Cisco NX-OS Software Anycast Gateway Invalid ARP Vulnerability
CVE-2020-3174

4.7MEDIUM

Key Information:

Vendor

Cisco
Status
Cisco Nx-os Software 7.3(2)d1(1d)
Vendor
CVE Published:
26 February 2020

Badges

👾 Exploit Exists

What is CVE-2020-3174?

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.

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Affected Version(s)

Cisco NX-OS Software 7.3(2)D1(1d) < unspecified

References

https://tools.cisco.com/security/center/content/CiscoSecu...
vendor-advisoryx_refsource_CISCO

CVSS V3.1

Score:
4.7
Severity:
MEDIUM
Confidentiality:
None
Integrity:
Low
Availability:
None
Attack Vector:
Adjacent Network
Attack Complexity:
Low
Privileges Required:
None
User Interaction:
None
Scope:
Changed

Timeline

  • 👾

    Exploit known to exist

  • Vulnerability published

  • Vulnerability Reserved

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