Vulnerabilities > CVE-2022-20907 - Improper Privilege Management vulnerability in Cisco Nexus Dashboard

047910
CVSS 6.7 - MEDIUM
Attack vector
LOCAL
Attack complexity
LOW
Privileges required
HIGH
Confidentiality impact
HIGH
Integrity impact
HIGH
Availability impact
HIGH
local
low complexity
cisco
CWE-269

Summary

Multiple vulnerabilities in Cisco Nexus Dashboard could allow an authenticated, local attacker to elevate privileges on an affected device. These vulnerabilities are due to insufficient input validation during CLI command execution on an affected device. An attacker could exploit these vulnerabilities by authenticating as the rescue-user and executing vulnerable CLI commands using a malicious payload. A successful exploit could allow the attacker to elevate privileges to root on an affected device.

Common Weakness Enumeration (CWE)

Common Attack Pattern Enumeration and Classification (CAPEC)

  • Restful Privilege Elevation
    Rest uses standard HTTP (Get, Put, Delete) style permissions methods, but these are not necessarily correlated generally with back end programs. Strict interpretation of HTTP get methods means that these HTTP Get services should not be used to delete information on the server, but there is no access control mechanism to back up this logic. This means that unless the services are properly ACL'd and the application's service implementation are following these guidelines then an HTTP request can easily execute a delete or update on the server side. The attacker identifies a HTTP Get URL such as http://victimsite/updateOrder, which calls out to a program to update orders on a database or other resource. The URL is not idempotent so the request can be submitted multiple times by the attacker, additionally, the attacker may be able to exploit the URL published as a Get method that actually performs updates (instead of merely retrieving data). This may result in malicious or inadvertent altering of data on the server.