Advisory Details

January 10th, 2017

Acrobat Reader DC XFA Field Font Size Use-After-Free Remote Code Execution Vulnerability

ZDI-17-025
ZDI-CAN-4209

CVE ID CVE-2017-2961
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 26518. 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 XFA field font size. The process does not properly validate the existence of an object prior to performing operations on the object. An attacker can leverage this vulnerability to execute 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/apsb17-01.html
DISCLOSURE TIMELINE
  • 2016-11-30 - Vulnerability reported to vendor
  • 2017-01-10 - Coordinated public release of advisory
CREDIT Sebastian Apelt (siberas)
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