Advisory Details

June 11th, 2014

(Pwn2Own) Microsoft Internet Explorer CDispNodeBase Use-After-Free Remote Code Execution Vulnerability

ZDI-14-192
ZDI-CAN-2227

CVE ID CVE-2014-1766
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 13745. 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 handling of CDispNodeBase 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:
https://technet.microsoft.com/library/security/ms14-035
DISCLOSURE TIMELINE
  • 2014-03-14 - Vulnerability reported to vendor
  • 2014-06-11 - Coordinated public release of advisory
CREDIT Andreas Schmidt (andreas.schmidt@siberas.de)
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