Description
An out-of-bounds write issue was addressed with improved checks to prevent unauthorized actions. This issue is fixed in Safari 18.3.1, iOS 15.8.4 and iPadOS 15.8.4, iOS 16.7.11 and iPadOS 16.7.11, iOS 18.3.2 and iPadOS 18.3.2, iPadOS 17.7.6, macOS Sequoia 15.3.2, visionOS 2.3.2, watchOS 11.4. Maliciously crafted web content may be able to break out of Web Content sandbox. This is a supplementary fix for an attack that was blocked in iOS 17.2. (Apple is aware of a report that this issue may have been exploited in an extremely sophisticated attack against specific targeted individuals on versions of iOS before iOS 17.2.).
CVSS breakdown
CVSS 3.1
Attack Vector
Network
Attack Complexity
Low
Privileges Required
None
User Interaction
None
Scope
Changed
Confidentiality
High
Integrity
High
Availability
High
Affected products
- Apple / iOS and iPadOS0 – 15.8.4
- Apple / iOS and iPadOS0 – 16.7.11
- Apple / iOS and iPadOS0 – 18.3.2
- Apple / iPadOS0 – 17.7.6
- Apple / macOS0 – 15.3.2
- Apple / Safari0 – 18.3.1
- Apple / visionOS0 – 2.3.2
- Apple / watchOS0 – 11.4
References
- VENDOR_ADVISORYhttps://support.apple.com/en-us/122281
- VENDOR_ADVISORYhttps://support.apple.com/en-us/122283
- VENDOR_ADVISORYhttps://support.apple.com/en-us/122284
- VENDOR_ADVISORYhttps://support.apple.com/en-us/122285
- VENDOR_ADVISORYhttps://support.apple.com/en-us/122345
- VENDOR_ADVISORYhttps://support.apple.com/en-us/122346
- VENDOR_ADVISORYhttps://support.apple.com/en-us/122372
- VENDOR_ADVISORYhttps://support.apple.com/en-us/122376