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Zero Day Initiative Advisory 12-035

Zero Day Initiative Advisory 12-035
Posted Feb 23, 2012
Authored by Tipping Point | Site zerodayinitiative.com

Zero Day Initiative Advisory 12-035 - This vulnerability allows remote attackers to execute arbitrary code on vulnerable installations of Microsoft Internet Explorer. User interaction is required in that a target must visit a malicious page or open a malicious file. The flaw exists within MSHTML, specifically the handling of an HTML time t:MEDIA element. A t:MEDIA element can be manipulated such that when the page is refreshed a reference to a freed CDispNode object remains allowing the repurpose of this region. A remote attacker can exploit this vulnerability to execute arbitrary code under the context of the process.

tags | advisory, remote, arbitrary
advisories | CVE-2012-0011
SHA-256 | df4f311fcd1579648e5945d76912d846d27da68fbe2df2c21540d95d6a0122e9

Zero Day Initiative Advisory 12-035

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Hash: SHA1

ZDI-12-035 : Microsoft Internet Explorer CDispNode t:MEDIA Remote Code
Execution Vulnerability
http://www.zerodayinitiative.com/advisories/ZDI-12-035
February 22, 2012

- -- CVE ID:
CVE-2012-0011

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

- -- Affected Vendors:

Microsoft



- -- Affected Products:

Microsoft Internet Explorer 9



- -- TippingPoint(TM) IPS Customer Protection:
TippingPoint IPS customers have been protected against this
vulnerability by Digital Vaccine protection filter ID 12065.
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 in that a target must visit a malicious page or
open a malicious file.

The flaw exists within MSHTML, specifically the handling of an HTML time
t:MEDIA element. A t:MEDIA element can be manipulated such that when the
page is refreshed a reference to a freed CDispNode object remains
allowing the repurpose of this region. A remote attacker can exploit
this vulnerability to execute arbitrary code under the context of the
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/bulletin/MS12-010




- -- Disclosure Timeline:
2011-10-21 - Vulnerability reported to vendor

2012-02-22 - Coordinated public release of advisory



- -- Credit:
This vulnerability was discovered by:

* Stephen Fewer of Harmony Security (www.harmonysecurity.com)



- -- 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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