Microsoft Office vulnerability could allow remote code execution

Notification Type: IBM Internet Security Systems Protection Alert
Notification Date: June 11, 2013
Notification Version: 1.0
Name: Microsoft Office vulnerability could allow remote code execution
Public disclosure/
In the wild date:
June 11, 2013
Aliases: MS13-051
CVE: CVE-2013-1331

A remote code execution vulnerability exists in the way that Microsoft Office parses PNG files in specially crafted Office files.


ISS Coverage

Product Content Version
Proventia Network IDS
Proventia Network IPS
Proventia MFS
Proventia Server (Linux)
RealSecure Network
RealSecure Server Sensor
Virtual Server Protection for VMware
Proventia Desktop
Proventia Server IPS (Windows)
Propagation Techniques ISS Protection Available
Remote Exploit Image_PNG_GDI_Heap_Overflow*
13 Oct 2009

* This signature is blocking by default.

Detailed Description

Business Impact:

A remote code execution vulnerability exists in the way that Microsoft Office parses PNG files in specially crafted Office files.  Successful exploitation of this vulnerability could take complete control of an affected system in the context of the current user. It has been used in limited targeted attacks in the wild.

*CVSS: Base Score: 9.3
  Access Vector: Network
Access Complexity: Medium
Authentication: None
Confidentiality Impact: Complete
Integrity Impact: Complete
Availability Impact: Complete
Adjusted Temporal Score: 6.9
  Exploitability: Unproven
Remediation Level: Official-Fix
Report Confidence: Confirmed
Affected Products: For a full list of affected versions, see references below.
Technical Description

There is a vulnerability in Microsoft Office PNG parsing code, that leads to a classical buffer overflow and remote code execution. Affected versions are MS Office 2003 and Office for Mac 2011.


A patch is available, see references below for details.



Revision History

1.0 Initial publication.

* According to the Forum of Incident Response and Security Teams (FIRST), the Common Vulnerability Scoring System (CVSS) is an "industry open standard designed to convey vulnerability severity and help to determine urgency and priority of response." IBM PROVIDES THE CVSS SCORES "AS IS" WITHOUT WARRANTY OF ANY KIND, INCLUDING THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE. CUSTOMERS ARE RESPONSIBLE FOR ASSESSING THE IMPACT OF ANY ACTUAL OR POTENTIAL SECURITY VULNERABILITY.
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