CVE-2024-20294
Description
A vulnerability in the Link Layer Discovery Protocol (LLDP) feature of Cisco FXOS Software and Cisco NX-OS Software could allow an unauthenticated, adjacent attacker to cause a denial of service (DoS) condition on an affected device. This vulnerability is due to improper handling of specific fields in an LLDP frame. An attacker could exploit this vulnerability by sending a crafted LLDP packet to an interface of an affected device and having an authenticated user retrieve LLDP statistics from the affected device through CLI show commands or Simple Network Management Protocol (SNMP) requests. A successful exploit could allow the attacker to cause the LLDP service to crash and stop running on the affected device. In certain situations, the LLDP crash may result in a reload of the affected device. Note: LLDP is a Layer 2 link protocol. To exploit this vulnerability, an attacker would need to be directly connected to an interface of an affected device, either physically or logically (for example, through a Layer 2 Tunnel configured to transport the LLDP protocol).
How to fix
Sources list no fixed version or patch link for this vulnerability.
Affected products
| Product | Affected versions | Fixed in |
|---|---|---|
| cisco nx-os | 12.0\(1m\), 12.0\(1n\), 12.0\(1o\), 12.0\(1p\), 12.0\(1q\), 12.0\(1r\), 12.0\(2f\), 12.0\(2g\), 12.0\(2h\), 12.0\(2l\), 12.0\(2m\), 12.0\(2n\), 12.0\(2o\), 12.1\(1h\), 12.1\(1i\), 12.1\(2e\), 12.1\(2g\), 12.1\(2k\), 12.1\(3g\), 12.1\(3h\), 12.1\(3j\), 12.1\(4a\), 12.2\(1n\), 12.2\(1o\), 12.2\(2e\), 12.2\(2f\), 12.2\(2i\), 12.2\(2j\), 12.2\(2k\), 12.2\(2q\), 12.2\(3j\), 12.2\(3p\), 12.2\(3r\), 12.2\(3s\), 12.2\(3t\), 12.2\(4f\), 12.2\(4p\), 12.2\(4q\), 12.2\(4r\), 12.3\(1e\), 12.3\(1f\), 12.3\(1i\), 12.3\(1l\), 12.3\(1o\), 12.3\(1p\), 13.0\(1k\), 13.0\(2h\), 13.0\(2k\), 13.0\(2n\), 13.1\(1i\), 13.1\(2m\), 13.1\(2o\), 13.1\(2p\), 13.1\(2q\), 13.1\(2s\), 13.1\(2t\), 13.1\(2u\), 13.1\(2v\), 13.2\(1l\), 13.2\(1m\), 13.2\(2l\), 13.2\(2o\), 13.2\(3i\), 13.2\(3n\), 13.2\(3o\), 13.2\(3r\), 13.2\(3s\), 13.2\(4d\), 13.2\(4e\), 13.2\(5d\), 13.2\(5e\), 13.2\(5f\), 13.2\(6i\), 13.2\(7f\), 13.2\(7k\), 13.2\(9b\), 13.2\(9f\), 13.2\(9h\), 13.2\(10e\), 13.2\(10f\), 13.2\(10g\), 14.0\(1h\), 14.0\(2c\), 14.0\(3c\), 14.0\(3d\), 14.1\(1i\), 14.1\(1j\), 14.1\(1k\), 14.1\(1l\), 14.1\(2g\), 14.1\(2m\), 14.1\(2o\), 14.1\(2s\), 14.1\(2u\), 14.1\(2w\), 14.1\(2x\), 14.2\(1i\), 14.2\(1j\), 14.2\(1l\), 14.2\(2e\), 14.2\(2f\) | — |
| cisco firepower_extensible_operating_system | 2.2.1.63, 2.2.1.66, 2.2.1.70, 2.2.2.17, 2.2.2.19, 2.2.2.24, 2.2.2.26, 2.2.2.28, 2.2.2.54, 2.2.2.60, 2.2.2.71, 2.2.2.83, 2.2.2.86, 2.2.2.91, 2.2.2.97, 2.2.2.101, 2.2.2.137, 2.2.2.148, 2.2.2.149, 2.3.1.56, 2.3.1.58, 2.3.1.66, 2.3.1.73, 2.3.1.75, 2.3.1.88, 2.3.1.91, 2.3.1.93, 2.3.1.99, 2.3.1.110, 2.3.1.111, 2.3.1.130, 2.3.1.144, 2.3.1.145, 2.3.1.155, 2.3.1.166, 2.3.1.173, 2.3.1.179, 2.3.1.180, 2.3.1.190, 2.3.1.215, 2.3.1.216, 2.3.1.219, 2.3.1.230, 2.6.1.131, 2.6.1.157, 2.6.1.166, 2.6.1.169, 2.6.1.174, 2.6.1.187, 2.6.1.192, 2.6.1.204, 2.6.1.214, 2.6.1.224, 2.6.1.229, 2.6.1.230, 2.6.1.238, 2.6.1.239, 2.6.1.254, 2.6.1.259, 2.6.1.264, 2.6.1.265, 2.8.1.105, 2.8.1.125, 2.8.1.139, 2.8.1.143, 2.8.1.152, 2.8.1.162, 2.8.1.164, 2.8.1.172, 2.8.1.186, 2.8.1.190, 2.8.1.198, 2.9.1.131, 2.9.1.135, 2.9.1.143, 2.9.1.150, 2.9.1.158, 2.10.1.159, 2.10.1.166, 2.10.1.179, 2.10.1.207, 2.10.1.234, 2.10.1.245, 2.10.1.271, 2.11.1.154, 2.11.1.182, 2.11.1.200, 2.11.1.205, 2.12.0.31, 2.12.0.432, 2.12.0.450, 2.12.0.467, 2.12.0.498, 2.12.1.29, 2.12.1.48, 2.13.0.198, 2.13.0.212, 2.13.0.243, 2.14.1.131 | — |
Check your version
Choose the product and enter the version you run to see whether it falls in the affected range.
Attack Surface Management
See the assets tied to your domains, the technologies they run and known vulnerabilities in one list.