Advisory Details

July 12th, 2016

Adobe Reader DC XSLT value-of Out-Of-Bounds Write Remote Code Execution Vulnerability

ZDI-16-422
ZDI-CAN-3731

CVE ID CVE-2016-4198
CVSS SCORE 6.8, (AV:N/AC:M/Au:N/C:P/I:P/A:P)
AFFECTED VENDORS Adobe
AFFECTED PRODUCTS Acrobat Reader DC
TREND MICRO CUSTOMER PROTECTION Trend Micro TippingPoint IPS customers are protected against this vulnerability by Digital Vaccine protection filter ID 24597. 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 Adobe Reader DC. 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 handling of XPath expressions. A PDF document with a specific value-of element and an XPath expression can force Adobe Reader DC to write values past the end of an allocated object. An attacker can leverage this vulnerability to execute arbitrary code under the context of the current process.

ADDITIONAL DETAILS Adobe has issued an update to correct this vulnerability. More details can be found at:
https://helpx.adobe.com/security/products/acrobat/apsb16-26.html
DISCLOSURE TIMELINE
  • 2016-04-28 - Vulnerability reported to vendor
  • 2016-07-12 - Coordinated public release of advisory
CREDIT Wei Lei
Sun Zhihao and Liu Yang of Nanyang Technological University
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