(Pwn2Own) Apple Safari TextTrack Object Use-After-Free Remote Code Execution Vulnerability
Vulnerability Details
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 way Safari manages the lifetime of TextTrack objects. 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 arbitrary code under the context of the current process.
Additional Details
Apple has issued an update to correct this vulnerability. More details can be found at:
https://support.apple.com/en-us/HT201222
Disclosure Timeline
- 2016-03-16 - Vulnerability reported to vendor
- 2016-05-19 - Coordinated public release of advisory
Credit
lokihardt
