Out-of-bounds write in macOS - CVE-2021-30919

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Main Vulnerability Database Vulnerabilities #VU57713

Out-of-bounds write in macOS - CVE-2021-30919

Published: October 27, 2021 / Updated: February 16, 2022


Vulnerability identifier: #VU57713
CSH Severity: High
CVSS v4: 8.6 [CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:A/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N]
CVE-ID: CVE-2021-30919
CWE-ID: CWE-787
Exploitation vector: Remote access
Exploit availability: No public exploit available

Vulnerability details

The vulnerability allows a remote attacker to compromise vulnerable system.

The vulnerability exists due to a boundary error within the CoreGraphics subsystem when processing PDF files. A remote attacker can create a specially crafted PDF file, trick the victim into opening it using the affected software, trigger out-of-bounds write and execute arbitrary code on the target system.


Affected software

macOS
watchOS
tvOS
iPadOS
Apple iOS

How to mitigate CVE-2021-30919

Install updates from vendor's website.

macOS - addressed in versions 11.6.1 20G224, 10.15.7 19H1519, 12.0.1 21A559
watchOS - update to 8.1 19R570
tvOS - update to 15.1 19J572
iPadOS - addressed in versions 14.8.1 18H107, 15.1 19B74, 15.1 19B75
Apple iOS - addressed in versions 14.8.1 18H107, 15.1 19B74

External References

Related Security Bulletins