Vulnerability in Windows Media Center Could Allow Remote Code Execution (MS15-134)

ITS Advisory Number: 
2015-152
Date(s) Issued: 
Tuesday, December 8, 2015
Subject: 
Vulnerability in Windows Media Center Could Allow Remote Code Execution (MS15-134)
Overview: 

Multiple vulnerabilities have been discovered in Microsoft WindowsMedia Center, which could allow an attacker to take complete control of an affected system. Successful exploitation of this vulnerability could result in an attacker gaining the same privileges as the logged on user. Depending on the privileges associated with the user, an attacker could then install programs; view, change, or delete data; or create new accounts with full user rights.

 

Systems Affected: 
  • Microsoft Windows Vista
  • Microsoft Windows 7
  • Microsoft Windows 8 and 8.1
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: 
High
Description: 

Multiple vulnerabilities have been discovered in Windows Media Center. The details are as follows:

  • A vulnerability exists in Windows Media Center that could allow remote code execution if Windows Media Center opens a specially crafted Media Center link (.mcl) file that references malicious code. [CVE-2015-6131]
  • A vulnerability exists in Windows Media Center that could allow information disclosure if Windows Media Center improperly handles a specially crafted Media Center link (.mcl) file that references malicious code. Workstations are primarily at risk of this vulnerability. [CVE-2015-6127]

An attacker who successfully exploits these vulnerabilities at worst, could take control of an affected system. Depending on the privileges associated with the user, an attacker could then install programs; view, change, or delete data; or create new accounts with full user rights.

Actions: 
  • Apply appropriate patches provided by Microsoft to vulnerable systems immediately after appropriate testing.
  • Run all software as a non-privileged user (one without administrative privileges) to diminish the effects of a successful attack.
  • Remind users not to visit un-trusted websites or follow links provided by unknown or un-trusted sources.
  • Inform and educate users regarding the threats posed by hypertext links contained in emails or attachments especially from un-trusted sources.