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Status published
Medium
CVE-2024-20294
A vulnerability in the Link Layer Discovery Protocol (LLDP) feature...
Vulnerability 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).
Impact Analysis
Refer to official advisory for detailed impact metrics.
Remediation
Ensure systems are updated to the latest vendor-supplied patch levels.
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Credits & Attribution
No credits recorded in the NVD database.
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View all reports →Affected Software
Cisco NX-OS Software, Cisco Unified Computing System (Managed), Cisco Firepower Extensible Operating System (FXOS), Cisco NX-OS System Software in ACI Mode
Vulnerable Versions:
6.0(2)A3(1), 6.0(2)A3(2), 6.0(2)A3(4), 6.0(2)A4(1), 6.0(2)A4(2), 6.0(2)A4(3), 6.0(2)A4(4), 6.0(2)A4(5), 6.0(2)A4(6), 6.0(2)A6(1), 6.0(2)A6(1a), 6.0(2)A6(2), 6.0(2)A6(2a), 6.0(2)A6(3), 6.0(2)A6(3a), 6.0(2)A6(4), 6.0(2)A6(4a), 6.0(2)A6(5), 6.0(2)A6(5a), 6.0(2)A6(5b), 6.0(2)A6(6), 6.0(2)A6(7), 6.0(2)A6(8), 6.0(2)A7(1), 6.0(2)A7(1a), 6.0(2)A7(2), 6.0(2)A7(2a), 6.0(2)A8(1), 6.0(2)A8(2), 6.0(2)A8(3), 6.0(2)A8(4), 6.0(2)A8(4a), 6.0(2)A8(5), 6.0(2)A8(6), 6.0(2)A8(7), 6.0(2)A8(7a), 6.0(2)A8(7b), 6.0(2)A8(8), 6.0(2)A8(9), 6.0(2)A8(10a), 6.0(2)A8(10), 6.0(2)A8(11), 6.0(2)A8(11a), 6.0(2)A8(11b), 6.0(2)U2(1), 6.0(2)U2(2), 6.0(2)U2(3), 6.0(2)U2(4), 6.0(2)U2(5), 6.0(2)U2(6), 6.0(2)U3(1), 6.0(2)U3(2), 6.0(2)U3(3), 6.0(2)U3(4), 6.0(2)U3(5), 6.0(2)U3(6), 6.0(2)U3(7), 6.0(2)U3(8), 6.0(2)U3(9), 6.0(2)U4(1), 6.0(2)U4(2), 6.0(2)U4(3), 6.0(2)U4(4), 6.0(2)U5(1), 6.0(2)U5(2), 6.0(2)U5(3), 6.0(2)U5(4), 6.0(2)U6(1), 6.0(2)U6(2), 6.0(2)U6(3), 6.0(2)U6(4), 6.0(2)U6(5), 6.0(2)U6(6), 6.0(2)U6(7), 6.0(2)U6(8), 6.0(2)U6(1a), 6.0(2)U6(2a), 6.0(2)U6(3a), 6.0(2)U6(4a), 6.0(2)U6(5a), 6.0(2)U6(5b), 6.0(2)U6(5c), 6.0(2)U6(9), 6.0(2)U6(10), 6.2(2), 6.2(2a), 6.2(6), 6.2(6b), 6.2(8), 6.2(8a), 6.2(8b), 6.2(10), 6.2(12), 6.2(18), 6.2(16), 6.2(14), 6.2(6a), 6.2(20), 6.2(1), 6.2(3), 6.2(5), 6.2(5a), 6.2(5b), 6.2(7), 6.2(9), 6.2(9a), 6.2(9b), 6.2(9c), 6.2(11), 6.2(11b), 6.2(11c), 6.2(11d), 6.2(11e), 6.2(13), 6.2(13a), 6.2(13b), 6.2(15), 6.2(17), 6.2(19), 6.2(21), 6.2(23), 6.2(20a), 6.2(25), 6.2(22), 6.2(27), 6.2(29), 