CVE-2020-3172

published 2020-02-26

CVE-2020-3172: A vulnerability in the Cisco Discovery Protocol feature of Cisco FXOS Software and Cisco NX-OS Software could allow an unauthenticated, adjacent attacker to…

high 8.8 CVSS 3.1

AV A AC L PR N UI N S U C H I H A H

A vulnerability in the Cisco Discovery Protocol feature of Cisco FXOS Software and Cisco NX-OS Software could allow an unauthenticated, adjacent attacker to execute arbitrary code as root or cause a denial of service (DoS) condition on an affected device. The vulnerability exists because of insufficiently validated Cisco Discovery Protocol packet headers. An attacker could exploit this vulnerability by sending a crafted Cisco Discovery Protocol packet to a Layer 2-adjacent affected device. A successful exploit could allow the attacker to cause a buffer overflow that could allow the attacker to execute arbitrary code as root or cause a DoS condition on the affected device. Note: Cisco Discovery Protocol is a Layer 2 protocol. To exploit this vulnerability, an attacker must be in the same broadcast domain as the affected device (Layer 2 adjacent). Note: This vulnerability is different from the following Cisco FXOS and NX-OS Software Cisco Discovery Protocol vulnerabilities that Cisco announced on Feb. 5, 2020: Cisco FXOS, IOS XR, and NX-OS Software Cisco Discovery Protocol Denial of Service Vulnerability and Cisco NX-OS Software Cisco Discovery Protocol Remote Code Execution Vulnerability.

Affected

13 ranges

Vendor	Product	Version range	Fixed in
cisco	cisco_unified_computing_system	>= unspecified < n/a	n/a
cisco	firepower_extensible_operating_system	< 2.6.1.187	2.6.1.187
cisco	firepower_extensible_operating_system	>= 2.7 < 2.7.1.106	2.7.1.106
cisco	fxos_and_nx-os	—	—
cisco	nx-os	—	—
cisco	nx-os	—	—
cisco	nx-os	—	—
cisco	nx-os	—	—
cisco	nx-os	—	—
cisco	nx-os	—	—
cisco	nx-os	—	—
cisco	ucs_manager	< 3.2\(3n\)	3.2\(3n\)
cisco	ucs_manager	>= 4.0 < 4.0\(4g\)	4.0\(4g\)

CWE-20