Description
A use after free issue was addressed with improved memory management. This issue is fixed in Safari 14.1, iOS 12.5.3, iOS 14.5 and iPadOS 14.5, watchOS 7.4, tvOS 14.5, macOS Big Sur 11.3. Processing maliciously crafted web content 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
Network
Attack Complexity
Low
Privileges Required
None
User Interaction
Required
Scope
Unchanged
Confidentiality
High
Integrity
High
Availability
High
Affected products
- Apple / iOS and iPadOSunspecified – 14.5
- Apple / macOSunspecified – 11.3
- Apple / macOSunspecified – 12.5
- Apple / Safariunspecified – 14.1
- Apple / tvOSunspecified – 14.5
- Apple / watchOSunspecified – 7.4
References
- VENDOR_ADVISORYhttps://support.apple.com/en-us/HT212317
- VENDOR_ADVISORYhttps://support.apple.com/en-us/HT212323
- VENDOR_ADVISORYhttps://support.apple.com/en-us/HT212324
- VENDOR_ADVISORYhttps://support.apple.com/en-us/HT212325
- VENDOR_ADVISORYhttps://support.apple.com/en-us/HT212341
- VENDOR_ADVISORYhttps://support.apple.com/en-us/HT212318