Microsoft PowerPoint OEPlaceholderAtom Use-After-Free Vulnerability
Microsoft PowerPoint is an application used for constructing presentations, and comes with the Microsoft Office suite. For more information, see the vendor's site found at the following link.
Remote exploitation of a use-after-free vulnerability in Microsoft Corp.'s PowerPoint could allow an attacker to execute arbitrary code with the privileges of the current user.
This vulnerability occurs when parsing multiple "OEPlaceholderAtom" records present in a "msofbtClientData" container. This record type is used to create a placeholder for an object (picture, text, etc.) on a slide. When a certain series of these records are present, it is possible to trigger a use-after-free vulnerability, which can lead to the execution of arbitrary code.
Exploitation of this vulnerability results in the execution of arbitrary code with the privileges of the user opening the file. To exploit this vulnerability, an attacker would need to convince a user to open a malicious file. If the targeted user is running PowerPoint 2000 and the "Office Document Open Confirmation Tool" is not installed, then it is possible to exploit this vulnerability directly through the browser.
iDefense has confirmed the existence of this vulnerability in the following versions of PowerPoint:
PowerPoint 2002 (XP) SP3
PowerPoint 2003 SP3
PowerPoint 2007 and PowerPoint 2007 SP1 are not affected.
iDefense is currently unaware of any workarounds for this issue.
Microsoft Corp. has released a patch which addresses this issue. Information about downloadable vendor updates can be found by clicking on the URLs shown. http://www.microsoft.com/technet/security/Bulletin/MS10-004.mspx
The Common Vulnerabilities and Exposures (CVE) project has assigned the name CVE-2010-0032 to this issue. This is a candidate for inclusion in the CVE list (http://cve.mitre.org/), which standardizes names for security problems.
07/08/2009 Initial Vendor Notification
07/08/2009 Initial Vendor Reply
02/09/2010 Coordinated Public Disclosure
This vulnerability was discovered by Sean Larsson, iDefense Labs.
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