Advisory Details

November 10th, 2015

Microsoft Internet Explorer COptionElement::InvalidateDataListAncestorCollections Use-After-Free Remote Code Execution Vulnerability

ZDI-15-538
ZDI-CAN-2915

CVE ID CVE-2015-6064
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 19854. 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 vulnerability relates to how Internet Explorer caches the options collection of datalist elements. By manipulating a document's elements an attacker can force a COptionElement object in memory to be reused after it has been freed. An attacker can leverage this vulnerability to execute code under the context of the current process.

VENDOR RESPONSE Microsoft has issued an update to correct this vulnerability. More details can be found at:
https://technet.microsoft.com/library/security/MS15-112
DISCLOSURE TIMELINE
  • 2015-05-06 - Vulnerability reported to vendor
  • 2015-11-10 - Coordinated public release of advisory
CREDIT Simon Zuckerbraun - HPE Security Zero Day Initiative
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