FKIE_CVE-2020-3118

Vulnerability from fkie_nvd - Published: 2020-02-05 18:15 - Updated: 2025-10-28 13:57
Severity ?
8.8 (High) - CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
Summary
A vulnerability in the Cisco Discovery Protocol implementation for Cisco IOS XR Software could allow an unauthenticated, adjacent attacker to execute arbitrary code or cause a reload on an affected device. The vulnerability is due to improper validation of string input from certain fields in Cisco Discovery Protocol messages. An attacker could exploit this vulnerability by sending a malicious Cisco Discovery Protocol packet to an affected device. A successful exploit could allow the attacker to cause a stack overflow, which could allow the attacker to execute arbitrary code with administrative privileges on an affected device. Cisco Discovery Protocol is a Layer 2 protocol. To exploit this vulnerability, an attacker must be in the same broadcast domain as the affected device (Layer 2 adjacent).
References
psirt@cisco.comhttp://packetstormsecurity.com/files/156203/Cisco-Discovery-Protocol-CDP-Remote-Device-Takeover.htmlThird Party Advisory, VDB Entry
psirt@cisco.comhttps://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-20200205-iosxr-cdp-rceVendor Advisory
af854a3a-2127-422b-91ae-364da2661108http://packetstormsecurity.com/files/156203/Cisco-Discovery-Protocol-CDP-Remote-Device-Takeover.htmlThird Party Advisory, VDB Entry
af854a3a-2127-422b-91ae-364da2661108https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-20200205-iosxr-cdp-rceVendor Advisory
134c704f-9b21-4f2e-91b3-4a467353bcc0https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2020-3118US Government Resource
Impacted products
Vendor Product Version
cisco ios_xr *
cisco ios_xr *
cisco ios_xr 6.5.3
cisco asr_9000v -
cisco asr_9001 -
cisco asr_9006 -
cisco asr_9010 -
cisco asr_9901 -
cisco asr_9904 -
cisco asr_9906 -
cisco asr_9910 -
cisco asr_9912 -
cisco asr_9922 -
cisco ncs_540-12z20g-sys-a -
cisco ncs_540-12z20g-sys-d -
cisco ncs_540-24z8q2c-sys -
cisco ncs_540-28z4c-sys-a -
cisco ncs_540-28z4c-sys-d -
cisco ncs_540-acc-sys -
cisco ncs_540x-12z16g-sys-a -
cisco ncs_540x-12z16g-sys-d -
cisco ncs_540x-16z4g8q2c-a -
cisco ncs_540x-16z4g8q2c-d -
cisco ncs_540x-acc-sys -
cisco ncs_5501 -
cisco ncs_5501-se -
cisco ncs_5502 -
cisco ncs_5502-se -
cisco ncs_5508 -
cisco ncs_5516 -
cisco xrv_9000 -
cisco ios_xr 5.2.5
cisco ncs_6000 -
cisco ncs_6008 -
cisco ios_xr 6.4.2
cisco asr_9000 -
cisco asr_9000v -
cisco asr_9001 -
cisco asr_9006 -
cisco asr_9010 -
cisco asr_9901 -
cisco asr_9903 -
cisco asr_9904 -
cisco asr_9906 -
cisco asr_9910 -
cisco asr_9912 -
cisco asr_9920 -
cisco asr_9922 -
cisco crs-x -
cisco ios_xr 6.6.25
cisco ncs_560 -
cisco ios_xr 7.0.1
cisco ncs_540l -
To clipboard 

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  "descriptions": [
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      "value": "A vulnerability in the Cisco Discovery Protocol implementation for Cisco IOS XR Software could allow an unauthenticated, adjacent attacker to execute arbitrary code or cause a reload on an affected device. The vulnerability is due to improper validation of string input from certain fields in Cisco Discovery Protocol messages. An attacker could exploit this vulnerability by sending a malicious Cisco Discovery Protocol packet to an affected device. A successful exploit could allow the attacker to cause a stack overflow, which could allow the attacker to execute arbitrary code with administrative privileges on an affected device. Cisco Discovery Protocol is a Layer 2 protocol. To exploit this vulnerability, an attacker must be in the same broadcast domain as the affected device (Layer 2 adjacent)."
    },
    {
      "lang": "es",
      "value": "Una vulnerabilidad en la implementaci\u00f3n de Cisco Discovery Protocol para Cisco IOS XR Software, podr\u00eda permitir a un atacante adyacente no autenticado ejecutar c\u00f3digo arbitrario o causar una recarga sobre un dispositivo afectado. La vulnerabilidad es debido a la comprobaci\u00f3n inapropiada de la entrada de cadena de determinados campos en los mensajes de Cisco Discovery Protocol. Un atacante podr\u00eda explotar esta vulnerabilidad mediante el env\u00edo de un paquete malicioso de Cisco Discovery Protocol hacia un dispositivo afectado. Una explotaci\u00f3n con \u00e9xito podr\u00eda permitir al atacante causar un desbordamiento del b\u00fafer de la pila, lo que podr\u00eda permitir al atacante ejecutar c\u00f3digo arbitrario con privilegios administrativos sobre un dispositivo afectado. Cisco Discovery Protocol es un protocolo de Capa 2. Para explotar esta vulnerabilidad, un atacante debe encontrarse en el mismo dominio de difusi\u00f3n que el dispositivo afectado (Capa 2 adyacente)."
    }
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  "id": "CVE-2020-3118",
  "lastModified": "2025-10-28T13:57:54.817",
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  "published": "2020-02-05T18:15:10.907",
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      "source": "psirt@cisco.com",
      "tags": [
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        "VDB Entry"
      ],
      "url": "http://packetstormsecurity.com/files/156203/Cisco-Discovery-Protocol-CDP-Remote-Device-Takeover.html"
    },
    {
      "source": "psirt@cisco.com",
      "tags": [
        "Vendor Advisory"
      ],
      "url": "https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-20200205-iosxr-cdp-rce"
    },
    {
      "source": "af854a3a-2127-422b-91ae-364da2661108",
      "tags": [
        "Third Party Advisory",
        "VDB Entry"
      ],
      "url": "http://packetstormsecurity.com/files/156203/Cisco-Discovery-Protocol-CDP-Remote-Device-Takeover.html"
    },
    {
      "source": "af854a3a-2127-422b-91ae-364da2661108",
      "tags": [
        "Vendor Advisory"
      ],
      "url": "https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-20200205-iosxr-cdp-rce"
    },
    {
      "source": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
      "tags": [
        "US Government Resource"
      ],
      "url": "https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2020-3118"
    }
  ],
  "sourceIdentifier": "psirt@cisco.com",
  "vulnStatus": "Analyzed",
  "weaknesses": [
    {
      "description": [
        {
          "lang": "en",
          "value": "CWE-134"
        }
      ],
      "source": "psirt@cisco.com",
      "type": "Secondary"
    },
    {
      "description": [
        {
          "lang": "en",
          "value": "CWE-787"
        }
      ],
      "source": "nvd@nist.gov",
      "type": "Primary"
    }
  ]
}


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Tags
Taxonomy of the tags.




Sightings

Author Source Type Date

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.