Advisory Details

April 8th, 2008

Microsoft GDI WMF Parsing Heap Overflow Vulnerability

ZDI-08-020
ZDI-CAN-295

CVE ID CVE-2008-1083
CVSS SCORE
AFFECTED VENDORS Microsoft
AFFECTED PRODUCTS Windows XP SP2
Windows 2003 SP1
Windows Vista
Windows 2000 SP4
VULNERABILITY DETAILS

This vulnerability allows remote attackers to execute arbitrary code on vulnerable installations of Microsoft Windows. User interaction is required in that a user must open a malicious file or visit a malicious web page.

The specific flaw exists within the parsing of malformed WMF files. A vulnerability exists in the GDI funcion CreateDIBPatternBrushPt used when processing WMF files. Due to a mis-calculation of user data a heap chunk can be under-allocated and later used resulting in a heap overflow. Successful exploitation can result in system compromise under the credentials of the currently logged in user.

ADDITIONAL DETAILS Microsoft has issued an update to correct this vulnerability. More details can be found at:
http://www.microsoft.com/technet/security/bulletin/ms08-021.mspx
DISCLOSURE TIMELINE
  • 2008-02-07 - Vulnerability reported to vendor
  • 2008-04-08 - Coordinated public release of advisory
CREDIT Sebastian Apelt (webmaster@buzzworld.org)
BACK TO ADVISORIES