Advisory Details

May 18th, 2016

Microsoft Edge JavaScript shift Method Uninitialized Memory Remote Code Execution Vulnerability

ZDI-16-338
ZDI-CAN-3658

CVE ID CVE-2016-0186
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 24475. 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 specific flaw exists within the implementation of the JavaScript Array.shift method. By performing certain operations in script, an attacker can cause JavaScript to read uninitialized data from a memory location on the stack. An attacker can leverage this 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/library/security/ms16-052.aspx
DISCLOSURE TIMELINE
  • 2016-04-01 - Vulnerability reported to vendor
  • 2016-05-18 - Coordinated public release of advisory
CREDIT Brian Pak (cai) from Theori
BACK TO ADVISORIES