Apple macOS AudioToolboxCore RF64 File Parsing Heap-based Buffer Overflow Remote Code Execution Vulnerability

June 25th, 2021
ZDI-21-765 ZDI-CAN-12838

CVE ID

CVE-2021-30707

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 AudioToolboxCore library is required to exploit this vulnerability but attack vectors may vary depending on the implementation.

The specific flaw exists within the parsing of RF64 audio files. A crafted RF64 file can trigger an overflow of a fixed-length heap-based buffer. 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/HT212529

Disclosure Timeline

  • 2021-02-25 - Vulnerability reported to vendor
  • 2021-06-25 - Coordinated public release of advisory

Credit

hjy79425575

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