Advisory Details

September 16th, 2014

Microsoft Internet Explorer CBackgroundCollection Use-After-Free Remote Code Execution Vulnerability

ZDI-14-319
ZDI-CAN-2486

CVE ID CVE-2014-4096
CVSS SCORE 6.8, AV:N/AC:M/Au:N/C:P/I:P/A:P
AFFECTED VENDORS Microsoft
AFFECTED PRODUCTS Internet Explorer
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 CBackgroundCollection 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://go.microsoft.com/fwlink/?LinkId=509961
DISCLOSURE TIMELINE
  • 2014-08-04 - Vulnerability reported to vendor
  • 2014-09-16 - Coordinated public release of advisory
CREDIT AbdulAziz Hariri
HP Zero Day Initiative
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