6.2(24), 6.2(31), 6.2(24a), 6.2(33), 7.0(3)F1(1), 7.0(3)F2(1), 7.0(3)F2(2), 7.0(3)F3(1), 7.0(3)F3(2), 7.0(3)F3(3), 7.0(3)F3(3a), 7.0(3)F3(4), 7.0(3)F3(3c), 7.0(3)F3(5), 7.0(3)I2(2a), 7.0(3)I2(2b), 7.0(3)I2(2c), 7.0(3)I2(2d), 7.0(3)I2(2e), 7.0(3)I2(3), 7.0(3)I2(4), 7.0(3)I2(5), 7.0(3)I2(1), 7.0(3)I2(1a), 7.0(3)I2(2), 7.0(3)I3(1), 7.0(3)I4(1), 7.0(3)I4(2), 7.0(3)I4(3), 7.0(3)I4(4), 7.0(3)I4(5), 7.0(3)I4(6), 7.0(3)I4(7), 7.0(3)I4(8), 7.0(3)I4(8a), 7.0(3)I4(8b), 7.0(3)I4(8z), 7.0(3)I4(9), 7.0(3)I5(1), 7.0(3)I5(2), 7.0(3)I6(1), 7.0(3)I6(2), 7.0(3)I7(1), 7.0(3)I7(2), 7.0(3)I7(3), 7.0(3)I7(4), 7.0(3)I7(5), 7.0(3)I7(5a), 7.0(3)I7(6), 7.0(3)I7(7), 7.0(3)I7(8), 7.0(3)I7(9), 7.0(3)I7(10), 7.1(0)N1(1a), 7.1(0)N1(1b), 7.1(0)N1(1), 7.1(1)N1(1), 7.1(2)N1(1), 7.1(3)N1(1), 7.1(3)N1(2), 7.1(4)N1(1), 7.1(5)N1(1), 7.1(5)N1(1b), 7.2(0)D1(1), 7.2(1)D1(1), 7.2(2)D1(2), 7.2(2)D1(1), 7.3(0)D1(1), 7.3(0)DX(1), 7.3(0)DY(1), 7.3(0)N1(1), 7.3(1)D1(1), 7.3(1)DY(1), 7.3(1)N1(1), 7.3(2)D1(1), 7.3(2)D1(2), 7.3(2)D1(3), 7.3(2)D1(3a), 7.3(2)N1(1), 7.3(3)N1(1), 8.0(1), 8.1(1), 8.1(2), 8.1(2a), 8.1(1a), 8.1(1b), 8.2(1), 8.2(2), 8.2(3), 8.2(4), 8.2(5), 8.2(6), 8.2(7), 8.2(7a), 8.2(8), 8.2(9), 8.2(10), 8.3(1), 8.3(2), 9.2(1), 9.2(2), 9.2(2t), 9.2(3), 9.2(4), 9.2(2v), 9.2(1a), 7.3(4)N1(1), 7.3(3)D1(1), 7.3(4)D1(1), 7.3(5)N1(1), 8.4(1), 8.4(1a), 8.4(2), 8.4(2a), 8.4(3), 8.4(2b), 8.4(4), 8.4(2c), 8.4(4a), 8.4(5), 8.4(2d), 8.4(6), 8.4(2e), 8.4(6a), 8.4(7), 8.4(2f), 9.3(1), 9.3(2), 9.3(3), 9.3(4), 9.3(5), 9.3(6), 9.3(7), 9.3(7a), 9.3(8), 9.3(9), 9.3(10), 9.3(11), 9.3(2a), 7.3(6)N1(1), 7.3(5)D1(1), 7.3(7)N1(1), 7.3(7)N1(1a), 7.3(7)N1(1b), 7.3(6)D1(1), 7.3(8)N1(1), 7.3(7)D1(1), 7.3(9)N1(1), 10.1(1), 10.1(2), 10.1(2t), 8.5(1), 7.3(10)N1(1), 7.3(8)D1(1), 10.2(1), 10.2(1q), 10.2(2), 10.2(3), 10.2(3t), 10.2(4), 10.2(5), 10.2(3v), 7.3(9)D1(1), 7.3(11)N1(1), 7.3(12)N1(1), 10.3(1), 10.3(2), 7.3(13)N1(1), 3.1(1e), 3.1(1g), 3.1(1h), 3.1(1k), 3.1(1l), 3.1(2b), 3.1(2c), 3.1(2e), 3.1(2f), 3.1(2g), 3.1(2h), 3.1(3a), 3.1(3b), 3.1(3c), 3.1(3d), 3.1(3e), 3.1(3f), 3.1(3h), 3.1(3j), 3.1(3k), 3.1(2d), 3.1(3l), 3.2(1d), 3.2(2b), 3.2(2c), 3.2(2d), 3.2(2e), 3.2(2f), 3.2(3a), 3.2(3b), 3.2(3d), 3.2(3e), 3.2(3g), 3.2(3h), 3.2(3i), 3.2(3j), 3.2(3k), 3.2(3l), 3.2(3n), 3.2(3o), 3.2(3p), 4.0(1a), 