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Zero Day Initiative Advisory 12-190

Zero Day Initiative Advisory 12-190
Posted Dec 21, 2012
Authored by Tipping Point | Site zerodayinitiative.com

Zero Day Initiative Advisory 12-190 - 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 in the 'onpropertychange' user callback function for the document.title. If the function changes the document in the callback function by using, for example, a document.write call, this can result in a use-after-free vulnerability. This can lead to remote code execution under the context of the program.

tags | advisory, remote, arbitrary, code execution
advisories | CVE-2012-1877
SHA-256 | 4c3c7f5e3250c7b1484ca7357cdefae51d7f8acc72681ad5fc5ebe3a648e80a8

Zero Day Initiative Advisory 12-190

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ZDI-12-190 : Microsoft Internet Explorer Title Element Change Remote Code
Execution Vulnerability
http://www.zerodayinitiative.com/advisories/ZDI-12-190
December 21, 2012

- -- CVE ID:
CVE-2012-1877

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

- -- 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 12385.
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 in the 'onpropertychange' user callback function
for the document.title. If the function changes the document in the
callback function by using, for example, a document.write call, this can
result in a use-after-free vulnerability. This can lead to remote code
execution under the context of the program.

- -- Vendor Response:
Microsoft has issued an update to correct this vulnerability. More details
can be found at:
https://technet.microsoft.com/en-us/security/bulletin/ms12-037


- -- Disclosure Timeline:
2012-03-14 - 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/

Follow the ZDI on Twitter:

http://twitter.com/thezdi

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