Advisory Details

July 12th, 2016

Microsoft Edge CGeolocationManager Use-After-Free Remote Code Execution Vulnerability

ZDI-16-412
ZDI-CAN-3747

CVE ID CVE-2016-3264
CVSS SCORE 6.8, (AV:N/AC:M/Au:N/C:P/I:P/A:P)
AFFECTED VENDORS Microsoft
AFFECTED PRODUCTS Edge
TREND MICRO CUSTOMER PROTECTION Trend Micro TippingPoint IPS customers are protected against this vulnerability by Digital Vaccine protection filter ID 24739. 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 Edge. 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 Microsoft Edge requests permission from the user to allow a website to access device location information (for example, GPS). By performing certain actions in script, an attacker can force a CGeolocationManager 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.

ADDITIONAL DETAILS Microsoft has issued an update to correct this vulnerability. More details can be found at:
https://technet.microsoft.com/library/security/MS16-085
DISCLOSURE TIMELINE
  • 2016-05-05 - Vulnerability reported to vendor
  • 2016-07-12 - Coordinated public release of advisory
CREDIT exp-sky (http://exp-sky.org) of Tencent's Xuanwu LAB (http://www.tencent.com)
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