Advisory Details

October 13th, 2015

Adobe Acrobat Reader DC ANVerifyComments Javascript API Restrictions Bypass Vulnerability

ZDI-15-494
ZDI-CAN-3073

CVE ID CVE-2015-7616
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 20548. For further product information on the TippingPoint IPS: http://www.tippingpoint.com
VULNERABILITY DETAILS


This vulnerability allows remote attackers to bypass API restrictions on vulnerable installations of Adobe Acrobat 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 ANVerifyComments method. By creating a specially crafted PDF with specific Javascript instructions, it is possible to bypass the Javascript API restrictions. A remote attacker could exploit this vulnerability to execute arbitrary code.

ADDITIONAL DETAILS Adobe has issued an update to correct this vulnerability. More details can be found at:
https://helpx.adobe.com/security/products/acrobat/apsb15-24.html
DISCLOSURE TIMELINE
  • 2015-07-27 - Vulnerability reported to vendor
  • 2015-10-13 - Coordinated public release of advisory
CREDIT AbdulAziz Hariri - HP Zero Day Initiative
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