Advisory Details

October 10th, 2006

Microsoft PowerPoint Malformed Slide Notes Rebuilding Vulnerability

ZDI-06-032
ZDI-CAN-065

CVE ID CVE-2006-3435
CVSS SCORE
AFFECTED VENDORS Microsoft
AFFECTED PRODUCTS File Format Vulnerability
TREND MICRO CUSTOMER PROTECTION Trend Micro TippingPoint IPS customers are protected against this vulnerability by Digital Vaccine protection filter ID 4770. For further product information on the TippingPoint IPS: http://www.tippingpoint.com
VULNERABILITY DETAILS

This vulnerability allows attackers to execute arbitrary code on vulnerable installations of Microsoft Office. Exploitation requires that the attacker coerce the target user into opening a malicious .PPT file.

The specific flaw exists during the parsing of a malformed slide notes field within the PowerPoint presentation. When PowerPoint attempts to rebuild the malformed section, a pointer calculation is made based on attacker controlled data from within the file. This pointer is later dereferenced and can lead to arbitrary code execution with the privileges of the user who opened the malicious file.

ADDITIONAL DETAILS Microsoft has issued an update to correct this vulnerability. More details can be found at:
http://www.microsoft.com/technet/security/Bulletin/MS06-058.mspx
DISCLOSURE TIMELINE
  • 2006-06-14 - Vulnerability reported to vendor
  • 2006-10-10 - Coordinated public release of advisory
CREDIT Arnaud Dovi aka 'class101', http://heapoverflow.com
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