4.0(1b), 4.0(1c), 4.0(1d), 4.0(2a), 4.0(2b), 4.0(2d), 4.0(2e), 4.0(4b), 4.0(4c), 4.0(4d), 4.0(4e), 4.0(4f), 4.0(4g), 4.0(4h), 4.0(4a), 4.0(4i), 4.0(4k), 4.0(4l), 4.0(4m), 4.0(4n), 4.0(4o), 4.1(1a), 4.1(1b), 4.1(1c), 4.1(2a), 4.1(1d), 4.1(1e), 4.1(2b), 4.1(3a), 4.1(3b), 4.1(2c), 4.1(3d), 4.1(3c), 4.1(3e), 4.1(3f), 4.1(3h), 4.1(3i), 4.1(3j), 4.1(3k), 4.1(3l), 4.2(1d), 4.2(1c), 4.2(1f), 4.2(1i), 4.2(1k), 4.2(1l), 4.2(1m), 4.2(2a), 4.2(2c), 4.2(1n), 4.2(2d), 4.2(3b), 4.2(2e), 4.2(3d), 4.2(3e), 4.2(3g), 4.2(3h), 4.2(3i), 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, 2.3.1.99, 2.3.1.93, 2.3.1.91, 2.3.1.88, 2.3.1.75, 2.3.1.73, 2.3.1.66, 2.3.1.58, 2.3.1.130, 2.3.1.111, 2.3.1.110, 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, 2.3.1.56, 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, 12.0(1m), 12.0(2g), 12.0(1n), 12.0(1o), 12.0(1p), 12.0(1q), 12.0(2h), 12.0(2l), 12.0(2m), 12.0(2n), 12.0(2o), 12.0(2f), 12.0(1r), 12.1(1h), 12.1(2e), 12.1(3g), 12.1(4a), 12.1(1i), 12.1(2g), 12.1(2k), 12.1(3h), 12.1(3j), 12.2(1n), 12.2(2e), 12.2(3j), 12.2(4f), 12.2(4p), 12.2(3p), 12.2(3r), 12.2(3s), 12.2(3t), 12.2(2f), 12.2(2i), 12.2(2j), 12.2(2k), 12.2(2q), 12.2(1o), 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(4d), 13.2(4e), 13.2(3s), 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(3d), 14.0(3c), 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), 14.2(2g), 14.2(3j), 14.2(3l), 14.2(3n), 14.2(3q), 14.2(4i), 14.2(4k), 14.2(4o), 14.2(4p), 14.2(5k), 14.2(5l), 14.2(5n), 14.2(6d), 14.2(6g), 14.2(6h), 14.2(6l), 14.2(7f), 14.2(7l), 14.2(6o), 14.2(7q), 14.2(7r), 14.2(7s), 14.2(7t), 14.2(7u), 14.2(7v), 14.2(7w), 15.0(1k), 15.0(1l), 15.0(2e), 15.0(2h), 15.1(1h), 15.1(2e), 15.1(3e), 15.1(4c), 15.2(1g), 15.2(2e), 15.2(2f), 15.2(2g), 15.2(2h), 15.2(3e), 15.2(3f), 15.2(3g), 15.2(4d), 15.2(4e), 15.2(5c), 15.2(5d), 15.2(5e), 15.2(4f), 15.2(6e), 15.2(6g), 15.2(7f), 15.2(7g), 15.2(8d), 15.2(8e), 15.2(8f), 15.2(8g), 16.0(1g), 16.0(1j), 16.0(2h), 16.0(2j), 16.0(3d), 16.0(3e), 15.3(1d)
Timeline
Official Publish:
February 28th, 2024
Last Modified:
August 1st, 2024
Added to House:
July 22nd, 2026
CVSS Vectors
V3:
CVSS:3.1/AV:A/AC:L/PR:N/UI:R/S:C/C:N/I:N/A:H
Weaknesses (CWE)
MITRE ATT&CK TTPs
No associated TTPs found for this vulnerability.