Vulnerability Monitor

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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.


Security Impact Summary

This vulnerability carries a MEDIUM severity rating with a CVSS v3.1 score of 4.7, indicating it requires adjacent network access with relatively low complexity without requiring user interaction and does not require pre-existing privileges . The vulnerability impacts limited integrity, for affected systems. Impacting 80 products from cisco, from cisco, from cisco and 77 others, organizations running these solutions should prioritize assessment and patching.

Historical Context

Reported in 2020, this vulnerability emerged during an era marked by increased sophistication in supply chain attacks, cloud infrastructure vulnerabilities, and software-as-a-service (SaaS) security challenges. Security practices during this period emphasized zero-trust architectures, container security, and API protection.


Published

2020-02-26T17:15:13.563

Last Modified

2024-11-21T05:30:28.930

Status

Modified

Source

[email protected]

Severity

CVSSv3.1: 4.7 (MEDIUM)

CVSSv2 Vector

AV:A/AC:L/Au:N/C:N/I:P/A:N

  • Access Vector: ADJACENT_NETWORK
  • Access Complexity: LOW
  • Authentication: NONE
  • Confidentiality Impact: NONE
  • Integrity Impact: PARTIAL
  • Availability Impact: NONE
Exploitability Score

6.5

Impact Score

2.9

Weaknesses
  • Type: Secondary
    CWE-345
  • Type: Primary
    CWE-345

Affected Vendors & Products
Type Vendor Product Version/Range Vulnerable?
Operating System cisco nx-os 8.1\(1\) Yes
Operating System cisco nx-os 8.4\(1\) Yes
Operating System cisco nx-os 9.3\(1\) Yes
Hardware cisco mds_9132t - No
Hardware cisco mds_9148s - No
Hardware cisco mds_9148t - No
Hardware cisco mds_9216 - No
Hardware cisco mds_9216a - No
Hardware cisco mds_9216i - No
Hardware cisco mds_9222i - No
Hardware cisco mds_9506 - No
Hardware cisco mds_9509 - No
Hardware cisco mds_9513 - No
Hardware cisco mds_9706 - No
Hardware cisco mds_9710 - No
Hardware cisco mds_9718 - No
Hardware cisco nexus_3016 - No
Hardware cisco nexus_3048 - No
Hardware cisco nexus_3064 - No
Hardware cisco nexus_3064-t - No
Hardware cisco nexus_31108pc-v - No
Hardware cisco nexus_31108tc-v - No
Hardware cisco nexus_31128pq - No
Hardware cisco nexus_3132c-z - No
Hardware cisco nexus_3132q - No
Hardware cisco nexus_3132q-v - No
Hardware cisco nexus_3132q-xl - No
Hardware cisco nexus_3164q - No
Hardware cisco nexus_3172 - No
Hardware cisco nexus_3172pq-xl - No
Hardware cisco nexus_3172tq - No
Hardware cisco nexus_3172tq-32t - No
Hardware cisco nexus_3172tq-xl - No
Hardware cisco nexus_3232c_ - No
Hardware cisco nexus_3264c-e - No
Hardware cisco nexus_3264q - No
Hardware cisco nexus_3408-s - No
Hardware cisco nexus_34180yc - No
Hardware cisco nexus_3432d-s - No
Hardware cisco nexus_3464c - No
Hardware cisco nexus_3524 - No
Hardware cisco nexus_3524-x - No
Hardware cisco nexus_3524-xl - No
Hardware cisco nexus_3548 - No
Hardware cisco nexus_3548-x - No
Hardware cisco nexus_3548-xl - No
Hardware cisco nexus_36180yc-r - No
Hardware cisco nexus_3636c-r - No
Hardware cisco nexus_7000 - No
Hardware cisco nexus_7700 - No
Hardware cisco nexus_9000v - No
Hardware cisco nexus_92160yc-x - No
Hardware cisco nexus_92300yc - No
Hardware cisco nexus_92304qc - No
Hardware cisco nexus_92348gc-x - No
Hardware cisco nexus_9236c - No
Hardware cisco nexus_9272q - No
Hardware cisco nexus_93108tc-ex - No
Hardware cisco nexus_93108tc-fx - No
Hardware cisco nexus_93120tx - No
Hardware cisco nexus_93128tx - No
Hardware cisco nexus_93180lc-ex - No
Hardware cisco nexus_93180yc-ex - No
Hardware cisco nexus_93180yc-fx - No
Hardware cisco nexus_93216tc-fx2 - No
Hardware cisco nexus_93240yc-fx2 - No
Hardware cisco nexus_9332c - No
Hardware cisco nexus_9332pq - No
Hardware cisco nexus_93360yc-fx2 - No
Hardware cisco nexus_9336c-fx2 - No
Hardware cisco nexus_9336pq_aci_spine - No
Hardware cisco nexus_9348gc-fxp - No
Hardware cisco nexus_9364c - No
Hardware cisco nexus_9372px - No
Hardware cisco nexus_9372px-e - No
Hardware cisco nexus_9372tx - No
Hardware cisco nexus_9372tx-e - No
Hardware cisco nexus_9396px - No
Hardware cisco nexus_9396tx - No
Hardware cisco nexus_9504 - No
Hardware cisco nexus_9508 - No
Hardware cisco nexus_9516 - No

References

How SecUtils Interprets This CVE

SecUtils normalizes and enriches National Vulnerability Database (NVD) records by standardizing vendor and product identifiers, aggregating vulnerability metadata from both NVD and MITRE sources, and providing structured context for security teams. For cisco's affected products, we extract Common Platform Enumeration (CPE) data, Common Weakness Enumeration (CWE) classifications, CVSS severity metrics, and reference data to enable rapid vulnerability prioritization and asset correlation. This record contains no exploit code, proof-of-concept instructions, or attack methodologies—only defensive intelligence necessary for patch management, risk assessment, and security operations.