(Pwn2Own) Adobe Acrobat Reader DC AnnotsString Prototype Pollution API Restrictions Bypass Vulnerability

This vulnerability allows remote attackers to bypass API restrictions on affected 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 AnnotsString object. The issue results from the lack of control over modifications to attributes of object prototypes. An attacker can leverage this in conjunction with other vulnerabilities to execute arbitrary code in the context of the current process.