CVE-2020-3119

A vulnerability in the Cisco Discovery Protocol implementation for Cisco NX-OS Software could allow an unauthenticated, adjacent attacker to execute arbitrary code or cause a reload on an affected device. The vulnerability exists because the Cisco Discovery Protocol parser does not properly validate input for certain fields in a Cisco Discovery Protocol message. An attacker could exploit this vulnerability by sending a malicious Cisco Discovery Protocol packet to an affected device. An successful exploit could allow the attacker to cause a stack overflow, which could allow the attacker to execute arbitrary code with administrative privileges on an affected device. 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).

• cisco nx-os (>= 7.0\(3\)f2 < 9.3\(2\)) • cisco nx-os (>= 7.0\(3\)i < 7.0\(3\)i7\(8\)) • cisco nx-os (>= 7.1 < 7.3\(6\)n1\(1\)) • cisco nx-os (< 9.3\(2\)) • cisco nx-os (>= 14.0 < 14.2\(1j\)) • cisco ucs manager (< 3.2\(3m\)) • cisco ucs manager (>= 4.0 < 4.0\(4f\))