Adobe Acrobat Reader indexOfNextEssential Javascript API Restrictions Bypass Vulnerability

ID ZDI-15-208
Type zdi
Reporter Simon Zuckerbraun - HP Zero Day Initiative
Modified 2015-11-09T00:00:00


This vulnerability allows remote attackers to bypass API restrictions on vulnerable installations of Adobe Reader. 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 indexOfNextEssential 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.