Advisory Details

September 27th, 2016

Apple Safari HTMLVideoElement Use-After-Free Remote Code Execution Vulnerability

ZDI-16-527
ZDI-CAN-3852

CVE ID CVE-2016-4768
CVSS SCORE 6.8, AV:N/AC:M/Au:N/C:P/I:P/A:P
AFFECTED VENDORS Apple
AFFECTED PRODUCTS Safari
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 handling of HTMLVideoElement objects. By manipulating a document's elements an attacker can cause a pointer to be reused after it has been freed. An attacker can leverage this vulnerability to execute arbitrary code under the context of the process.
ADDITIONAL DETAILS Apple has issued an update to correct this vulnerability. More details can be found at:
https://support.apple.com/en-us/HT207157
DISCLOSURE TIMELINE
  • 2016-07-12 - Vulnerability reported to vendor
  • 2016-09-27 - Coordinated public release of advisory
CREDIT Anonymous
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