ZDI-12-131 : Microsoft .NET Framework Undersized Glyph Buffer- Remote Code Execution Vulnerability

From: ZDI Disclosures <zdi-disclosures@tippingpoint.com>
To: 'full-disclosure@lists.grok.org.uk' <full-disclosure@lists.grok.org.uk>,'bugtraq@securityfocus.com' <bugtraq@securityfocus.com>
Cc: ZDI Disclosures <zdi-disclosures@hp.com>
Subject: ZDI-12-131 : Microsoft .NET Framework Undersized Glyph Buffer- Remote Code Execution Vulnerability
Date:


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ZDI-12-131 : Microsoft .NET Framework Undersized Glyph Buffer Remote Code
Execution Vulnerability
http://www.zerodayinitiative.com/advisories/ZDI-12-131
August  3, 2012

- -- CVE ID:
CVE-2012-0162

- -- CVSS:
7.5, AV:N/AC:L/Au:N/C:P/I:P/A:P

- -- Affected Vendors:
Microsoft

- -- Affected Products:
Microsoft .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:

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:
This vulnerability was discovered by:
* Vitaliy Toropov


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