Mozilla Firefox DirectionalityUtils Use-After-Free Remote Code Execution Vulnerability

ID ZDI-14-427
Type zdi
Reporter regenrecht
Modified 2015-06-22T00:00:00


This vulnerability allows remote attackers to execute arbitrary code on vulnerable installations of Mozilla Firefox. 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 bi-directional unicode text. The issue lies in the failure to properly handle text that has its bi-directional character type changed. An attacker can leverage this vulnerability to execute code under the context of the current process.