Advisory Details

November 30th, 2021

Apple macOS AudioCodecs LOAS File Parsing Out-Of-Bounds Read Information Disclosure Vulnerability

ZDI-21-1368
ZDI-CAN-14605

CVE ID CVE-2021-30905
CVSS SCORE 3.3, (AV:L/AC:L/PR:N/UI:R/S:U/C:L/I:N/A:N)
AFFECTED VENDORS Apple
AFFECTED PRODUCTS macOS
VULNERABILITY DETAILS

This vulnerability allows remote attackers to disclose sensitive information on affected installations of Apple macOS. 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 Deserialize function in AudioCodecs. Crafted data in a LOAS file can trigger a read past the end of an allocated data structure. An attacker can leverage this in conjunction with other vulnerabilities to execute arbitrary 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/HT212869
DISCLOSURE TIMELINE
  • 2021-07-13 - Vulnerability reported to vendor
  • 2021-11-30 - Coordinated public release of advisory
CREDIT Mickey Jin (@patch1t) of Trend Micro
BACK TO ADVISORIES