Advisory Details

October 8th, 2013

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

ZDI-13-232
ZDI-CAN-1927

CVE ID CVE-2013-3871
CVSS SCORE 6.8, (AV:N/AC:M/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 13211. 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 CAnchorElement 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/en-us/security/bulletin/ms13-080
DISCLOSURE TIMELINE
  • 2013-07-05 - Vulnerability reported to vendor
  • 2013-10-08 - Coordinated public release of advisory
CREDIT Simon Zuckerbraun
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