Advisory Details

June 11th, 2015

(Pwn2Own) Microsoft Internet Explorer mergeAttributes Uninitialized Data Remote Code Execution Vulnerability

ZDI-15-252
ZDI-CAN-2828

CVE ID CVE-2015-1745
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 19603. 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 merges attributes of HTML elements. By manipulating a document's elements an attacker can cause a CAttrValue object to be created with uninitialized data. 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/MS15-056
DISCLOSURE TIMELINE
  • 2015-03-18 - Vulnerability reported to vendor
  • 2015-06-11 - Coordinated public release of advisory
CREDIT Yuki Chen of Qihoo 360
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