Advisory Details

August 9th, 2016

Microsoft Office Word RTF JPEG Parsing Out-Of-Bounds Write Remote Code Execution Vulnerability

ZDI-16-451
ZDI-CAN-3743

CVE ID CVE-2016-3318
CVSS SCORE 6.8, (AV:N/AC:M/Au:N/C:P/I:P/A:P)
AFFECTED VENDORS Microsoft
AFFECTED PRODUCTS Office Word
TREND MICRO CUSTOMER PROTECTION Trend Micro TippingPoint IPS customers are protected against this vulnerability by Digital Vaccine protection filter ID 24885. 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 Office Word. 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 processing of a JPEG embedded within an RTF file. The issue lies in the failure to properly validate user-supplied data which can result in a write past the end of an allocated buffer. An attacker can leverage this vulnerability to execute arbitrary 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/MS16-099
DISCLOSURE TIMELINE
  • 2016-06-06 - Vulnerability reported to vendor
  • 2016-08-09 - Coordinated public release of advisory
CREDIT Arun Kumar Sharma
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