Cisco Security Advisory - Cisco ACI Multi-Site Orchestrator Application Services Engine Deployment Authentication Bypass Vulnerability

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Cisco ACI Multi-Site Orchestrator Application Services Engine Deployment Authentication Bypass Vulnerability

A vulnerability in an API endpoint of Cisco ACI Multi-Site Orchestrator (MSO) installed on the Application Services Engine could allow an unauthenticated, remote attacker to bypass authentication on an affected device.

The vulnerability is due to improper token validation on a specific API endpoint. An attacker could exploit this vulnerability by sending a crafted request to the affected API. A successful exploit could allow the attacker to receive a token with administrator-level privileges that could be used to authenticate to the API on affected MSO and managed Cisco Application Policy Infrastructure Controller (APIC) devices.

Cisco has released software updates that address this vulnerability. There are no workarounds that address this vulnerability.

This advisory is available at the following link:
https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-mso-authbyp-bb5GmBQv

     
         
Security Impact Rating:  Critical
   
   
       
CVE: CVE-2021-1388
Source: Cisco ACI Multi-Site Orchestrator Application Services Engine Deployment Authentication Bypass Vulnerability