A Vulnerability in vBulletin Could Allow for Remote Code Execution

ITS Advisory Number: 
2016-134
Date(s) Issued: 
Thursday, August 11, 2016
Subject: 
A Vulnerability in vBulletin Could Allow for Remote Code Execution
Overview: 

A vulnerability has been discovered in vBulletin that could allow for remote code execution. vBulletin is a commercial forum and blog platform. Successful exploitation could result in sensitive information disclosure, sending spam, denial of service, data loss and remote code execution.

Systems Affected: 
  • Versions prior to 3.8.9, 4.2.3, and 5.2.3 are vulnerable. 
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: 
N/A
Description: 

A vulnerability has been discovered in vBulletin that could allow for remote code execution. If successful, the exploit can expose internal services on the network, and unauthenticated users or automated scanners would be able to send malicious data. This is the result of an issue in the vBulletin codebase that allows for HTTP redirects. As a result, vBulletin is susceptible to a server side request forgery attack. Successful exploitation could result in sensitive information disclosure, sending spam, denial of service, data loss and remote code execution.

 

Actions: 
  • After appropriate testing, apply the patches provided by vBulletin to vulnerable systems immediately.
  • 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 untrusted sources.