(Pwn2Own) Adobe Flash AS2 LoadVars decode Use-After-Free Remote Code Execution Vulnerability

ID ZDI-16-225
Type zdi
Reporter Yuki Chen of Qihoo 360 Vulcan Team
Modified 2016-11-09T00:00:00


This vulnerability allows remote attackers to execute arbitrary code on vulnerable installations of Adobe Flash. 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 LoadVars.decode. The issue lies in the failure to safely hold a reference to arguments during execution of the function. An attacker can leverage this vulnerability to execute arbitrary code under the context of the current process.