Advisory Details

August 18th, 2022

(Pwn2Own) Apple Safari Out-Of-Bounds Write Remote Code Execution Vulnerability

ZDI-22-1123
ZDI-CAN-17417

CVE ID CVE-2024-27834
CVSS SCORE 8.8, AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
AFFECTED VENDORS Apple
AFFECTED PRODUCTS Safari
VULNERABILITY DETAILS

This vulnerability allows remote attackers to execute arbitrary code on affected 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 B3 JIT compiler. By performing actions in JavaScript, an attacker can trigger a write past the end of an allocated data structure. 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/en-us/HT213345
DISCLOSURE TIMELINE
  • 2022-05-26 - Vulnerability reported to vendor
  • 2022-08-18 - Coordinated public release of advisory
  • 2024-06-12 - Advisory Updated
CREDIT Manfred Paul (@_manfp)
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