CVE-2024-20294

State: Published
Severity: 6.6 Medium
Published: Feb 28, 2024
Updated: Aug 1, 2024
Reserved: Nov 8, 2023

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).

Scores

CVSS	Score	Vector	Source
3.1	6.6 Medium	CVSS:3.1/AV:A/AC:L/PR:N/UI:R/S:C/C:N/I:N/A:H	cisco

Weaknesses

CWE-805 Buffer Access with Incorrect Length Value

Affected Products

Product	Versions
Cisco NX-OS SoftwareCisco	6.0(2)A3(1)Affected 6.0(2)A3(2)Affected 6.0(2)A3(4)Affected 6.0(2)A4(1)Affected 6.0(2)A4(2)Affected 6.0(2)A4(3)Affected 6.0(2)A4(4)Affected 6.0(2)A4(5)Affected 6.0(2)A4(6)Affected 6.0(2)A6(1)Affected 6.0(2)A6(1a)Affected 6.0(2)A6(2)Affected 6.0(2)A6(2a)Affected 6.0(2)A6(3)Affected 6.0(2)A6(3a)Affected 6.0(2)A6(4)Affected 6.0(2)A6(4a)Affected 6.0(2)A6(5)Affected 6.0(2)A6(5a)Affected 6.0(2)A6(5b)Affected 6.0(2)A6(6)Affected 6.0(2)A6(7)Affected 6.0(2)A6(8)Affected 6.0(2)A7(1)Affected 6.0(2)A7(1a)Affected and 269 more versions
Cisco Unified Computing System (Managed)Cisco	3.1(1e)Affected 3.1(1g)Affected 3.1(1h)Affected 3.1(1k)Affected 3.1(1l)Affected 3.1(2b)Affected 3.1(2c)Affected 3.1(2e)Affected 3.1(2f)Affected 3.1(2g)Affected 3.1(2h)Affected 3.1(3a)Affected 3.1(3b)Affected 3.1(3c)Affected 3.1(3d)Affected 3.1(3e)Affected 3.1(3f)Affected 3.1(3h)Affected 3.1(3j)Affected 3.1(3k)Affected 3.1(2d)Affected 3.1(3l)Affected 3.2(1d)Affected 3.2(2b)Affected 3.2(2c)Affected and 75 more versions
Cisco Firepower Extensible Operating System (FXOS)Cisco	2.2.1.63Affected 2.2.1.66Affected 2.2.1.70Affected 2.2.2.17Affected 2.2.2.19Affected 2.2.2.24Affected 2.2.2.26Affected 2.2.2.28Affected 2.2.2.54Affected 2.2.2.60Affected 2.2.2.71Affected 2.2.2.83Affected 2.2.2.86Affected 2.2.2.91Affected 2.2.2.97Affected 2.2.2.101Affected 2.2.2.137Affected 2.2.2.148Affected 2.2.2.149Affected 2.3.1.99Affected 2.3.1.93Affected 2.3.1.91Affected 2.3.1.88Affected 2.3.1.75Affected 2.3.1.73Affected and 74 more versions
Cisco NX-OS System Software in ACI ModeCisco	12.0(1m)Affected 12.0(2g)Affected 12.0(1n)Affected 12.0(1o)Affected 12.0(1p)Affected 12.0(1q)Affected 12.0(2h)Affected 12.0(2l)Affected 12.0(2m)Affected 12.0(2n)Affected 12.0(2o)Affected 12.0(2f)Affected 12.0(1r)Affected 12.1(1h)Affected 12.1(2e)Affected 12.1(3g)Affected 12.1(4a)Affected 12.1(1i)Affected 12.1(2g)Affected 12.1(2k)Affected 12.1(3h)Affected 12.1(3j)Affected 12.2(1n)Affected 12.2(2e)Affected 12.2(3j)Affected and 139 more versions

References

cisco-sa-nxos-lldp-dos-z7PncTgt

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