Attacker Value
Unknown
CVE-2021-1231
Attacker Value
Unknown
(0 users assessed)
Exploitability
Unknown
(0 users assessed)CVE-2021-1231
(Last updated February 22, 2025) ▾
MITRE ATT&CK
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Description
A vulnerability in the Link Layer Discovery Protocol (LLDP) for Nexus 9000 Series Fabric Switches in Application Centric Infrastructure (ACI) mode could allow an unauthenticated, adjacent attacker to disable switching on a small form-factor pluggable (SFP) interface. This vulnerability is due to incomplete validation of the source of a received LLDP packet. An attacker could exploit this vulnerability by sending a crafted LLDP packet on an SFP interface to an affected device. A successful exploit could allow the attacker to disable switching on the SFP interface, which could disrupt network traffic.
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CVSS V3 Severity and Metrics
Data provided by the National Vulnerability Database (NVD)
Base Score:
4.7 Medium
Impact Score:
1.4
Exploitability Score:
2.8
Attack Vector (AV):
Adjacent_network
Attack Complexity (AC):
Low
Privileges Required (PR):
None
User Interaction (UI):
None
Scope (S):
Changed
Confidentiality (C):
None
Integrity (I):
None
Availability (A):
Low
General Information
Vendors
Products
- nx-os 11.0(1b),
- nx-os 11.0(1c),
- nx-os 11.0(1d),
- nx-os 11.0(1e),
- nx-os 11.0(2j),
- nx-os 11.0(2m),
- nx-os 11.0(3f),
- nx-os 11.0(3i),
- nx-os 11.0(3k),
- nx-os 11.0(3n),
- nx-os 11.0(3o),
- nx-os 11.0(4g),
- nx-os 11.0(4h),
- nx-os 11.0(4o),
- nx-os 11.0(4q),
- nx-os 11.1(1j),
- nx-os 11.1(1o),
- nx-os 11.1(1r),
- nx-os 11.1(1s),
- nx-os 11.1(2h),
- nx-os 11.1(2i),
- nx-os 11.1(3f),
- nx-os 11.1(4e),
- nx-os 11.1(4f),
- nx-os 11.1(4g),
- nx-os 11.1(4i),
- nx-os 11.1(4l),
- nx-os 11.1(4m),
- nx-os 11.2(1i),
- nx-os 11.2(1k),
- nx-os 11.2(1m),
- nx-os 11.2(2g),
- nx-os 11.2(2h),
- nx-os 11.2(2i),
- nx-os 11.2(2j),
- nx-os 11.2(3c),
- nx-os 11.2(3e),
- nx-os 11.2(3h),
- nx-os 11.2(3m),
- nx-os 11.3(1g),
- nx-os 11.3(1h),
- nx-os 11.3(1i),
- nx-os 11.3(1j),
- nx-os 11.3(2f),
- nx-os 11.3(2h),
- nx-os 11.3(2i),
- nx-os 11.3(2j),
- nx-os 11.3(2k),
- nx-os 12.0(1m),
- nx-os 12.0(1n),
- nx-os 12.0(1o),
- nx-os 12.0(1p),
- nx-os 12.0(1q),
- nx-os 12.0(1r),
- nx-os 12.0(2f),
- nx-os 12.0(2g),
- nx-os 12.0(2h),
- nx-os 12.0(2l),
- nx-os 12.0(2m),
- nx-os 12.0(2n),
- nx-os 12.0(2o),
- nx-os 12.1(1h),
- nx-os 12.1(1i),
- nx-os 12.1(2e),
- nx-os 12.1(2g),
- nx-os 12.1(2k),
- nx-os 12.1(3g),
- nx-os 12.1(3h),
- nx-os 12.1(3j),
- nx-os 12.1(4a),
- nx-os 12.2(1k),
- nx-os 12.2(1n),
- nx-os 12.2(1o),
- nx-os 12.2(2e),
- nx-os 12.2(2f),
- nx-os 12.2(2i),
- nx-os 12.2(2j),
- nx-os 12.2(2k),
- nx-os 12.2(2q),
- nx-os 12.2(3j),
- nx-os 12.2(3p),
- nx-os 12.2(3r),
- nx-os 12.2(3s),
- nx-os 12.2(3t),
- nx-os 12.2(4f),
- nx-os 12.2(4p),
- nx-os 12.2(4q),
- nx-os 12.2(4r),
- nx-os 12.3(1e),
- nx-os 12.3(1f),
- nx-os 12.3(1i),
- nx-os 12.3(1l),
- nx-os 12.3(1o),
- nx-os 12.3(1p),
- nx-os 13.0(1k),
- nx-os 13.0(2h),
- nx-os 13.0(2k),
- nx-os 13.0(2n),
- nx-os 13.1(1i),
- nx-os 13.1(2m),
- nx-os 13.1(2o),
- nx-os 13.1(2p),
- nx-os 13.1(2q),
- nx-os 13.1(2s),
- nx-os 13.1(2t),
- nx-os 13.1(2u),
- nx-os 13.1(2v),
- nx-os 13.2(1l),
- nx-os 13.2(1m),
- nx-os 13.2(2l),
- nx-os 13.2(2o),
- nx-os 13.2(3i),
- nx-os 13.2(3j),
- nx-os 13.2(3n),
- nx-os 13.2(3o),
- nx-os 13.2(3r),
- nx-os 13.2(3s),
- nx-os 13.2(41d),
- nx-os 13.2(4d),
- nx-os 13.2(4e),
- nx-os 13.2(5d),
- nx-os 13.2(5e),
- nx-os 13.2(5f),
- nx-os 13.2(6i),
- nx-os 13.2(7f),
- nx-os 13.2(7k),
- nx-os 13.2(8d),
- nx-os 13.2(9b),
- nx-os 13.2(9f),
- nx-os 13.2(9h),
- nx-os 14.0(1h),
- nx-os 14.0(2c),
- nx-os 14.0(3c),
- nx-os 14.0(3d),
- nx-os 14.1(1i),
- nx-os 14.1(1j),
- nx-os 14.1(1k),
- nx-os 14.1(1l),
- nx-os 14.1(2g),
- nx-os 14.1(2m),
- nx-os 14.1(2o),
- nx-os 14.1(2s),
- nx-os 14.1(2u),
- nx-os 14.1(2w),
- nx-os 14.1(2x),
- nx-os 14.2(1i),
- nx-os 14.2(1j),
- nx-os 14.2(1l),
- nx-os 14.2(2e),
- nx-os 14.2(2f),
- nx-os 14.2(2g),
- nx-os 14.2(3j),
- nx-os 14.2(3l),
- nx-os 14.2(3n),
- nx-os 14.2(3q),
- nx-os 14.2(4i),
- nx-os 14.2(4k),
- nx-os 14.2(4o),
- nx-os 14.2(4p),
- nx-os 14.2(5k),
- nx-os 15.0(1k),
- nx-os 15.0(1l),
- nx-os 15.0(2e),
- nx-os 15.0(2h)
References
