Advisory Details

December 13th, 2016

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

ZDI-16-632
ZDI-CAN-3953

CVE ID CVE-2016-7611
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 HTMLLabelElement objects. By performing actions in JavaScript an attacker can cause a 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.
ADDITIONAL DETAILS Apple has issued an update to correct this vulnerability. More details can be found at:
https://support.apple.com/en-us/HT207421
DISCLOSURE TIMELINE
  • 2016-09-06 - Vulnerability reported to vendor
  • 2016-12-13 - Coordinated public release of advisory
CREDIT Anonymous
BACK TO ADVISORIES