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 breakdown
CVSS 3.1
Attack Vector
Local
Attack Complexity
Low
Privileges Required
None
User Interaction
Required
Scope
Unchanged
Confidentiality
High
Integrity
High
Availability
High
Affected products
- Apple / iOSunspecified – 14.8
- Apple / macOSunspecified – 11.6
- Apple / macOSunspecified – 2021-005
- Apple / watchOSunspecified – 7.6
References
- VENDOR_ADVISORYhttps://support.apple.com/en-us/HT212804
- VENDOR_ADVISORYhttps://support.apple.com/en-us/HT212805
- VENDOR_ADVISORYhttps://support.apple.com/en-us/HT212807
- VENDOR_ADVISORYhttps://support.apple.com/en-us/HT212806
- MAILING_LISThttp://seclists.org/fulldisclosure/2021/Sep/28
- MAILING_LISThttp://seclists.org/fulldisclosure/2021/Sep/27
- MAILING_LISThttp://seclists.org/fulldisclosure/2021/Sep/25
- MAILING_LISThttp://seclists.org/fulldisclosure/2021/Sep/26
- MAILING_LISThttp://seclists.org/fulldisclosure/2021/Sep/40
- MAILING_LISThttp://seclists.org/fulldisclosure/2021/Sep/38
- MAILING_LISThttp://seclists.org/fulldisclosure/2021/Sep/39
- VENDOR_ADVISORYhttps://support.apple.com/kb/HT212824
- MAILING_LISThttp://seclists.org/fulldisclosure/2021/Sep/50
- MAILING_LISThttp://www.openwall.com/lists/oss-security/2022/09/02/11
- MISChttps://security.gentoo.org/glsa/202209-21