Integer overflow in Apple iOS and iPadOS - CVE-2021-30860
Published: August 25, 2021 / Updated: December 30, 2021
Vulnerability identifier: #VU56067
CSH Severity: Critical
CVSS v4.0: 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/E:A/U:Red
CVE-ID: CVE-2021-30860
CWE-ID: CWE-190
Exploitation vector: Remote access
Exploit availability:
The vulnerability is being exploited in the wild
Vendor: Apple Inc.
Affected software:
Apple iOS
iPadOS
Apple iOS
iPadOS
Detailed vulnerability description
The vulnerability allows a remote attacker to execute arbitrary code on the target system.
The vulnerability exists due to integer overflow when processing PDF files within the CoreGraphics component. A remote attacker can trick the victim to open a specially crafted PDF file, trigger integer overflow and execute arbitrary code on the target system.
Note, the vulnerability is being active exploited in-the-wild via the FORCEDENTRY tool against Bahraini activists.
How to mitigate CVE-2021-30860
Install update from vendor's website.