Advisory Details

April 12th, 2011

Microsoft PowerPoint TimeCommandBehaviorContainer Remote Code Execution Vulnerability

ZDI-11-123
ZDI-CAN-949

CVE ID CVE-2011-0655
CVSS SCORE 9, (AV:N/AC:L/Au:N/C:P/I:P/A:C)
AFFECTED VENDORS Microsoft
AFFECTED PRODUCTS Office PowerPoint
TREND MICRO CUSTOMER PROTECTION Trend Micro TippingPoint IPS customers are protected against this vulnerability by Digital Vaccine protection filter ID 10822. For further product information on the TippingPoint IPS: http://www.tippingpoint.com
VULNERABILITY DETAILS

This vulnerability allows remote attackers to execute arbitrary code on vulnerable installations of Microsoft Office PowerPoint. User interaction is required to exploit this vulnerability in that the target must visit a malicious page or open a malicious file.

The specific flaw exists within the ppcore.dll module responsible for parsing PowerPoint (ppt) files. When parsing a malformed TimeCommandBehaviorContainer structure the process raises an exception that causes an object in memory to be freed prior to being fully parsed. Due to the lack of a check that this object has been freed, a later function references an invalid pointer element. This can be leveraged by a remote attacker to execute arbitrary code under the context of the user running PowerPoint.

ADDITIONAL DETAILS Microsoft has issued an update to correct this vulnerability. More details can be found at:
http://www.microsoft.com/technet/security/Bulletin/MS11-022.mspx
DISCLOSURE TIMELINE
  • 2010-09-24 - Vulnerability reported to vendor
  • 2011-04-12 - Coordinated public release of advisory
CREDIT Anonymous
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