Apple Mobile Safari isindex Use-After-Free Remote Code Execution Vulnerability

ID ZDI-14-057
Type zdi
Reporter ant4g0nist (SegFault)
Modified 2014-11-09T00:00:00


This vulnerability allows remote attackers to execute arbitrary code on vulnerable installations of Apple Safari. 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 isindex elements. The issue lies in setting attributes to invalid values. By manipulating a document's elements an attacker can force a dangling pointer to be reused after it has been freed. An attacker can leverage this vulnerability to execute code under the context of the current process.