Advisory Details

December 8th, 2015

Microsoft Internet Explorer CStylesheet Rules Out-Of-Bounds Access Remote Code Execution Vulnerability

ZDI-15-585
ZDI-CAN-3296

CVE ID CVE-2015-6141
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 20997. 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 specific flaw exists within the usage of CStylesheet objects. By manipulating a document's elements, an attacker can force an out-of-bounds memory access to occur. 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/ms15-124.aspx
DISCLOSURE TIMELINE
  • 2015-09-17 - Vulnerability reported to vendor
  • 2015-12-08 - Coordinated public release of advisory
CREDIT B6BEB4D5E828CF0CCB47BB24AAC22515
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