TippingPoint Zero Day Initiative
 

Microsoft .NET Framework Undersized Glyph Buffer Remote Code Execution Vulnerability

ZDI-12-131: August 3rd, 2012

CVE ID

CVSS Score

Affected Vendors

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.

Vendor Response

Microsoft has issued an update to correct this vulnerability. More details can be found at:

Disclosure Timeline

    2011-12-07 - Vulnerability reported to vendor
    2012-08-03 - Coordinated public release of advisory

Credit

This vulnerability was discovered by:
    Vitaliy Toropov