Advisory Details

January 25th, 2019

(Pwn2Own) Apple Safari Global RegExp JIT Type Confusion Remote Code Execution Vulnerability

ZDI-19-131
ZDI-CAN-7479

CVE ID CVE-2019-6216
CVSS SCORE 7.3, (AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:L)
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 global regular expressions. By performing actions in JavaScript, an attacker can trigger a type confusion condition. An attacker can leverage this vulnerability to execute code in 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/kb/HT201222
DISCLOSURE TIMELINE
  • 2018-11-15 - Vulnerability reported to vendor
  • 2019-01-25 - Coordinated public release of advisory
  • 2019-06-14 - Advisory Updated
CREDIT flouroacetate
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