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

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Message-ID: <04F9AFDCA6560B42B91DB1A429B7D0DE055310EE@G1W3778.americas.hpqcorp.net>
Date: Fri, 3 Aug 2012 19:49:07 +0000
From: ZDI Disclosures <zdi-disclosures@...pingpoint.com>
To: "'full-disclosure@...ts.grok.org.uk'" <full-disclosure@...ts.grok.org.uk>, 
	"'bugtraq@...urityfocus.com'" <bugtraq@...urityfocus.com>
Cc: ZDI Disclosures <zdi-disclosures@...com>
Subject: ZDI-12-131 : Microsoft .NET Framework Undersized
 Glyph Buffer Remote Code Execution Vulnerability

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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

- -- About the Zero Day Initiative (ZDI):
Established by TippingPoint, The Zero Day Initiative (ZDI) represents 
a best-of-breed model for rewarding security researchers for responsibly
disclosing discovered vulnerabilities.

Researchers interested in getting paid for their security research
through the ZDI can find more information and sign-up at:

    http://www.zerodayinitiative.com

The ZDI is unique in how the acquired vulnerability information is
used. TippingPoint does not re-sell the vulnerability details or any
exploit code. Instead, upon notifying the affected product vendor,
TippingPoint provides its customers with zero day protection through
its intrusion prevention technology. Explicit details regarding the
specifics of the vulnerability are not exposed to any parties until
an official vendor patch is publicly available. Furthermore, with the
altruistic aim of helping to secure a broader user base, TippingPoint
provides this vulnerability information confidentially to security
vendors (including competitors) who have a vulnerability protection or
mitigation product.

Our vulnerability disclosure policy is available online at:

    http://www.zerodayinitiative.com/advisories/disclosure_policy/

Follow the ZDI on Twitter:

    http://twitter.com/thezdi

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