A Vulnerability in Cisco Unified Contact Center Express Could Allow for Remote Code Execution

ITS Advisory Number: 
2020-070
Date(s) Issued: 
Friday, May 22, 2020
Subject: 
A Vulnerability in Cisco Unified Contact Center Express Could Allow for Remote Code Execution
Overview: 

A vulnerability has been discovered in Cisco Unified Contact Center Express which could allow for remote code execution. Cisco Unified Contact Center Express is an IP-based automated call distribution system that handles call routing, management, and administration features. Successful exploitation of this vulnerability could allow an attacker to execute arbitrary code as the root user on an affected device. An attacker could then install programs; view, change, or delete data; or create new accounts with full user rights.

 

THREAT INTELLIGENCE:

There are currently no reports of this vulnerability being exploited in the wild.

Systems Affected: 
  • Cisco Unified Contact Center Express prior to 12.0(1)ES03.
RISK
GOVERNMENT
Large and medium government entities: 
High
Small government entities: 
High
BUSINESS
Large and medium business entities: 
High
Small business entities: 
High
Home Users: 
N/A
Description: 

A vulnerability (CVE-2020-3280) has been discovered in Cisco Unified Contact Center Express that could allow for remote code execution. The vulnerability occurs due to insecure deserialization of user-supplied content by the affected software. An attacker could exploit this vulnerability by sending a malicious serialized Java object to a specific listener on an affected system. Successful exploitation of this vulnerability could allow an attacker to execute arbitrary code as the root user on an affected device. An attacker could then install programs; view, change, or delete data; or create new accounts with full user rights.

Actions: 
  • After appropriate testing, immediately apply the update provided by Cisco to vulnerable systems.
  • Remind users not to visit websites or follow links provided by unknown or untrusted sources.
  • Inform and educate users regarding the threats posed by hypertext links contained in emails or attachments especially from un-trusted sources.
  • Apply the Principle of Least Privilege to all systems and services.