Advisory Details

February 12th, 2021

Apple macOS ImageIO PIC File Parsing Out-Of-Bounds Write Remote Code Execution Vulnerability

ZDI-21-193
ZDI-CAN-12628

CVE ID CVE-2021-1737
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 ImageIO library is required to exploit this vulnerability but attack vectors may vary depending on the implementation.

The specific flaw exists within the ImageIO framework. Crafted data in a PIC 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/HT212147
DISCLOSURE TIMELINE
  • 2020-12-16 - Vulnerability reported to vendor
  • 2021-02-12 - Coordinated public release of advisory
CREDIT Mickey Jin of Trend Micro Mobile Security Research Team
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