Advisory Details

December 21st, 2012

Microsoft Internet Explorer OnBeforeDeactivate Event Remote Code Execution Vulnerability

ZDI-12-194
ZDI-CAN-1523

CVE ID CVE-2012-1878
CVSS SCORE 7.5, (AV:N/AC:L/Au:N/C:P/I:P/A:P)
AFFECTED VENDORS Microsoft
AFFECTED PRODUCTS Internet Explorer
TREND MICRO CUSTOMER PROTECTION Trend Micro TippingPoint IPS customers are protected against this vulnerability by Digital Vaccine protection filter ID 12388. For further product information on the TippingPoint IPS: 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 the onbeforedeactivate callback function for certain elements. During the execution of the onbeforedeactivate callback function it is possible to alter the DOM tree of the page which can lead to a use-after-free vulnerability when the function returns. This can result in remote code execution under the context of the current process.

ADDITIONAL DETAILS 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 Anonymous
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