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Cisco NX-OS Software DHCP Options Command Injection Vulnerability
Information
Severity
Severity
Family
Family
CVSSv2 Base
CVSSv2 Base
CVSSv2 Vector
CVSSv2 Vector
Solution Type
Solution Type
Created
Created
Modified
Modified
Summary
A vulnerability in DHCP code used with PowerOn Auto Provisioning (POAP) of Cisco NX-OS could allow an unauthenticated, adjacent attacker to inject arbitrary commands into the Cisco NX-OS device. The vulnerability is due to insufficient input validation of the DHCP options returned as a result of POAP. An attacker could exploit this vulnerability by responding to the initial DHCP request initiated as part of POAP with crafted DHCP packets. An exploit could allow the attacker to execute arbitrary commands in the security context of the root user. The attack can occur during the POAP initialization process. Cisco has confirmed the vulnerability and released software updates. To exploit this vulnerability, an attacker must be on the same broadcast or collision domain as the affected device. This access requirement could decrease the likelihood of a successful exploit.
Detection Method
Detection Method
Checks if a vulnerable version is present on the target host.
Solution
Solution
See the referenced vendor advisory for a solution.