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Microsoft GDI WMF Parsing Heap Overflow Vulnerability (MS08-021)
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SUMMARY
A 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.
DETAILS
Vulnerable Systems:
* Microsoft Windows XP SP2
* Microsoft Windows 2003 SP1
* Microsoft Windows Vista
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.
Vendor Response:
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>
http://www.microsoft.com/technet/security/bulletin/ms08-021.mspx
CVE Information:
<http://www.cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2008-1083>
CVE-2008-1083
ADDITIONAL INFORMATION
The information has been provided by <mailto:zdi-disclosures@3com.com>
The Zero Day Initiative.
The original article can be found at:
<http://www.zerodayinitiative.com/advisories/ZDI-08-020>
http://www.zerodayinitiative.com/advisories/ZDI-08-020
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