Advisory Details

May 10th, 2016

(Pwn2Own) Microsoft Edge JavaScript concat Method Uninitialized Memory Remote Code Execution Vulnerability

ZDI-16-282
ZDI-CAN-3621

CVE ID CVE-2016-0191
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 24031. 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.concat 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 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/en-us/library/security/ms16-052.aspx
DISCLOSURE TIMELINE
  • 2016-03-12 - Vulnerability reported to vendor
  • 2016-05-10 - Coordinated public release of advisory
CREDIT lokihardt
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