Advisory Details

August 3rd, 2012

Microsoft .NET Framework Undersized Glyph Buffer Remote Code Execution Vulnerability

ZDI-12-131
ZDI-CAN-1432

CVE ID CVE-2012-0162
CVSS SCORE 7.5, (AV:N/AC:L/Au:N/C:P/I:P/A:P)
AFFECTED VENDORS Microsoft
AFFECTED PRODUCTS .NET
VULNERABILITY DETAILS


This vulnerability allows remote attackers to execute arbitrary code on vulnerable installations of the .NET Framework. 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 Microsoft .NET handling of XAML Browser Applications (XBAP) graphics components. It is possible to cause an undersized allocation for a buffer which is populated with user-supplied glyph data, resulting in memory corruption which can be leveraged to remotely execute code.

ADDITIONAL DETAILS Microsoft has issued an update to correct this vulnerability. More details can be found at:
http://technet.microsoft.com/en-us/security/bulletin/ms12-034
DISCLOSURE TIMELINE
  • 2011-12-07 - Vulnerability reported to vendor
  • 2012-08-03 - Coordinated public release of advisory
CREDIT Vitaliy Toropov
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