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AUSCERT External Security Bulletin Redistribution
ESB-2015.3069
Microsoft Security Bulletin MS15-134: Security Update for Windows Media
Center to Address Remote Code Execution (3108669)
9 December 2015
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AusCERT Security Bulletin Summary
---------------------------------
Product: Microsoft Windows
Publisher: Microsoft
Operating System: Windows
Impact/Access: Access Confidential Data -- Remote with User Interaction
Execute Arbitrary Code/Commands -- Remote with User Interaction
Resolution: Patch/Upgrade
CVE Names: CVE-2015-6131 CVE-2015-6127
Original Bulletin:
https://technet.microsoft.com/en-us/library/security/MS15-134
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Microsoft Security Bulletin MS15-134: Security Update for Windows Media Center
to Address Remote Code Execution (3108669)
Document Metadata
Bulletin Number: MS15-134
Bulletin Title: Security Update for Windows Media Center to Address Remote
Code Execution
Severity: Important
KB Article: 3108669
Version: 1.0
Published Date: December 8, 2015
Executive Summary
This security update resolves vulnerabilities in Microsoft Windows. The more
severe of the vulnerabilities could allow remote code execution if Windows
Media Center opens a specially crafted Media Center link (.mcl) file that
references malicious code. An attacker who successfully exploited this
vulnerability could gain the same user rights as the current user. Customers
whose accounts are configured to have fewer user rights on the system could be
less impacted than those who operate with administrative user rights.
This security update is rated Important for all supported editions of Windows
Media Center when installed on Windows Vista, Windows 7, Windows 8, or Windows
8.1. For more information, see the Affected Software section.
Affected Software
Windows Media Center
Windows Vista Service Pack 2
Windows Vista x64 Edition Service Pack 2
Windows 7 for 32-bit Systems Service Pack 1
Windows 7 for x64-based Systems Service Pack 1
Windows 8 for 32-bit Systems
Windows 8 for x64-based Systems
Windows 8.1 for 32-bit Systems
Windows 8.1 for x64-based Systems
Media Center Library Parsing RCE Vulnerability - CVE-2015-6131
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. An attacker who successfully
exploited this vulnerability could take control of an affected system.
Customers whose accounts are configured to have fewer user rights on the
system could be less impacted than users who operate with administrative user
rights. Workstations are primarily at risk of this vulnerability.
To exploit the vulnerability, user interaction is required. In a web-browsing
scenario, a user would have to navigate to a compromised website that an
attacker is using to host a malicious .mcl file. In an email attack scenario,
an attacker would have to convince a user who is logged on to a vulnerable
workstation to click a specially crafted link in an email. The security update
addresses the vulnerability by correcting how Windows Media Center handles
certain resources in the .mcl file.
Microsoft received information about this vulnerability through coordinated
vulnerability disclosure. At the time this security bulletin was originally
issued, Microsoft was unaware of any attack attempting to exploit this
vulnerability.
Windows Media Center Information Disclosure Vulnerability - CVE-2015-6127
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. An attacker who
successfully exploited the vulnerability could disclose local file system
information. Workstations are primarily at risk of this vulnerability.
To exploit the vulnerability, user interaction is required. In a web-browsing
scenario, a user would have to navigate to a compromised website that an
attacker is using to host a malicious .mcl file. In an email attack scenario,
an attacker would have to convince a user who is logged on to a vulnerable
workstation to click a specially crafted link in an email. The security update
addresses the vulnerability by correcting how Windows Media Center handles
certain resources in the .mcl file.
Microsoft received information about this vulnerability through coordinated
vulnerability disclosure. At the time this security bulletin was originally
issued, Microsoft was unaware of any attack attempting to exploit this
vulnerability.
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