Advisory Details

December 21st, 2012

Microsoft Internet Explorer CMarkup outerText Remote Code Execution Vulnerability

ZDI-12-198
ZDI-CAN-1574

CVE ID CVE-2012-2557
CVSS SCORE 7.5, (AV:N/AC:L/Au:N/C:P/I:P/A:P)
AFFECTED VENDORS Microsoft
AFFECTED PRODUCTS Internet Explorer 8
TREND MICRO CUSTOMER PROTECTION Trend Micro TippingPoint IPS customers are protected against this vulnerability by Digital Vaccine protection filter ID 12583. 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 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.

ADDITIONAL DETAILS 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 Anonymous
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