A Vulnerability in IBM WebSphere Application Server Could Allow for Remote Code Execution

ITS Advisory Number: 
2020-081
Date(s) Issued: 
Thursday, June 11, 2020
Subject: 
A Vulnerability in IBM WebSphere Application Server Could Allow for Remote Code Execution
Overview: 

A vulnerability has been discovered in IBM WebSphere Application Server that could allow for remote code execution. IBM WebSphere Application Server is a software framework and middleware that hosts Java-based web applications. Successful exploitation of this vulnerability could allow an attacker to execute remote code in the context of the affected application. Depending on the privileges associated with the application, an attacker could install programs; view, change, or delete data; or create new accounts with full user rights. Failed exploitation could result in a denial-of-service condition.

THREAT INTELLIGENCE:

There is no report of this vulnerability being exploited in the wild.

Systems Affected: 
  • IBM WebSphere Application Server version 8.5.0.0 through 8.5.5.17
  • IBM WebSphere Application Server version 9.0.0.0 through 9.0.5.3
  • IBM WebSphere Virtual Enterprise Edition version 7.0
  • IBM WebSphere Virtual Enterprise Edition version 8.0
RISK
GOVERNMENT
Large and medium government entities: 
High
Small government entities: 
Medium
BUSINESS
Large and medium business entities: 
High
Small business entities: 
Medium
Home Users: 
Low
Description: 

A vulnerability has been discovered in IBM WebSphere Application Server that could allow for remote code execution. The specific flaw exists within the BroadcastMessageManager class. The issue results from the lack of proper validation of user-supplied data, which can result in deserialization of untrusted data. An attacker can leverage this vulnerability to execute code in the context of SYSTEM.

Successful exploitation of this vulnerability could allow an attacker to execute remote code in the context of the affected application. Depending on the privileges associated with the application, an attacker could install programs; view, change, or delete data; or create new accounts with full user rights. Failed exploitation could result in a denial-of-service condition.

Actions: 
  • After appropriate testing, immediately upgrade to the latest version of IBM WebSphere Application Server.
  • Verify no unauthorized system modifications have occurred on system before applying patch.
  • Apply the principle of Least Privilege to all systems and services.
  • Remind users not to visit websites or follow links provided by unknown or untrusted sources.