Advisory Details

May 15th, 2017

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

ZDI-17-346
ZDI-CAN-4536

CVE ID CVE-2017-2506
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 RenderElement 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 execute code under the context of the current process.

ADDITIONAL DETAILS
DISCLOSURE TIMELINE
  • 2017-03-09 - Vulnerability reported to vendor
  • 2017-05-15 - Coordinated public release of advisory
CREDIT Zheng Huang of the Baidu Security Lab
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