Advisory Details

August 5th, 2021

Apple macOS ModelIO ABC File Parsing Out-Of-Bounds Write Remote Code Execution Vulnerability

ZDI-21-947
ZDI-CAN-13761

CVE ID CVE-2021-30792
CVSS SCORE 7.8, AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
AFFECTED VENDORS Apple
AFFECTED PRODUCTS macOS
VULNERABILITY DETAILS

This vulnerability allows remote attackers to execute arbitrary code on affected installations of Apple macOS. Interaction with the ModelIO library is required to exploit this vulnerability but attack vectors may vary depending on the implementation.

The specific flaw exists within the ModelIO framework. Crafted data in an ABC file 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/HT212602
DISCLOSURE TIMELINE
  • 2021-05-13 - Vulnerability reported to vendor
  • 2021-08-05 - Coordinated public release of advisory
CREDIT Anonymous
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