CVE-2020-3174 (GCVE-0-2020-3174)

Vulnerability from cvelistv5 – Published: 2020-02-26 16:50 – Updated: 2024-11-15 17:38
VLAI?
Summary
A vulnerability in the anycast gateway feature of Cisco NX-OS Software could allow an unauthenticated, adjacent attacker to cause a device to learn invalid Address Resolution Protocol (ARP) entries. The ARP entries are for nonlocal IP addresses for the subnet. The vulnerability is due to improper validation of a received gratuitous ARP (GARP) request. An attacker could exploit this vulnerability by sending a malicious GARP packet on the local subnet to cause the ARP table on the device to become corrupted. A successful exploit could allow the attacker to populate the ARP table with incorrect entries, which could lead to traffic disruptions.
Severity ?
4.7 (Medium)
CVSS:3.0/AV:A/AC:L/PR:N/UI:N/S:C/C:N/I:L/A:N
CWE
Assigner
References
https://tools.cisco.com/security/center/content/C… vendor-advisoryx_refsource_CISCO
Impacted products
Vendor Product Version
Cisco Cisco NX-OS Software 7.3(2)D1(1d) Affected: unspecified , < n/a (custom)
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      "descriptions": "[{\"lang\": \"en\", \"value\": \"A vulnerability in the anycast gateway feature of Cisco NX-OS Software could allow an unauthenticated, adjacent attacker to cause a device to learn invalid Address Resolution Protocol (ARP) entries. The ARP entries are for nonlocal IP addresses for the subnet. The vulnerability is due to improper validation of a received gratuitous ARP (GARP) request. An attacker could exploit this vulnerability by sending a malicious GARP packet on the local subnet to cause the ARP table on the device to become corrupted. A successful exploit could allow the attacker to populate the ARP table with incorrect entries, which could lead to traffic disruptions.\"}, {\"lang\": \"es\", \"value\": \"Una vulnerabilidad en la funcionalidad anycast gateway de Cisco NX-OS Software, podr\\u00eda permitir a un atacante adyacente no autenticado causar que un dispositivo aprenda entradas Address Resolution Protocol (ARP) no v\\u00e1lidas. Las entradas ARP son para direcciones IP no locales para la subred. La vulnerabilidad es debido a una comprobaci\\u00f3n inapropiada de una petici\\u00f3n ARP gratuita (GARP) recibida. Un atacante podr\\u00eda explotar esta vulnerabilidad mediante el env\\u00edo de un paquete GARP malicioso sobre la subred local para causar que la tabla ARP en el dispositivo se corrompa. Una explotaci\\u00f3n con \\u00e9xito podr\\u00eda permitir a un atacante poblar la tabla ARP con entradas incorrectas, lo que podr\\u00eda conllevar a interrupciones del tr\\u00e1fico.\"}]",
      "id": "CVE-2020-3174",
      "lastModified": "2024-11-21T05:30:28.930",
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      "published": "2020-02-26T17:15:13.563",
      "references": "[{\"url\": \"https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-20200226-nxos-arp\", \"source\": \"ykramarz@cisco.com\", \"tags\": [\"Vendor Advisory\"]}, {\"url\": \"https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-20200226-nxos-arp\", \"source\": \"af854a3a-2127-422b-91ae-364da2661108\", \"tags\": [\"Vendor Advisory\"]}]",
      "sourceIdentifier": "ykramarz@cisco.com",
      "vulnStatus": "Modified",
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      "cveMetadata": "{\"cveId\": \"CVE-2020-3174\", \"state\": \"PUBLISHED\", \"dateUpdated\": \"2024-11-15T17:38:37.605Z\", \"dateReserved\": \"2019-12-12T00:00:00\", \"assignerOrgId\": \"d1c1063e-7a18-46af-9102-31f8928bc633\", \"datePublished\": \"2020-02-26T16:50:29.751893Z\", \"assignerShortName\": \"cisco\"}",
      "dataType": "CVE_RECORD",
      "dataVersion": "5.1"
    }
  }
}


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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.