Advisory Details

March 30th, 2017

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

ZDI-17-241
ZDI-CAN-4452

CVE ID CVE-2017-2463
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 RenderBox objects. The issue results from the lack of validating the existence of an object prior to performing operations on the object. An attacker can leverage this vulnerability to achieve remote code execution 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/kb/HT201222
DISCLOSURE TIMELINE
  • 2017-01-20 - Vulnerability reported to vendor
  • 2017-03-30 - Coordinated public release of advisory
CREDIT Kai Kang(a.k.a 4B5F5F4B) of Tencent's Xuanwu LAB(http://www.tencent.com)
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