Advisory Details

June 16th, 2016

Microsoft Internet Explorer PerformDoDragDrop Protected Mode Sandbox Escape Vulnerability

ZDI-16-366
ZDI-CAN-3539

CVE ID CVE-2016-3211
CVSS SCORE 6.9, (AV:L/AC:M/Au:N/C:C/I:C/A:C)
AFFECTED VENDORS Microsoft
AFFECTED PRODUCTS Internet Explorer
VULNERABILITY DETAILS


This vulnerability allows 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 usage of the method IShdocvwBroker::PerformDoDragDrop. An attacker who has gained code execution within the Internet Explorer Protected Mode sandbox can leverage this method to place a malicious executable file in any location to which the user has write access. An attacker can leverage this vulnerability to execute code under the context of the user at medium integrity.

VENDOR RESPONSE Microsoft has issued an update to correct this vulnerability. More details can be found at:
https://technet.microsoft.com/library/security/MS16-063
DISCLOSURE TIMELINE
  • 2016-02-01 - Vulnerability reported to vendor
  • 2016-06-16 - Coordinated public release of advisory
CREDIT Ashutosh Mehra (https://twitter.com/ashutoshmehra)
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