A vulnerability in the Link Layer Discovery Protocol (LLDP) implementation for Cisco FXOS Software and Cisco NX-OS Software could allow an unauthenticated, adjacent attacker to cause a denial of service (DoS) condition when the device unexpectedly reloads. The vulnerability is due to improper input validation of certain type, length, value (TLV) fields of the LLDP frame header. An attacker could exploit this vulnerability by sending a crafted LLDP packet to an interface on the targeted device. A successful exploit could allow the attacker to cause the switch to reload unexpectedly.
This vulnerability carries a HIGH severity rating with a CVSS v3.1 score of 8.8, indicating it requires adjacent network access with relatively low complexity without requiring user interaction and does not require pre-existing privileges . The vulnerability impacts confidentiality (data exposure), integrity (unauthorized modifications), and availability (service disruption) for affected systems. Impacting 12 products from cisco, from cisco, from cisco and 9 others, organizations running these solutions should prioritize assessment and patching.
First disclosed in 2018, this vulnerability was reported during a period defined by widespread IoT adoption challenges, mobile security concerns, and the emergence of advanced persistent threat (APT) techniques. Contemporary mitigation strategies focused on secure development practices and third-party component vetting.
2018-10-17T19:29:00.303
2024-11-21T03:38:08.380
Modified
CVSSv3.0: 8.8 (HIGH)
AV:A/AC:M/Au:N/C:N/I:N/A:P
5.5
2.9
| Type | Vendor | Product | Version/Range | Vulnerable? |
|---|---|---|---|---|
| Operating System | cisco | nx-os | 6.0\(4\) | Yes |
| Operating System | cisco | nx-os | 6.1\(3\)s2 | Yes |
| Hardware | cisco | nexus_7000_10-slot | - | No |
| Hardware | cisco | nexus_7000_18-slot | - | No |
| Hardware | cisco | nexus_7000_4-slot | - | No |
| Hardware | cisco | nexus_7000_9-slot | - | No |
| Hardware | cisco | nexus_7700_10-slot | - | No |
| Hardware | cisco | nexus_7700_18-slot | - | No |
| Hardware | cisco | nexus_7700_2-slot | - | No |
| Hardware | cisco | nexus_7700_6-slot | - | No |
| Operating System | cisco | firepower_extensible_operating_system | r231 | Yes |
| Operating System | cisco | nx-os | r231 | Yes |
| Hardware | cisco | firepower_9300 | - | No |
| Operating System | cisco | nx-os | 12.3\(1e\) | Yes |
| Hardware | cisco | firepower_9300 | - | No |
| Operating System | cisco | nx-os | 3.2\(3d\)c | Yes |
| Hardware | cisco | ucs | - | No |
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.