CVE-2021-30860 Information

Description

An integer overflow was addressed with improved input validation. This issue is fixed in Security Update 2021-005 Catalina iOS 14.8 and iPadOS 14.8 macOS Big Sur 11.6 watchOS 7.6.2. Processing a maliciously crafted PDF may lead to arbitrary code execution. Apple is aware of a report that this issue may have been actively exploited.

CVSS Vector

CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H

Reference

https://support.apple.com/en-us/HT212806 https://support.apple.com/en-us/HT212807 https://support.apple.com/en-us/HT212804 https://support.apple.com/en-us/HT212805 http://seclists.org/fulldisclosure/2021/Sep/26 http://seclists.org/fulldisclosure/2021/Sep/25 http://seclists.org/fulldisclosure/2021/Sep/28 http://seclists.org/fulldisclosure/2021/Sep/27 http://seclists.org/fulldisclosure/2021/Sep/39 http://seclists.org/fulldisclosure/2021/Sep/38 http://seclists.org/fulldisclosure/2021/Sep/40 https://support.apple.com/kb/HT212824 http://seclists.org/fulldisclosure/2021/Sep/50

Attack Complexity

LOW

Privileges Required

NONE

User Interaction Required

NONE

Scope

REQUIRED

Confidentiality Impact

UNCHANGED

Integrity Impact

HIGH

Availability Impact

HIGH

Base Score

HIGH

Base Severity

7.8