Message-ID: <50D459CC.5020309@hp.com>
Date: Fri, 21 Dec 2012 06:45:00 -0600
From: ZDI Disclosures <zdi-disclosures@...pingpoint.com>
To: Full Disclosure <full-disclosure@...ts.grok.org.uk>, 
	BugTraq <bugtraq@...urityfocus.com>, zdi-disclosures@...com
Subject: ZDI-12-198 : Microsoft Internet Explorer CMarkup
 outerText Remote Code Execution Vulnerability

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ZDI-12-198 : Microsoft Internet Explorer CMarkup outerText Remote Code
Execution Vulnerability
http://www.zerodayinitiative.com/advisories/ZDI-12-198
December 21, 2012

- -- CVE ID:
CVE-2012-2557

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

- -- Affected Vendors:
Microsoft

- -- Affected Products:
Microsoft Internet Explorer 8


- -- TippingPoint(TM) IPS Customer Protection:
TippingPoint IPS customers have been protected against this
vulnerability by Digital Vaccine protection filter ID 12583.
For further product information on the TippingPoint IPS, visit:

     http://www.tippingpoint.com

- -- Vulnerability Details:
This vulnerability allows remote attackers to execute arbitrary code on
vulnerable installations of Microsoft Internet Explorer. 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 the way Internet Explorer handles CMarkup
objects. By manipulating a document's elements an attacker can force a
dangling pointer to be reused after it has been freed. An attacker can
leverage this vulnerability to execute code under the context of the
current process.

- -- Vendor Response:
Microsoft has issued an update to correct this vulnerability. More details
can be found at:
http://technet.microsoft.com/en-us/security/advisory/2757760


- -- Disclosure Timeline:
2012-07-24 - Vulnerability reported to vendor
2012-12-21 - Coordinated public release of advisory


- -- Credit:
This vulnerability was discovered by:
* Anonymous


- -- 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/

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     http://twitter.com/thezdi

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