Out-of-bounds read in macOS - CVE-2021-30790
Published: July 21, 2021 / Updated: August 9, 2021
Vulnerability identifier: #VU55187
CSH Severity: Medium
CVSS v4: 7.5 [CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:A/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N]
CVE-ID: CVE-2021-30790
CWE-ID: CWE-125
Exploitation vector: Remote access
Exploit availability:
No public exploit available
Vulnerability details
The vulnerability allows a remote attacker to gain access to potentially sensitive information.
The vulnerability exists due to a boundary condition within AppKit component. A remote attacker can create a specially crafted JPG or PDF file, trick the victim into opening it, trigger out-of-bounds read error and read contents of memory on the system.
Successful vulnerability exploitation may lead to remote code execution.
Affected software
macOS
How to mitigate CVE-2021-30790
Install updates from vendor's website.
macOS - addressed in versions 11.5 20G71, 10.14.6 18G9323, 10.15.7 19H1323