.4
juniper junos_os_evolved 21.4


To clipboard 

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  "cveTags": [],
  "descriptions": [
    {
      "lang": "en",
      "value": "An Improper Validation of Syntactic Correctness of Input vulnerability in the Packet Forwarding Engine (PFE) of Juniper Networks Junos OS on MX Series with MPC10/11 or LC9600, MX304, and Junos OS Evolved on ACX Series and PTX Series allows an unauthenticated, network based attacker to cause a Denial-of-Service (DoS).\n\nThis issue can occur in two scenarios:\n\n1. If a device, which is configured with SFLOW and ECMP, receives specific valid transit traffic, which is subject to sampling, the packetio process crashes, which in turn leads to an evo-aftman crash and causes the FPC to stop working until it is restarted. (This scenario is only applicable to PTX but not to ACX or MX.)\n\n2. If a device receives a malformed CFM packet on an interface configured with CFM, the packetio process crashes, which in turn leads to an evo-aftman crash and causes the FPC to stop working until it is restarted.\u00a0Please note that the CVSS score is for the formally more severe issue 1.\n\nThe CVSS score for scenario 2. is: 6.5 (CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H)\n\n\n\n\nThis issue affects Junos OS:\n\n\n\n  *  All versions before\u00a021.2R3-S4,\n  *  21.4 versions before 21.4R2,\n  *  22.2 versions before 22.2R3-S2;\u00a0\n\n\n\n\nJunos OS Evolved:\n\n\n\n\n  *  All versions before\u00a021.2R3-S8-EVO,\n  *  21.4 versions before 21.4R2-EVO."
    },
    {
      "lang": "es",
      "value": "Una validaci\u00f3n inadecuada de la correcci\u00f3n sint\u00e1ctica de la vulnerabilidad de entrada en Packet Forwarding Engine (PFE) de Juniper Networks Junos OS en la serie MX con MPC10/11 o LC9600, MX304 y Junos OS evolucionado en las series ACX y PTX permite una vulnerabilidad basada en red no autenticada atacante cause una denegaci\u00f3n de servicio (DoS). Este problema puede ocurrir en dos escenarios: 1. Si un dispositivo, que est\u00e1 configurado con SFLOW y ECMP, recibe tr\u00e1fico de tr\u00e1nsito v\u00e1lido espec\u00edfico, que est\u00e1 sujeto a muestreo, el proceso de paquete falla, lo que a su vez conduce a un fallo de evo-aftman y hace que el FPC deje de funcionar hasta que se reinicie. (Este escenario solo se aplica a PTX pero no a ACX o MX). 2. Si un dispositivo recibe un paquete CFM con formato incorrecto en una interfaz configurada con CFM, el proceso de paquete falla, lo que a su vez provoca un bloqueo de evo-aftman y provoca el FPC deje de funcionar hasta que se reinicie. Tenga en cuenta que la puntuaci\u00f3n CVSS es para el problema formalmente m\u00e1s grave 1. La puntuaci\u00f3n CVSS para el escenario 2 es: 6,5 (CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/ C:N/I:N/A:H) Este problema afecta a Junos OS: * Todas las versiones anteriores a 21.2R3-S4, * Versiones 21.4 anteriores a 21.4R2, * Versiones 22.2 anteriores a 22.2R3-S2; Junos OS Evolved: * Todas las versiones anteriores a 21.2R3-S8-EVO, * Versiones 21.4 anteriores a 21.4R2-EVO."
    }
  ],
  "id": "CVE-2024-39542",
  "lastModified": "2025-08-08T16:43:44.233",
  "metrics": {
    "cvssMetricV31": [
      {
        "cvssData": {
          "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"
        },
        "exploitabilityScore": 3.9,
        "impactScore": 3.6,
        "source": "sirt@juniper.net",
        "type": "Secondary"
      }
    ],
    "cvssMetricV40": [
      {
        "cvssData": {
          "Automatable": "NOT_DEFINED",
          "Recovery": "NOT_DEFINED",
          "Safety": "NOT_DEFINED",
          "attackComplexity": "LOW",
          "attackRequirements": "NONE",
          "attackVector": "NETWORK",
          "availabilityRequirement": "NOT_DEFINED",
          "baseScore": 8.7,
          "baseSeverity": "HIGH",
          "confidentialityRequirement": "NOT_DEFINED",
          "exploitMaturity": "NOT_DEFINED",
          "integrityRequirement": "NOT_DEFINED",
          "modifiedAttackComplexity": "NOT_DEFINED",
          "modifiedAttackRequirements": "NOT_DEFINED",
          "modifiedAttackVector": "NOT_DEFINED",
          "modifiedPrivilegesRequired": "NOT_DEFINED",
          "modifiedSubAvailabilityImpact": "NOT_DEFINED",
          "modifiedSubConfidentialityImpact": "NOT_DEFINED",
          "modifiedSubIntegrityImpact": "NOT_DEFINED",
          "modifiedUserInteraction": "NOT_DEFINED",
          "modifiedVulnAvailabilityImpact": "NOT_DEFINED",
          "modifiedVulnConfidentialityImpact": "NOT_DEFINED",
          "modifiedVulnIntegrityImpact": "NOT_DEFINED",
          "privilegesRequired": "NONE",
          "providerUrgency": "NOT_DEFINED",
          "subAvailabilityImpact": "LOW",
          "subConfidentialityImpact": "NONE",
          "subIntegrityImpact": "NONE",
          "userInteraction": "NONE",
          "valueDensity": "NOT_DEFINED",
          "vectorString": "CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:L/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X",
          "version": "4.0",
          "vulnAvailabilityImpact": "HIGH",
          "vulnConfidentialityImpact": "NONE",
          "vulnIntegrityImpact": "NONE",
          "vulnerabilityResponseEffort": "NOT_DEFINED"
        },
        "source": "sirt@juniper.net",
        "type": "Secondary"
      }
    ]
  },
  "published": "2024-07-11T17:15:13.367",
  "references": [
    {
      "source": "sirt@juniper.net",
      "tags": [
        "Vendor Advisory"
      ],
      "url": "https://supportportal.juniper.net/JSA83002"
    },
    {
      "source": "af854a3a-2127-422b-91ae-364da2661108",
      "tags": [
        "Vendor Advisory"
      ],
      "url": "https://supportportal.juniper.net/JSA83002"
    }
  ],
  "sourceIdentifier": "sirt@juniper.net",
  "vulnStatus": "Analyzed",
  "weaknesses": [
    {
      "description": [
        {
          "lang": "en",
          "value": "CWE-1286"
        }
      ],
      "source": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
      "type": "Secondary"
    }
  ]
}


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