Apple Mac OS X DFont Memory Corruption Remote Code Execution Vulnerability

2015-01-27T00:00:00
ID ZDI-15-011
Type zdi
Reporter Gaurav Baruah
Modified 2015-11-09T00:00:00

Description

This vulnerability allows remote attackers to execute arbitrary code on vulnerable installations of Apple Mac OSX. 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 parsing of a dfont file. When processing a malformed dfont file, a specified value is parsed from the file and passed to the memmove API call which can cause memory corruption. A remote attacker can use this to execute remote code under the context of the user.