A Vulnerability in VMware vCenter Server Could Allow for Remote Code Execution

ITS Advisory Number: 
2017-038
Date(s) Issued: 
Monday, April 17, 2017
Subject: 
A Vulnerability in VMware vCenter Server Could Allow for Remote Code Execution
Overview: 

A vulnerability has been discovered in VMware vCenter Server. VMware vCenter Server, formerly known as VirtualCenter, is the centralized management tool for the vSphere suite. Successful exploitation of this vulnerability could allow for remote code execution in the context of the affected application. Depending on the privileges associated with the application, an attacker could then install programs; view, change, or delete data; or create new accounts with full user rights.

Systems Affected: 
  • vCenter Server versions prior to 6.5c

  • vCenter Server versions prior to 6.0U3b

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: 
Low
Description: 

A vulnerability has been discovered in VMware vCenter Server, which when exploited could allow for remote code execution. This vulnerability occurs due to the use of BlazeDS, a server-based Java remoting and web messaging technology, in order to process AMF3 messages. The issue is present in the Customer Experience Improvement Program (CEIP) plugin and can be exploited during the deserialization of an untrusted Java object. If a customer has opted out of CEIP, the vulnerability is still present and can be exploited. CVE-2017-5641 has been assigned to this vulnerability.

 

Successful exploitation of this vulnerability could allow for remote code execution in the context of the affected application. Depending on the privileges associated with the application, 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 patches provided by VMware to the vulnerable systems.

  • If patching is not possible, implement the published workaround for the affected version.

  • Run all software as a non-privileged user (one without administrative privileges) to diminish the effects of a successful attack.

  • Apply the Principle of Least Privilege to all systems and services.